E D I N B U R G H J O U R N A L O F B O T A N Y 64 (2): 225–251 (2007) E 225 Trustees of the Royal Botanic Garden Edinburgh (2007) doi:10.1017/S0960428607000923 NEW RECORDS OF ANGIOSPERMS AND PTERIDOPHYTES IN THE FLORA OF LAOS M . N E W M A N 1, P . T H O M A S 1, S O U L I V A N H L A N O R S A V A N H 2, S O U N T H O N E K E T P H A N H 3, B O U A K H A Y K H O N E S V E N G S U K S A 2 & V I C H I T H L A M X A Y 2 New records in the Flora of Laos are presented, along with a short history of botanical collection in the country. The records are given in two lists, one relating to the Flore du Cambodge, du Laos et du Viêtnam and the other relating to the older Flore générale de l’Indochine. Keywords. Angiosperms, Laos, new records, pteridophytes. I NTRODUCTION Laos is a landlocked, tropical country of some 236,800 km2, larger than its smallest neighbour, Cambodia, but smaller than its four other neighbours, Burma, China, Thailand and Vietnam. It is a land of mountains and rivers divided from Vietnam by the Annamite Mountains and from Thailand by the River Mekong. The lowest land is at 70 m above sea level while Phou Bia rises to 2817 m. The climate of Laos is determined mainly by the monsoon and consists of a rainy season from May to November and a dry season from December to April. The north of the country, which is generally at higher altitude, has lower temperatures and occasional, mild frosts. The flora of Laos is one of the least known in Asia, though it was revised in the Flore générale de l’Indochine (Lecomte, 1907–1950) and is being revised again in the Flore du Cambodge, du Laos et du Viêtnam (Aubréville, 1960–present). The great majority of specimens cited in these floras are from Vietnam where botanical collecting has always been more intensive than in Laos. Our knowledge of the floras of Thailand and Vietnam, each of which has in excess of 10,000 species, allows us to estimate that some 8000–9000 species may occur naturally in Laos. There is no list of the names of these species, however. Only about 2000 species are cited as occurring in Laos in the Floras referred to above. This discrepancy can be explained by examining the history of botanical exploration in Laos. 1 Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh EH3 5LR, UK. E-mail for correspondence: m.newman@rbge.ac.uk 2 Department of Biology, Faculty of Science, National University of Laos. 3 Forestry Research Centre, National Agriculture and Forestry Research Institute, Laos. 226 M. NEWMAN ET AL. B OTANICAL C OLLECTION IN L AOS The first botanical collectors in Laos were all French. Clovis Thorel was the first to make a significant contribution, collecting along the Mekong in southern and central Laos from 1866 to 1868. He was followed in the 1870s by Jules Harmand who also worked mainly in the south. These pioneers were followed by Henri D’Orléans (1892, in northern Laos), Clément Dupuy (1900, around Louangphrabang) and Jean-Baptiste Counillon (1909, along the Mekong). The most prolific collector in the 20th century was Eugène Poilane, who worked in various provinces of Laos from the 1920s to 1940s. At the same time Camille Joseph Spire was collecting in Xiengkhouang. More detail about the flora and collectors in Cambodia, Laos and Vietnam may be found in the ‘tome préliminaire’ to the Flore générale de l’Indochine (Gagnepain, 1943). Historical events all but prevented botanical work in Laos between World War II and the 1990s though some collections were made by Jules Vidal and Pierre Tixier in the 1950s and early 1960s. Taking all these Laotian collections together, it is possible to calculate that roughly three specimens per 100 km2 have been collected in Laos. Table 1 compares this figure with those from neighbouring countries and the United Kingdom. The majority of herbarium specimens collected in Laos are deposited in the herbarium at the Muséum national d’Histoire naturelle in Paris (P). Other European herbaria such as the Royal Botanic Garden Edinburgh (E), the Royal Botanic Gardens, Kew (K) and the Nationaal Herbarium Nederland, Leiden University Branch (L) also hold significant collections either from Laos or from neighbouring countries. To date there is no national herbarium in Laos itself though there are four small herbaria in and near Vientiane at the Faculty of Science and Faculty of Forestry, National University of Laos (NUoL), the Forest Research Centre, National Agriculture and Forestry Research Institute and the Traditional Medicine Institute, Ministry of Health. Despite the limited herbarium collections from Laos, the flora has been described once, in the Flore générale de l’Indochine, and is being revised in the Flore du Cambodge, du Laos et du Viêtnam. While these long-term projects go on, other works have been published which contribute to the Flora or derive from it. Not long after the completion of the Flore générale de l’Indochine, Vidal, who lived in Laos in the T A B L E 1. Collection density of herbarium specimens (D. J. Middleton, 2003 & pers. comm.) Country No. of specimens per 100 km2 Cambodia Laos Vietnam Thailand United Kingdom 4 3 14 50 1700 NEW RECORDS IN THE FLORA OF LAOS 227 1950s, published his list of the vernacular names of useful plants in Laos (Vidal, 1962), and this has remained a critical source of information on plant names ever since. Vidal’s List, as it is known, includes only useful plants; it was never intended to cover the whole flora. Furthermore, as taxonomy progresses, changes in names of plants and species concepts mean this list is no longer as reliable as it was. The new Flora being published at the Muséum national d’Histoire naturelle in Paris, the Flore du Cambodge, du Laos et du Viêtnam, has now reached 32 fascicles, treating 88 families, and this is the best resource for finding the correct names of plants in Laos. For the remaining families, the Flore générale de l’Indochine is still the best place to look, but what is needed, until the Flore du Cambodge, du Laos et du Viêtnam is completed, is a list of the plant species of the country. The first attempt to provide this was Callaghan’s Plant names used in Lao PDR (Callaghan, 2001). In this book, which is unfortunately difficult to find, all plant names known to have been used in Laos are listed along with synonyms, Lao names and comments. The list also includes cultivated and introduced plants. Another useful reference is the Selected resources for plant identification in Lao PDR (Newman et al., 2006) which directs readers to the most suitable reference for identifying genera and species of plants in each family. During the last decade botanical research has gradually become more active in Laos. National institutes