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Cronartium Stock Photos and Images
RMW5TY5N–Photograph of Pine Gall Rust on the Trunk of a Dead Jack Pine; Scope and content: Original caption: Pine gall rust (Cronartium ocrobrum) on the trunk of a dead jack pine.
RM2AN30W7–Fungi, Ascomycetes, Ustilaginales, Uredinales . lf ruptured and exposes the ripe spores. It becomes torn andrecurved so that the characteristic cluster-cup is produced (fig. 176). Thepseudoperidium is sometimes much elongated and cylindrical or inflated,producing the forms known as roestelia (Gymnosporangium), and peri-dermium (Coleosporium, Cronartium and allied genera), so-called from theirold generic names, or it may be represented only by a few paraphyses oraltogether absent (Phragmidium, Melampsord). The latter forms, to whichthe term caeoma is applied, are probably primitive. In the majo
RMPFX4W8–. The cultivated evergreens; a handbook of the coniferous and most important broad-leaved evergreens planted for ornament in the United States and Canada. Evergreens; Conifers. INSECTS, DISEASES, AND INJURIES 155 Cronartium rihicola, Fischer, which is a most formidable enemy of the white pines (i. e., those in which the needles are in fascicles of five). Without doubt all five-needled pines are liable to be at- tacked if exposed to the pathogen. The fungus was first found in North Amer- ica at Geneva, New York, in 1906, but it is probable that it was present for some years prior to that date.
RMT1HWP9–Diseases of economic plants (1921) Diseases of economic plants diseasesofeconom01stev Year: 1921 400 Diseases of Economic Plants Rust (Cronartium cerebrum (Pk.) H. & L., Peridermium). — Swollen areas occur upon the branches and young stems which are gradually killed. The gall-like growth sheds a Fig. 212. Gall produced by Cronartium (Perider- mium) cerebrum on pine. After Hedgcock. profusion of orange-colored spores each spring. Chiefly by its interference with the sap current the swellings bring about the death of many trees. The galls are perennial and may
RMTYCX1C–Photograph of Pine Gall Rust on the Trunk of a Dead Jack Pine; Scope and content: Original caption: Pine gall rust (Cronartium ocrobrum) on the trunk of a dead jack pine.
RM2AJ50NT–Fungous diseases of plants . Fig. 211. Cronartium Ribicola a, sori on currant leaf; b, sorus and teleutosporic column; c and d,uredospores and teleutospores 1 During June, 1909, the aecidial stage of this fungus was found in a nurseryof three-year-old white pine seedlings imported from Germany. Many seedlingsof this importation have been distributed to several northeastern states and toCanada. A determined effort is being made to inspect all plantings, to destroythe diseased stock, and also to prevent further importation of the infected whitepine seedlings. Inspection of such seedlings at the
RMPG3P8H–. Manual of fruit diseases . Fruit. 216 MANUAL OF FRUIT DISEASES cultivated currants and gooseberries; this stage is known as Cronartium Rihicola, the name now used to apply to any and all stages of the fungus on whatever host it is found. The fungus lives from year to year ill the bark of living pines (Fig. 57) , finally fruiting and developing a crop of eeeiospores which blow to Ribes (currant and goose- berries) near by. In pines the organism may be shipped thousands of miles. It is not known whether the fungus hibernates on the Ribes or not, although there is some evidence that such is th
RMMCR8TT–. Abb. 4e. Kill Teleutosporen- säillchen von Cronartium ribi- colum. Im oberen Teile kei- mende Telentosporen. Rechts oben einige angeklebte Uredo- sporen. (Nach Tiilasne.)
RMT1HW4Y–Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplants00tube Year: 1897 JRONARTIUM. 381 host-plants, and several species produce blister-rust on the bark of species of pine. Cronartium asclepiadeum (Willd) (U.S. Anierica). I'redo- and teleutospores occur on Ci/uanchum Vincetoxicum (perhaps Fig. 214.—Cronartium asdcpiiuhurn on Cynanchum Vincetoxicum. The urudo- sori show as spots, the teleutospore-sori as processes on the leaves, (v. Tubeuf del.) also on Gentiana aschy
![Bonniers konversations lexikon . uredoformen.Krön rost (Puccinia Lolii)värdväxlar mellan vägtorn ochhavre m. fl. gräs. Vinbär m. fl.i?i6cs-arter angripas av filtrost(Cron<irtium ribicola), som haraecidier på stamdelar av Wey-mouth- och cembratall. Törska-te på vanlig tall orsakas av ettannat aecidium (kallat Pcrider-mium Pini) ; denna svamp kanvara värdväxlande [Cronartium(se vid. d. o.) asclcpiadeiim] 1.också leva utan sommar- och vin-tersporer. Barrfällning hosgran framkallas av aecidiestadietav skvattramrosten(Chnjsomyxa Ledi) och av denmed endast teleutosporer utru.sta-de granrosten (Ch Stock Photo](https://c8.alamy.com/comp/2AJJFK7/bonniers-konversations-lexikon-uredoformenkrn-rost-puccinia-loliivrdvxlar-mellan-vgtorn-ochhavre-m-fl-grs-vinbr-m-flii6cs-arter-angripas-av-filtrostcronltirtium-ribicola-som-haraecidier-p-stamdelar-av-wey-mouth-och-cembratall-trska-te-p-vanlig-tall-orsakas-av-ettannat-aecidium-kallat-pcrider-mium-pini-denna-svamp-kanvara-vrdvxlande-cronartiumse-vid-d-o-asclcpiadeiim-1ocks-leva-utan-sommar-och-vin-tersporer-barrfllning-hosgran-framkallas-av-aecidiestadietav-skvattramrostenchnjsomyxa-ledi-och-av-denmed-endast-teleutosporer-utrusta-de-granrosten-ch-2AJJFK7.jpg "Bonniers konversations lexikon . uredoformen.Krön rost (Puccinia Lolii)värdväxlar mellan vägtorn ochhavre m. fl. gräs. Vinbär m. fl.i?i6cs-arter angripas av filtrost(Cron<irtium ribicola), som haraecidier på stamdelar av Wey-mouth- och cembratall. Törska-te på vanlig tall orsakas av ettannat aecidium (kallat Pcrider-mium Pini) ; denna svamp kanvara värdväxlande [Cronartium(se vid. d. o.) asclcpiadeiim] 1.också leva utan sommar- och vin-tersporer. Barrfällning hosgran framkallas av aecidiestadietav skvattramrosten(Chnjsomyxa Ledi) och av denmed endast teleutosporer utru.sta-de granrosten (Ch Stock Photo")
RM2AJJFK7–Bonniers konversations lexikon . uredoformen.Krön rost (Puccinia Lolii)värdväxlar mellan vägtorn ochhavre m. fl. gräs. Vinbär m. fl.i?i6cs-arter angripas av filtrost(Cron<irtium ribicola), som haraecidier på stamdelar av Wey-mouth- och cembratall. Törska-te på vanlig tall orsakas av ettannat aecidium (kallat Pcrider-mium Pini) ; denna svamp kanvara värdväxlande [Cronartium(se vid. d. o.) asclcpiadeiim] 1.också leva utan sommar- och vin-tersporer. Barrfällning hosgran framkallas av aecidiestadietav skvattramrosten(Chnjsomyxa Ledi) och av denmed endast teleutosporer utru.sta-de granrosten (Ch
RMPG3NJY–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. Fig. 211. Cronartium Ribicola a, sori on currant leaf; b, sorus and teleutosporic column; c and d: uredospores and teleutospores 1 During June, 1909, the aecidial stage of this fungus was found in a nursery of three-year-old white pine seedlings imported from Germany. Many seedlings of this importation have been distributed to several northeastern states and to Canada. A determined effort is being made to inspect all plantings, to destroy the diseased stock, and also to prevent fur
RMMCK9R5–. Fig. 212. ^ Gall produced by Cronartium (Perider- mium) cerebrum on pine. After Hedgcock. profusion of orange-colored spores each spring. Chiefly by its interference with the sap current the swellings bring about the death of many trees. The galls are perennial and may
RMRYR4CY–Dr L Rabenhorst's Kryptogamen-Flora von Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . drlrabenhorstskr0101rabe Year: 1884 Ch'onaHinm. Tt4eutosporeii ein- zellig, zu verticalen, nichtgallertar- tigen Säulehen verbunden. Fig. 1. Cronartium asclepia- deum. Teleutosporenlager von den Uredosporen am Grrunde umgeben ; (nach Tulasne). Melampsora. Teleutosporen einzellig; oder mehrzellig und dann die Zellen meist neben-, selten übereinander stehend. Uredosporen einzeln an den Basidien entstehend. Teleutosporenlager compact, horizontal ausgebreitet. Fig. 1, 2. Me
RM2CDCANB–. Fungous diseases of plants, with chapters on physiology, culture methods and technique . Fig. 211. Cronartium Ribicola a, sori on currant leaf; b, sorus and teleutosporic column ; c and d,uredospores and teleutospores 1 During June, 1909, the aecidial stage of this fungus was found in a nurseryof three-year-old white pine seedlings imported from Germany. Many seedlingsof this importation have been distributed to several northeastern states and toCanada. A determined effort is being made to inspect all plantings, to destroythe diseased stock, and also to prevent further importation of the inf
RMPG14FF–. Manual of tree diseases . Trees. Fig. 54. — Cronartium ribicola (uiedinial stage) on under side of currant leaf. season, from the same lesions several slender brown bristle- like structm-es are pushed out from the imder sides of the leaves (Fig. 55). When the affected areas of the leaf are numerous, these brown bristles so completely cover the under side of the leaf that it appears as coarse brown felt, and thus the common name for this disease on cur- rants and gooseberries is felt-rust. But little damage is caused to the affected bushes, al- though defoliation may occur earlier than nor- m
RMMCK9RC–. Fig. 210. — Cronartium ribicola on pine showing general aspect of disease. After Colley. Leaf-blight, twig-blight {Lophodermium hrachysporum Rostr.). — In Maine the leaf-blight has been noted as de- structive to a considerable number of small trees and in-
RMT1HW4P–Diseases of plants induced by Diseases of plants induced by cryptogamuc parasites; introduction to the study of pathogenic fungi, slime-fungi, bacteria, and algae. English ed. by William G. Smith diseasesofplants00tubeuoft Year: 1897 CRONARTilM. 381 host-j)lants, and several species produce blister-nist on tlu- bark of species of pine. Cronartium asclepiadeum (Willd) (U.S. America). I'redo- and teleutu.sjjurt'.s (tccur ou Cijnanchum Vincctuxicvm (perhaps Fig. 214.—Cronartium ugcUjiindmm uii Cimanchum VinretoxIcHm. The uredo- sori show as spots, the teleutospore-sori as processes on the le
RM2CDD8R4–. The rusts of Australia, their structure, nature, and classification . ^^V; 1 .« >>v , . ?,,.*- ?• -* s ?-- ? < •? *%£ - ; •* w. (J. II. Robinson, Phot. Nat. size. UROMYCLADIUM. U. NOTABILE ON ACACIA DEALBATA. 314 Explanation of Plates. PLATE XXXVII. CRONARTIUM JACKSONIAE.Fig. 282. C. jacksoniae deforming shoot of Platylobiutn jormosum ... ... nat. size 283. Witches brooms due to C. jacksoniae on branches of Aotus villosa ... nat. size 284. Normal healthy shoot of Aotus villosa .. ... ... nat. size Plate XXXVII.
![. Minnesota plant diseases. Plant diseases. 28o Minnesota Plant Diseases. Rust of pyrola [Chrysomyxa pirolae (DC.) Rostr.]. The cluster cup stage probably occurs on some conifer. See Dis- eases of Wild Plants. Rust of milkweeds [Cronartium asdepia- deum (Willd.) Fr.]. Sometimes found on oak leaves. See Dis- eases of Wild Flowers. The cluster-cups are probably produced on pine leaves. See Leaf Rust of Pines. Dis- eases of Timber and Shade Trees. The mistletoe dis- ease of spruce [Ra- zoumofskya pus ilia (Peck) Kuntze]. This parasite is a flowering plant of the mistletoe family, and is the only Stock Photo](https://c8.alamy.com/comp/PG4EY0/minnesota-plant-diseases-plant-diseases-28o-minnesota-plant-diseases-rust-of-pyrola-chrysomyxa-pirolae-dc-rostr-the-cluster-cup-stage-probably-occurs-on-some-conifer-see-dis-eases-of-wild-plants-rust-of-milkweeds-cronartium-asdepia-deum-willd-fr-sometimes-found-on-oak-leaves-see-dis-eases-of-wild-flowers-the-cluster-cups-are-probably-produced-on-pine-leaves-see-leaf-rust-of-pines-dis-eases-of-timber-and-shade-trees-the-mistletoe-dis-ease-of-spruce-ra-zoumofskya-pus-ilia-peck-kuntze-this-parasite-is-a-flowering-plant-of-the-mistletoe-family-and-is-the-only-PG4EY0.jpg ". Minnesota plant diseases. Plant diseases. 28o Minnesota Plant Diseases. Rust of pyrola [Chrysomyxa pirolae (DC.) Rostr.]. The cluster cup stage probably occurs on some conifer. See Dis- eases of Wild Plants. Rust of milkweeds [Cronartium asdepia- deum (Willd.) Fr.]. Sometimes found on oak leaves. See Dis- eases of Wild Flowers. The cluster-cups are probably produced on pine leaves. See Leaf Rust of Pines. Dis- eases of Timber and Shade Trees. The mistletoe dis- ease of spruce [Ra- zoumofskya pus ilia (Peck) Kuntze]. This parasite is a flowering plant of the mistletoe family, and is the only Stock Photo")
RMPG4EY0–. Minnesota plant diseases. Plant diseases. 28o Minnesota Plant Diseases. Rust of pyrola [Chrysomyxa pirolae (DC.) Rostr.]. The cluster cup stage probably occurs on some conifer. See Dis- eases of Wild Plants. Rust of milkweeds [Cronartium asdepia- deum (Willd.) Fr.]. Sometimes found on oak leaves. See Dis- eases of Wild Flowers. The cluster-cups are probably produced on pine leaves. See Leaf Rust of Pines. Dis- eases of Timber and Shade Trees. The mistletoe dis- ease of spruce [Ra- zoumofskya pus ilia (Peck) Kuntze]. This parasite is a flowering plant of the mistletoe family, and is the only
RMMCKAGW–. Fig. 210. — Cronartium ribicola on pine showing general aspect of disease. After CoUey. Leaf-blight, twig-blight (Lophodermium brachysporum Rostr.). — In Maine the leaf-blight has been noted as de- structive to a considerable number of small trees and in-
RMT1HW4X–Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplants00tube Year: 1897 Fig. 214.—Cronartium asdcpiiuhurn on Cynanchum Vincetoxicum. The urudo- sori show as spots, the teleutospore-sori as processes on the leaves, (v. Tubeuf del.) also on Gentiana aschyiadca). The aecidial stage, known as Peridcrmium Cornui Eostr. et Ivleb. produces a blister-rust on the bark of Finus sylvcstris. Fio. 215.—Cronnrtium rwlepindtuin. Section of a C'l/nanck urn leaf. The leaf-parenchyma i
RM2CDD8N2–. The rusts of Australia, their structure, nature, and classification . G. H. Robinson, Pilot. CRONARTIUM.C. JACKSONIAE ON PLATYLOBIUM AND AOTUS. 3i6 Explanation of Plates. PLATE XXXVIII. CRONARTIUM JACKSONIAE.Fig.2S5. Witches broom, due to C. jacksoniae on Gomfholobium latifolium ... nat. size 286. Normal healthy shoot of Gomfholobium latifolium ... ... nat. size Plate XXXVIII.. G. H. Robinson, Phot. • Nat. size. CRONARTIUM. C. JACKSONIAE ON GOMPHOLOBIUM LATIFOLIUM. 3i8 Explanation of Plates. PLATE XXXIX. (All aecidia X 50, and aecidiosfores X 300.) AECIDIUM.Fig. 2S7. A. veronicae on Veronica
RMPG4624–. The fungi which cause plant disease . Plant diseases; Fungi. 352 THE FUNGI WHICH CAUSE PLANT DISEASE C. comptoniae Arth. I (=Periderinium pyriforme) on Pinus trunks. Ill on Comp- tonia. The Peridermium is perennial in the trunks of the pine where it does considerable injur'. Clinton sowed aeciospores from pine. Fig. 256.—Cronartium comptoru;£ (PehdermiumJ on Pinus. After Clinton. on Comptonia and in about twelve daj^s the uredinia began to appear.^''' C. quercus (Brond.) Schr. Hetercecious I (=Peridermium cerebrum) on pine. Ill on oak. Successful inoculations were first reported by Shear,-*
RMMCK6FM–. Fig. 214.—Cronartium agcUpiadmoii on Cynanchum Vincetoxicum. The uredo- sori show as spots, the teleutospore-sori as processes on the leaves, (v. Tubeuf del.) also on Gcntiana asdepiadca). The aecidial stage, known as Peridcrmium Cornui Eostr. et Kleb. produces a blister-rust on the bark of Finns sylvestris.
RMT1HWNB–Diseases of economic plants (1921) Diseases of economic plants diseasesofeconom01stev Year: 1921 Trees and Timber 399 juring the lower branches of large trees; serious damage, however, is not common. Damping-off {Fusarium sp.). — The general characters are those mentioned under damping-off. It is serious in Fig. 211. — Cronartium ribicola on pine show- ing sporiferous pustules. After Colley. Vermont, New York, Missouri, and probably in many other states, killing the seedlings in nurseries as soon as they ap- pear above ground. The beds should be given all ventilation possible. A top-dress
RM2CDD8MX–. The rusts of Australia, their structure, nature, and classification . (J. II. Robinson, Phot. Nat. size. UROMYCLADIUM. U. NOTABILE ON ACACIA DEALBATA. 314 Explanation of Plates. PLATE XXXVII. CRONARTIUM JACKSONIAE.Fig. 282. C. jacksoniae deforming shoot of Platylobiutn jormosum ... ... nat. size 283. Witches brooms due to C. jacksoniae on branches of Aotus villosa ... nat. size 284. Normal healthy shoot of Aotus villosa .. ... ... nat. size Plate XXXVII.. G. H. Robinson, Pilot. CRONARTIUM.C. JACKSONIAE ON PLATYLOBIUM AND AOTUS. 3i6 Explanation of Plates. PLATE XXXVIII. CRONARTIUM JACKSONIAE.
RMPG4ANY–. Botany for agricultural students . Botany. 402 THALU)PHYTES disease on the leaves and fruit. Upon the Apple tree, the aecidia stage is produced, and the aecidiospores are able to attack the Cedar and form new galls, thus completing the life cycle as shown in Figure 361. Pine Tree Blister-rust (Cronartium ribicola). — As its name suggests this Rust attacks Pine trees. It was introduced from Europe about ten years ago and has now become a seri- ous disease in this country. It has its aecidial stage on Pines with five leaves in a fascicle, such as the White Pine and Sugar Pine, and has species
RMMCK635–. Fig. 214.—Cronartium asdcpiiuhurn on Cynanchum Vincetoxicum. The urudo- sori show as spots, the teleutospore-sori as processes on the leaves, (v. Tubeuf del.) also on Gentiana aschyiadca). The aecidial stage, known as Peridcrmium Cornui Eostr. et Ivleb. produces a blister-rust on the bark of Finus sylvcstris.
![Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] CRONARTIUM 319 CRONARTIUM (Fries.) Aecidia produced on conifer leaves (so far as known), peridia elongated, aecidiospores in chains. Uredospores pro- duced in a pseudoperidium, brown. Teleutospores i-celled, Fig. 96.—Cronartium ribicohint. i, uredo and teleuto- spore stages on leaf of black currant; 2, uredospores, (Z, and teleutospores, b, cemented together in a column ; 3, uredospore ; 4, teleutospores, two of which are germi- nating ; 5, aecidia on bark of Weymouth pine; 6 Stock Photo](https://c8.alamy.com/comp/T1HR2D/diseases-of-cultivated-plants-and-diseases-of-cultivated-plants-and-trees-diseasesofcultiv00massuoft-year-1910-cronartium-319-cronartium-fries-aecidia-produced-on-conifer-leaves-so-far-as-known-peridia-elongated-aecidiospores-in-chains-uredospores-pro-duced-in-a-pseudoperidium-brown-teleutospores-i-celled-fig-96cronartium-ribicohint-i-uredo-and-teleuto-spore-stages-on-leaf-of-black-currant-2-uredospores-z-and-teleutospores-b-cemented-together-in-a-column-3-uredospore-4-teleutospores-two-of-which-are-germi-nating-5-aecidia-on-bark-of-weymouth-pine-6-T1HR2D.jpg "Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] CRONARTIUM 319 CRONARTIUM (Fries.) Aecidia produced on conifer leaves (so far as known), peridia elongated, aecidiospores in chains. Uredospores pro- duced in a pseudoperidium, brown. Teleutospores i-celled, Fig. 96.—Cronartium ribicohint. i, uredo and teleuto- spore stages on leaf of black currant; 2, uredospores, (Z, and teleutospores, b, cemented together in a column ; 3, uredospore ; 4, teleutospores, two of which are germi- nating ; 5, aecidia on bark of Weymouth pine; 6 Stock Photo")
RMT1HR2D–Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] CRONARTIUM 319 CRONARTIUM (Fries.) Aecidia produced on conifer leaves (so far as known), peridia elongated, aecidiospores in chains. Uredospores pro- duced in a pseudoperidium, brown. Teleutospores i-celled, Fig. 96.—Cronartium ribicohint. i, uredo and teleuto- spore stages on leaf of black currant; 2, uredospores, (Z, and teleutospores, b, cemented together in a column ; 3, uredospore ; 4, teleutospores, two of which are germi- nating ; 5, aecidia on bark of Weymouth pine; 6
RMRGWJ92–. Bulletin. 1901-13. Agriculture; Agriculture. Bui. 206. Bureau ot Plant Industry, U. S. Dept. of Agriculture. Plate. Cronartium Ribicola on Pinus Strobus and Ribes.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. United States. Bureau of Plant Industry, Soils, and Agricultural Engineering. Washington Govt. Print. Off
RMPG4AP5–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 249.âPeHdennium giganteum on Pinus Thunbergii from Japan, (v. Tubeuf phot.âthe specimen presented by Prof. Grasmann of Tokio.) P. brevius Barel. On Pinus excelsa in India. P. complanatum Barcl. On Pinus longifolia in India; on rind as well as needles. B. On the rind or bark: Peridermium Cornui Eostr. et Kleb. (now Cronartium asclepiadeum, p. 381). On Pinus sylvestris. P. strobi Kleb. (now Cro- â nartium rihicol
RMMCK59R–. Fig. 214.—Cronartium ugcUjiindmm uii Cimanchum VinretoxIcHm. The uredo- sori show as spots, the teleutospore-sori as processes on the leaves, (v. Tubeuf del.) also on Gentiana asdcpiadca). The aecidial stage, known as Feridcrmium Cornui Eostr. et Kleb. produces a blister-ru.st on the bark of Pinus sulvestris.
RMT3TT71–Archive image from page 55 of Die Natürlichen Pflanzenfamilien nebst ihren. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet dienatrlichenp11engl Year: 1900 ' Fig. 2t). Ä u. B Cronartium ribicolum Dietr. TelentosporenKiger auf Ribes nigrum. A nat. Gr. B 5fach vergr. C Cronartium ascUpiadeum (Willd.) Fr. Spitzenteil eines Tsleutosporenlagers mit keimenden Teleutosporen und einigen anhaftenden Uredosporen. Vergr. ca. 400. (A u. D Original, C nach Tnlasne.) Gegen 30
RMRDXGWA–. Introduction to the study of fungi; their organography, classification, and distribution, for the use of collectors. Fungi. RUST FUNGI—UREDINEAE 245 - , c latter. In the one remaining genus of the section, that of Cronartium, the teleutospores surround a vertical columella, but in external appearance the species resemble Uredines as little as possible, and are not unlike persistent tendrils of some member of the Melanconieae. The Didymosporae are well typified by the large and important genus Pioccinia, with its transversely septate teleuto- spores. The grades are like those of Uromyces, viz
RMPG4629–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLANT DISEASE 351 I (=Peridermium strobi). ^cia caulicolous, causing fusiform swellings of the stem, rounded to elongate; peridium inflated, rup- turing at sides, thick, membranous. Spores ellipsoid to ovoid, 18-20 X 22-23 fi, wall colorless, coarsely verrucose except on elongate smooth spot, 2-2.5 n thick, on smooth spot 3-3.5 n thick. II. Uredinia hypophyllous, thickly scattered in groups, round, pustular, 0.1-0.3 mm., at first bright yellow; peridia delicate.. Fio. 255.—Cronartium. A, urediaium; B, telium.
![. Fig. 58. — Anthracnose of white currants. After Clinton. Experiment Station: ''Spray thoroughly with Bordeaux mixture, commencing before the leaves appear. Make the second treatment as the leaves are unfolding and thereafter at intervals of ten to fourteen days until the fruit is two-thirds grown. In wet seasons make one or two applications after the fruit is gathered. When worms appear, add Paris green or green arsenoid to the Bordeaux." European rust {Cronartium rihicola F. v. Wal.). — Orange- Stock Photo](https://c8.alamy.com/comp/MCKAAH/fig-58-anthracnose-of-white-currants-after-clinton-experiment-station-spray-thoroughly-with-bordeaux-mixture-commencing-before-the-leaves-appear-make-the-second-treatment-as-the-leaves-are-unfolding-and-thereafter-at-intervals-of-ten-to-fourteen-days-until-the-fruit-is-two-thirds-grown-in-wet-seasons-make-one-or-two-applications-after-the-fruit-is-gathered-when-worms-appear-add-paris-green-or-green-arsenoid-to-the-bordeauxquot-european-rust-cronartium-rihicola-f-v-wal-orange-MCKAAH.jpg ". Fig. 58. — Anthracnose of white currants. After Clinton. Experiment Station: ''Spray thoroughly with Bordeaux mixture, commencing before the leaves appear. Make the second treatment as the leaves are unfolding and thereafter at intervals of ten to fourteen days until the fruit is two-thirds grown. In wet seasons make one or two applications after the fruit is gathered. When worms appear, add Paris green or green arsenoid to the Bordeaux." European rust {Cronartium rihicola F. v. Wal.). — Orange- Stock Photo")
RMMCKAAH–. Fig. 58. — Anthracnose of white currants. After Clinton. Experiment Station: ''Spray thoroughly with Bordeaux mixture, commencing before the leaves appear. Make the second treatment as the leaves are unfolding and thereafter at intervals of ten to fourteen days until the fruit is two-thirds grown. In wet seasons make one or two applications after the fruit is gathered. When worms appear, add Paris green or green arsenoid to the Bordeaux." European rust {Cronartium rihicola F. v. Wal.). — Orange-
RMREF5NE–. Comparative morphology of Fungi. Fungi. Zaghouania Cystopsora Endophyllum Kunkelia CRONARTIACEAE Cronartium Chrysomyxza MELAMPSORACEAE Calyptospora Thecopsora Pucciniastrum Melampsoridium Melampsorella Hyalopsora. Mileeina UredinopBis COLEOSPORIACEAE Coleosporium Goplana Gallowaya Diagram XXXVIII. pine needles; their sporophytes are specialized on different angiosperms as that of C. Sonchi on Sonchus. C. Senecionis and C. Campanulae, besides growing on their normal sporophyte hosts (Senecio and Campanula respectively), also attack representatives of exotic families. In Chrysomyxa the micro-
![. Fig. 58. — Anthracnose of white currants. After Clinton. Experiment Station: "Spray thoroughly with Bordeaux mixture, commencing before the leaves appear. Make the second treatment as the leaves are unfolding and thereafter at intervals of ten to fourteen days until the fruit is two-thirds grown. In wet seasons make one or two applications after the fruit is gathered. When worms appear, add Paris green or green arsenoid to the Bordeaux." European rust {Cronartium ribicola F, v. Wal.). — Orange- Stock Photo](https://c8.alamy.com/comp/MCKB1D/fig-58-anthracnose-of-white-currants-after-clinton-experiment-station-quotspray-thoroughly-with-bordeaux-mixture-commencing-before-the-leaves-appear-make-the-second-treatment-as-the-leaves-are-unfolding-and-thereafter-at-intervals-of-ten-to-fourteen-days-until-the-fruit-is-two-thirds-grown-in-wet-seasons-make-one-or-two-applications-after-the-fruit-is-gathered-when-worms-appear-add-paris-green-or-green-arsenoid-to-the-bordeauxquot-european-rust-cronartium-ribicola-f-v-wal-orange-MCKB1D.jpg ". Fig. 58. — Anthracnose of white currants. After Clinton. Experiment Station: "Spray thoroughly with Bordeaux mixture, commencing before the leaves appear. Make the second treatment as the leaves are unfolding and thereafter at intervals of ten to fourteen days until the fruit is two-thirds grown. In wet seasons make one or two applications after the fruit is gathered. When worms appear, add Paris green or green arsenoid to the Bordeaux." European rust {Cronartium ribicola F, v. Wal.). — Orange- Stock Photo")
RMMCKB1D–. Fig. 58. — Anthracnose of white currants. After Clinton. Experiment Station: "Spray thoroughly with Bordeaux mixture, commencing before the leaves appear. Make the second treatment as the leaves are unfolding and thereafter at intervals of ten to fourteen days until the fruit is two-thirds grown. In wet seasons make one or two applications after the fruit is gathered. When worms appear, add Paris green or green arsenoid to the Bordeaux." European rust {Cronartium ribicola F, v. Wal.). — Orange-
RMRHTARK–. Biennial report of the Forest Commissioner. Forests and forestry -- Maine. Bu! 206, Bureau of Plant Industry, U. S. Dept. of Agriculture. Plate I.. *MO£N hf.O.L'TH HALTIMORE Cronartium Ribicola onT'inus Strobus and Ribes. (White-Pine Blister Rust.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Maine. Forest Commissioner. [Augusta, Me. : Forest Commissioner
RMMCKAGX–. Fig. 211. — Cronartium ribicola on pine show- ing sporiferous pustules. After Colley. Vermont, New York, Missouri, and probably in many other states, killing the seedlings in nurseries as soon as they ap- pear above ground. The beds should be given all ventilation possible. A top-dressing of sterilized sand sprinkled over the beds immediately after germination resulted in 30 per cent of disease against 42 per cent in the untreated part. For dis- infection of soil, see p. 460.
RMRH2RY8–. The British rust fungi (Uredinales), their biology and classification. Uredineae. CRONARTIUM 315 produce the same on Vincetoxicum, Ji'emesia, Cynanchum, and Verbena., as well as on many species of Paeonia. There is reason for believing that the parasitism on Xemesia, at least, has arisen at a very recent date. This species is therefore plurivorous in its teleuto-stage, but not in its secidial stage. The mycelium is perennial, according to Fischer, in the pine- branches ; it produces secidiosiaores in May and infects the alternate hosts, on which uredo- arid teleutospores are borne during the
RMMCK9RA–. Fig. 211. — Cronartium ribicola on pine show- ing sporiferous pustules. After Colley. Vermont, New York, Missouri, and probably in many other states, killing the seedlings in nurseries as soon as they ap- pear above ground. The beds should be given all ventilation possible. A top-dressing of steriHzed sand sprinkled over the beds immediately after germination resulted in 30 per cent of disease against 42 per cent in the untreated part. For dis- infection of soil, see p. 460.
RMRH2Y0B–. The British rust fungi (Uredinales), their biology and classification. Uredineae. 56 CRONARTIUM RIBICOLA of Rihes (Fig. 34); they have been recorded on 26 out of about 50 known species. The spermogones and aecidia are formed on stems and branches of the five-leaved species of Pinus: they have been found on five out of the eighteen Pines of that group, but do not attack species having 2 or 3 leaves in a fascicle. The following account is founded on that of Spaulding (1911). The basidiospores are formed about the beginning of August, and if they are blown by the wind, and adhere to moist young
RMMCKC9P–. Fig. 96.—Cronartium ribicohint. i, uredo and teleuto- spore stages on leaf of black currant; 2, uredospores, (Z, and teleutospores, b, cemented together in a column ; 3, uredospore ; 4, teleutospores, two of which are germi- nating ; 5, aecidia on bark of Weymouth pine; 6, aecidiospores. Figs, i and 5 nat. size, remainder highly mag. aggregated into a column which springs from the sorus of uredospores. Weymouth pine rust {Cronartium ribicolum, Deitr. = Peridermium sirobi, Kleb.).—The aecidium stage of this
RMRE58RX–. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. 48 the basidiospores from the germinating teliospores infect pine leaves, on which aecia are produced in the following spring. In all these fungi, in addition to those producing either several generations per year, or one (as in Gymnosporangium, Coleosporium, Cronartium, Milesia, Hyalopsora, Melampsorella), or two (as in Chrysomyxa), the hosts are represented by evergreen plants, while in Micro-Uredinales with one generation of teliospores the mycelium overwinters in the evergreen leaves or overwintering buds. In some r
RMMCK6FB–. Fig. 215.—Cronartium asclepiadnnn. Section of a Cynanchum leaf. The leaf-parenchyma is permeated with mycelium, and sori are formed on the lower epidermis. A, uredo-sorus ; B, televitospore-sorus, many spores of which have germinated and given off promycelia with sporidia. (v. Tubeuf del.) Brown spots may be found on the leaves of the Cynanchinn'^ during July, August, and September (Fig. 214). On examina- tion of the spots with a lens, the leaf-epidermis will be found ^A very common plant in Europe though not indigenous to Britain. (Edit.)
RMRD6TBC–. The cultivated evergreens; a handbook of the coniferous and most important broad-leaved evergreens planted for ornament in the United States and Canada. Evergreens; Conifers. INSECTS, DISEASES, AND INJURIES 155 Cronartium rihicola, Fischer, which is a most formidable enemy of the white pines (i. e., those in which the needles are in fascicles of five). Without doubt all five-needled pines are liable to be at- tacked if exposed to the pathogen. The fungus was first found in North Amer- ica at Geneva, New York, in 1906, but it is probable that it was present for some years prior to that date.
RMMAAH42–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz . Ch'onaHinm. Tt4eutosporeii ein- zellig, zu verticalen, nichtgallertar- tigen Säulehen verbunden. Fig. 1. Cronartium asclepia- deum. Teleutosporenlager von den Uredosporen am Grrunde umgeben ; (nach Tulasne). Melampsora. Teleutosporen einzellig; oder mehrzellig und dann die Zellen meist neben-, selten übereinander stehend. Uredosporen einzeln an den Basidien entstehend. Teleutosporenlager compact, horizontal ausgebreitet. Fig. 1, 2. Me- lampsora betulina. Fig. 1. Theil eines Uredosporen- lagers, von der Perid
RMRGBD0M–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. 8 BULLETIN 247, U. S. DEPARTMENT OF AGRICULTURE. For a number of years Prof. E. Bethel has collected from the leaves of Ribes longiflorum at Denver, Boulder, and elsewhere in Colorado a species of Cronartium which is apparently not identical with the European Cronartium ribicola. The senior writer collected abundant specimens of the uredinial and telial forms of this rust both at Boulder and Denver, Colo., in October, 1914. The telia of this Cronartium are larger, more abundant, and much more conspicuous than those of
RMME6KN7–. Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet . Fig. 2t). Ä u. B Cronartium ribicolum Dietr. TelentosporenKiger auf Ribes nigrum. A nat. Gr. B 5fach vergr. C Cronartium ascUpiadeum (Willd.) Fr. Spitzenteil eines Tsleutosporenlagers mit keimenden Teleutosporen und einigen anhaftenden Uredosporen. Vergr. ca. 400. (A u. D Original, C nach Tnlasne.) Gegen 30 Arten, die z. T. als sogen, biologische Species erscheinen. Die Aecidien, die nadell)evohnenden Arten der ehe
RMRGBD20–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. BULLETIN OF THE PAMNTOFAfflll No. 247 Contribution from the Bureau of Plant Industry, Wm. A. Taylor, Chief July 20, 1915.. (PROFESSIONAL PAPER.) A DISEASE OF PINES CAUSED BY CRONARTIUM By George G. Hedgcock, Pathologist, and William H. Long, Forest Pathologist, Investigations in Forest Pathology. CONTENTS. History of the fungus 1 Morphology of the fungus 2 Synonymy and description of the fungus 3 Inoculation experiments with the fungus 5 Distribution of the fungus 8 Distribution of the fecial form 8 Distribution of the
RMMCRBC7–. A l^ndoplijUum sempervivi: 1 .^abitusi; 2 2;eleutofpore mit iöaftbie. B Chrysomyxa rhododendri: 1 iiijibienform (Aecidium abietiuuiii) auf %id)ten^ nabeln; 2 Xcleutofpoi-enforiu auf einem SKpenrofenblatt; 3 leleutofpore mit Süafibien. C C'ronartium ribicolum: Xe^ leutofporenform auf einem liibos^äitatt. D Croiiartium asclepiadeum: StbO. 30: 3lDftpi[ä 1 äjibienfoi'md'orideriuium piiii) auf einem i'liefernsiueiß; 2 Seteutofporen mit Siafibieit. E Mülampsora treinulae: 1 Selcutofporenforin auf einem gittevpappelbratt; 2 »ui-d;- fc(;nitt burd; ein 2;eleuto= fporentager. F Caeoma doforraaiis: ßin
RMRE5BFK–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. SPORE VIABILITY AND GERMINATION To explore the influence of environmental conditions on spores during dissemination and germi- nation, many experiments were run under controlled and monitored environmental conditions. Experi- ments were made to investigate all spore stages involved in infection of comandra and pine, that is (1) aeciospores on pine, with ability to infect comandra; (2) urediniospores on comandra, with abil- ity to reinfect comandra plants; (3) teliospo
RMMCK625–. Flcuf phot.—the specimen presented by Prof. (Jrasnianii of Tokio.) P. brevius Barcl. On Pinus excelsa in India P. complanatum Barel. On Pinus longifolia as needles. 11. On the rind or burk: PeridermiumCornui Rcstr. et Kleb. (now Cronartium nsclepiadeum, p. 381). On Pinux xi/fri'stris. P. strobi Kiel I. (now Cro- itiii-tium n'birolK, p. 382). On Piniis Strob us, P. La mhertia na, (and P. Ccmbra). P.pini(VVilld.). On Pinus s>/h-estris. (Britain and U.S. America.) P. orientale Cooke. On Pimis rigida and /'. virgini- ana in America ; also P. longifolia in India. India: on rind a.s well
RMRE5BBR–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. ately low relative humidity, and it is doubtful that pine infection could have resulted. In autumn, though longer moist periods associated with frontal storms are again more common, temperatures are probably too cold for basidiospore casting. Thus it seems that weather conditions that could lead to abundant pine infection are rare in the Rocky Mountain States. Tissue Susceptibility By the time teUa are present on comandra, stems of lodgepole pine have finished elongat
RMRGB891–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. Fig. 2.—Outline map of the United States, showing the known distribution of Cronartium ribicola and C. occidcntale in North America to January 1, 1920. Localities for Cronartium occidentale are shown by- black squares in the Pacific coast and Roclq^ Mountian regions, the easternmost point being in western Kansas. This is where it was found in 1892, but it has not been seen there since. Localities for C. ribicola are indicated by double cross hatching and black dots, nearly all bemg north of the Potomac and Ohio Rivers
RMRDCXHM–. Manual of fruit diseases . Fruit. 216 MANUAL OF FRUIT DISEASES cultivated currants and gooseberries; this stage is known as Cronartium Rihicola, the name now used to apply to any and all stages of the fungus on whatever host it is found. The fungus lives from year to year ill the bark of living pines (Fig. 57) , finally fruiting and developing a crop of eeeiospores which blow to Ribes (currant and goose- berries) near by. In pines the organism may be shipped thousands of miles. It is not known whether the fungus hibernates on the Ribes or not, although there is some evidence that such is th
RMRM8P9K–. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). Plate I.— The Under Surface of Rust-Infested Current Leaves. A. Uredo and teteuto sort of Cronartium ribicola (X4). B. The same, wore enlarged.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. New York (State). Dept. of Agriculture; New York State Agricultural Experiment Station; Cornell University. Agricultural Experiment Station. Alban
RMRE58T2–. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. to Melampsoraceae; but the aecial structure indicates their kinship with Pucciniaceae. In Pucciniastreae (Figure 4, a —d) of the family Melampsoraceae the unicellular teliospores divide longitudinally into two, 46 four, or more cells; they are either subepidermal or intraepidermal. In the genus Cronartium (Figure 4, g) unicellular teliospores are fused into a column emerging above the surface. In the genus Chrysomyxa (Figure 4, f) unicellular teliospores rise in vertical chains, together forming waxy red sori. In Melamp
RMRE5BDY–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. Figure 13.-Appressorium, at end of aeciospore germ tube, attached to stomate of a comandra leaf (X 850). 13. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Krebill, R. G. (Richard G. ), 1936-. Ogden, Utah : Intermountain Forest and Range Experiment Station, Dept. of Agriculture
RMRE5BE2–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. INFECTION Comandra, jack pine, ponderosa pine, and lodgepole pine have previously been infected with comandra rust in experimental trials (Adams 1919, Anderson 1960, Andrews et al. 1963, and Hedgcock and Long 1915). However, virtually nothing is reported about the processes of infection or the influ- ence of moisture, temperature, or host phenology on infection. Some information on these factors was obtained in the following trials. COMANDRA of infection spots (eviden
RMRGWJ7W–. Bulletin. 1901-13. Agriculture; Agriculture. 26 THE BLISTETl RUST OF WHITE PINE. native species there. The cultivated species are favorite garden fruits with all peoples and are found throughout the most extensive of cultivated areas. The cultivated species thus occupy just the territory which the wild ones do not. A better group of hosts could hardly be conceived for the rapid and universal distribution of a fungus over immense regions cf the earth's surface.. Kio.:{. —A diseased young tree of Finus atrubus with pypiiidial drops. LIFE HISTORY OF CRONARTIUM RIBICOLA. The sjxtridia produced }
RMRGBB06–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. 22 BULLETIN 658, U. S. DEPARTMENT OF AGRICULTURE. The maps will be found valuable not only as an interpretation of the data taken in intensive disease surveys in connection with timber surveys but in the appraisal, marking, and general administration of the sale area. With regard to appraisal the map will indicate the location of seriously infected areas and also the rot percentages. With respect to marking, the map will show the exact area of the. Fig. 22. — Cronartium colcosporioides, pine rust, blister form, on 2-ye
RMRE5BFF–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. 100. 3 8 13 TEMPERATURE 18 23 (Degrees Celsius) Figure 4.-Germination of aeciospores after 24 hours' incubation at several temper- atures. The darker lines are means of the individual samples. An exploratory test also was conducted to determine how quickly aeciospores germinate and germ tubes grow. Methods used to collect and prepare spores were similar to those described above, but only one collection (Cache National Forest) was tested. Germination of spore groups wa
RMRDWCW2–. Botany, with agricultural applications. Botany. 402 THALLOPHYTES disease on the leaves and fruit. Upon the Apple tree, the aecial stage is produced, and the aeciospores are able to attack the Cedar and form new galls, thus completing the life cycle as shown in Figure 361. Pine Tree Blister-rust (Cronartium ribicola).—As its name suggests this Rust attacks Pine trees. It was introduced from Europe about ten years ago and has now become a seri- ous disease in this country. It has its aecial stage on Pines with five leaves in a fascicle, such as the White Pine and Sugar Pine, and has species of
![. [Bulletins on forest pathology : from Bulletin U.S.D.A., Washington, D.C., 1913-1925]. Trees; Plant diseases. 8 BULLETIN" 247, IT. S. DEPARTMENT OF AGRICULTURE. For a number of years Prof. E. Bethel has collected from the leaves of Ribes longiflorum at Denver, Boulder, and elsewhere in Colorado a species of Cronartium which is apparently not identical with the European Cronartium ribicola. The senior writer collected abundant specimens of the uredinial and telial forms of this rust both at Boulder and Denver, Colo., in October, 1914. The telia of this Cronartium are larger, more abundan Stock Photo](https://c8.alamy.com/comp/RG903D/bulletins-on-forest-pathology-from-bulletin-usda-washington-dc-1913-1925-trees-plant-diseases-8-bulletinquot-247-it-s-department-of-agriculture-for-a-number-of-years-prof-e-bethel-has-collected-from-the-leaves-of-ribes-longiflorum-at-denver-boulder-and-elsewhere-in-colorado-a-species-of-cronartium-which-is-apparently-not-identical-with-the-european-cronartium-ribicola-the-senior-writer-collected-abundant-specimens-of-the-uredinial-and-telial-forms-of-this-rust-both-at-boulder-and-denver-colo-in-october-1914-the-telia-of-this-cronartium-are-larger-more-abundan-RG903D.jpg ". [Bulletins on forest pathology : from Bulletin U.S.D.A., Washington, D.C., 1913-1925]. Trees; Plant diseases. 8 BULLETIN" 247, IT. S. DEPARTMENT OF AGRICULTURE. For a number of years Prof. E. Bethel has collected from the leaves of Ribes longiflorum at Denver, Boulder, and elsewhere in Colorado a species of Cronartium which is apparently not identical with the European Cronartium ribicola. The senior writer collected abundant specimens of the uredinial and telial forms of this rust both at Boulder and Denver, Colo., in October, 1914. The telia of this Cronartium are larger, more abundan Stock Photo")
RMRG903D–. [Bulletins on forest pathology : from Bulletin U.S.D.A., Washington, D.C., 1913-1925]. Trees; Plant diseases. 8 BULLETIN" 247, IT. S. DEPARTMENT OF AGRICULTURE. For a number of years Prof. E. Bethel has collected from the leaves of Ribes longiflorum at Denver, Boulder, and elsewhere in Colorado a species of Cronartium which is apparently not identical with the European Cronartium ribicola. The senior writer collected abundant specimens of the uredinial and telial forms of this rust both at Boulder and Denver, Colo., in October, 1914. The telia of this Cronartium are larger, more abundan
RMREGF3J–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz. Cryptogams -- Germany; Cryptogams -- Austria; Cryptogams -- Switzerland. 138. Ch'onaHinm. Tt4eutosporeii ein- zellig, zu verticalen, nichtgallertar- tigen Säulehen verbunden. Fig. 1. Cronartium asclepia- deum. Teleutosporenlager von den Uredosporen am Grrunde umgeben ; (nach Tulasne). Melampsora. Teleutosporen einzellig; oder mehrzellig und dann die Zellen meist neben-, selten übereinander stehend. Uredosporen einzeln an den Basidien entstehend. Teleutosporenlager compact, horizontal ausgebreitet. Fig. 1, 2.
RMRE5BFT–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. Figure 1.- Comandra umbellata ssp. pallida, Figure 2.- Cronartium comandrae canker in host plant for the uredinial and telial lodgepole pine in Custer National Forest, stages of Cronartium comandrae in the Montana. Bark was removed by rodent Rocky Mountain States. chewing, as is typical in the West. 2. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustra
RMRH2T0P–. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. CRONARTIUM 313 As the remarkable suggested secidium-stage may possibly be found in this country, it will be convenient to add here the description given of it, so as to aid in its identification : PERIDERMIUM CONORUM-PlCEjE (JEcidiinii conorum-Piceae Reess.) ^Ecidia on the outer surface of the scales, large, ±, cm. or more in diam., oblong or irregular in shape, one or two (or in any case few) on each scale, immersed, white ; spores ellipsoidal, orange, 28—35 x 18— 24 jx ; epispore with numerou
RMRGBB7H–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. FOREST DISEASE SURVEYS. writer has tested and proved this assertion in practice while employed by the Forest Service on the Big Mole timber survey made in 1914 in the Deerlodge Na- tional Forest of Montana. From the data thus collected pathological maps were made, giving in colors the areas of the stand in- fected, respectively, with the pine rust (Cronartium coleo- sporioides (D. and H.) Arthur), both gall and blister forms, mistletoe (Razoumofskya americana (Nu11.) Kuntze), heart-rots. Fig. 7.—Fomes pinicola, the red
RMRDJ5NY–. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. Fig. 211. Cronartium Ribicola a, sori on currant leaf; b, sorus and teleutosporic column; c and d: uredospores and teleutospores 1 During June, 1909, the aecidial stage of this fungus was found in a nursery of three-year-old white pine seedlings imported from Germany. Many seedlings of this importation have been distributed to several northeastern states and to Canada. A determined effort is being made to inspect all plantings, to destroy the diseased stock, and also to prevent fur
RMREGF3H–. Dr. L. Rabenhorst's Kryptogamen-Flora von Deutschland, Oesterreich und der Schweiz. Cryptogams -- Germany; Cryptogams -- Austria; Cryptogams -- Switzerland. Ch'onaHinm. Tt4eutosporeii ein- zellig, zu verticalen, nichtgallertar- tigen Säulehen verbunden. Fig. 1. Cronartium asclepia- deum. Teleutosporenlager von den Uredosporen am Grrunde umgeben ; (nach Tulasne). Melampsora. Teleutosporen einzellig; oder mehrzellig und dann die Zellen meist neben-, selten übereinander stehend. Uredosporen einzeln an den Basidien entstehend. Teleutosporenlager compact, horizontal ausgebreitet. Fig. 1, 2. Me- l
RMRE58GE–. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. FIGURE 74. Peridermium pini (Willd.) Kleb. on Pinus: 1 - aecia; 2 - peridial cells, x 600. (Orig.) FIGURE 75. Cronartium gentianeum Thiim. on Gentiana: 1 - urediospores; 2 - teliospores, x 600. (Orig.) 354. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Botanicheskii institut im. V. L. Komarova. Jerusalem [Published for the National Science Foundati
RMRE5BC4–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. in plant communities near rust-infected lodgepole pine for long periods even though heavily infected by comandra rust almost every year. The combination of susceptible comandra shoots and general rainfall during the period aeciospores are being shed makes conditions suitable for primary infection, as the rust is usually common by mid-July on comandra near infected pine stands. The capability of aeciospores to germinate weU at prevailing cool temperatures also enhances
RMRE5BDN–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. Each plot consisted of lodgepole pines with 10 marked cankers and 10 marked branch shoots on the same trees, and 10 comandra shoots in nearby open areas. Length of marked shoots and occurrence of spore-producing structures were recorded at least once each month of the growing season. Analysis of these plots (fig. 15) tells us much about the phenology of the hosts and parasite in the Rocky Mountains. Comandra sprouts early in the spring; it emerges through the soil soo
RMRGB886–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. WHITE-PIXE BLISTER RUST. 7 lislied in New England, New York, Wisconsin, Minnesota, and Canada. It has been known since 1892 that there was a fungus on Kibes in the West much resembling Cronartium rihicola, but until 1917 its alternate stage on pines was unknown. In that year the Office of Investigations in Forest Pathology began work upon this western fungus, which was soon found to have an alternate stage on Pinus edulis and P. monophylla in Colorado and Arizona (50, 114) and was named Cronartium occidentale. Its dist
RMRGBJ0T–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 957 Contribntion from the Bureau of Plant Industry WM. A. TAYLOR, Chief Washington, D. C. PROFESSIONAL PAPER February 6,1922 INVESTIGATIONS OF THE WHITE-PINE BLISTER RUST By PERLEY SPAULDING, Pathologist, Office of Investigations in Forest Pathology CONTENTS Page Scope of the Investigations 1 Origin and Distribution of Cronartium ^ ribicola 3 Hosts of Cronartium ribicola 11 'Life History of Cronartium ribicola . 24 Page Overwintering of Cronartium ribicola . 68 Impor
RMRGB8AW–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. .JT^'^U-i. Washington, D. C. PROFESSIONAL PAPER February 6, 1922 INVESTIGATIONS OF THE WHITE-PINE BLISTER RUST. By Perley Spaulding, Pathologist, Investigations in Forest Pathology. CONTENTS. Page. Scope of the investigations 1 Origin and distribution of Cronartiuni ribi- cola 3 Hosts of Cronartiiim ribicola 11 Pines infected and likely to bccom e infected 11 Inoculations of Cronartium ribicola on pines 12 Species of Ribes that have been infected naturally 14 Inoculations of Cronartium ribicola on Ribes 10 Susceptibili
RMRGBNCW–. Bulletin of the U.S. Department of Agriculture. Agriculture; Agriculture. Bui. 957, U. S. Dept. of Agriculture. Plate IV.. Leaves of Ribes Infected With Cronartium ribicola. Showing Different Types of Attack. Fig. 1.—Lower surface of a leaf of Ribes aureum infected by Cronartium ribicola. Note the charac- teristic isolated infected areas, with the abundant uredinia closely crowded together. Fig. 2.—A Ribes bud with a single leaf which Ijears normal uredinia. This leaf is relatively old, being stunted in growth by adverse conditions which have held it stationary for several weeks. Fig. 3— Low
RMRE5BBY–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. JULY AUGUST Figure 21.A successful suction trapping of basidiospores; and the corresponding weather data in Beaver Mountain plot 1966. trapped, but also visual observations indicated that basidiospore production had seldom occurred. Low temperatures prevent any appreciable cast at night during radiation dew periods even though relative humidity near comandra commonly reaches 100 per- cent for 4 to 6 hours. Moisture from thundershowers usually does not last long enoug
RMRE5BD9–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. 15 30 JUNE Figure 16.—Phenology of C. comandrae and lodgepole pine at four elevations of simi- lar aspect in Wasatch National Forest in 1965. The bars represent presence of spores of various stages: aecial, pycnial, uredinial, and tehal. Relative frequency and duration of sporulation are indicated by vertical and horizontal extent of the bar, as in figure 15. Growth of pine in terms of branch shoot length is shown by the curves; comandra was absent at the two higher e
![. [Bulletins on forest pathology : from Bulletin U.S.D.A., Washington, D.C., 1913-1925]. Trees; Plant diseases. WHITE-PINE BLISTER RUST IN WESTERN EUROPE. 21 trol which they have applied to small groups or isolated ornamental specimens. Strenuous efforts to control the blister rust wherever it occurs are not made in Europe because the tree lacks the commercial status necessary to warrant such action. No European country has carried out a definite scheme of study for the control of Cronartium ribicola covering a number of years. The work done in the past has been conducted by individual initia- Stock Photo](https://c8.alamy.com/comp/RG8953/bulletins-on-forest-pathology-from-bulletin-usda-washington-dc-1913-1925-trees-plant-diseases-white-pine-blister-rust-in-western-europe-21-trol-which-they-have-applied-to-small-groups-or-isolated-ornamental-specimens-strenuous-efforts-to-control-the-blister-rust-wherever-it-occurs-are-not-made-in-europe-because-the-tree-lacks-the-commercial-status-necessary-to-warrant-such-action-no-european-country-has-carried-out-a-definite-scheme-of-study-for-the-control-of-cronartium-ribicola-covering-a-number-of-years-the-work-done-in-the-past-has-been-conducted-by-individual-initia-RG8953.jpg ". [Bulletins on forest pathology : from Bulletin U.S.D.A., Washington, D.C., 1913-1925]. Trees; Plant diseases. WHITE-PINE BLISTER RUST IN WESTERN EUROPE. 21 trol which they have applied to small groups or isolated ornamental specimens. Strenuous efforts to control the blister rust wherever it occurs are not made in Europe because the tree lacks the commercial status necessary to warrant such action. No European country has carried out a definite scheme of study for the control of Cronartium ribicola covering a number of years. The work done in the past has been conducted by individual initia- Stock Photo")
RMRG8953–. [Bulletins on forest pathology : from Bulletin U.S.D.A., Washington, D.C., 1913-1925]. Trees; Plant diseases. WHITE-PINE BLISTER RUST IN WESTERN EUROPE. 21 trol which they have applied to small groups or isolated ornamental specimens. Strenuous efforts to control the blister rust wherever it occurs are not made in Europe because the tree lacks the commercial status necessary to warrant such action. No European country has carried out a definite scheme of study for the control of Cronartium ribicola covering a number of years. The work done in the past has been conducted by individual initia-
RMREF646–. Comparative morphology of Fungi. Fungi. Fig. 371.—1. Gymnosporangium clavariaeforme. Section of a pycnium on leaf of Crataegus ( X 345). 2. Phragmidium violaceum. Pycnium on Rubus with ruptured cuticle (X440). 3. Cronartium ribicola portion of pycnium (X 1,160). P, paraphyses; Ep, epidermis; C, cuticle. (After Blackman, 1904, and Colley, 1918.) by a septum and which then falls off. The other remains behind in the basal cell and divides repeatedly, forming many successive spores. The periphery of the whole sorus is surrounded by a ring of periphyses (in systematic works often called paraphyse
RMRM8MHF–. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). New York Agricultural Experiment Station. 241 The two affected trees belonged to a lot of eight culls which had been left standing while the more desirable trees in the block had been dug and sold. Probably, they were imported trees although the owner is unable to furnish definite information on this point.. l Seneca .Ca-stle 1 [(re*eva «> 2 ft ft » Map 1.—Distribution of Cronartium ribicola at Geneva in 1912 and 1913. o = Ribes infection in 1912. * = Pine and Ribes infection in 1913. x = Experiment Stat
RMRE5BET–. Cronartium comandrae in the Rocky Mountain States. Cronartium comandrae Rocky Mountains Region; Fungi Rocky Mountains Region. 0 10 20 30 40 50 60 70 TIME IN HOURS Figure 8.Germination response of teliospores to several temperatures. Each curve rep- resents the cumulative mean from 10 telia.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Krebill, R. G. (Richard G. ), 1936-. Ogden, Utah : Intermountain Forest and Range E
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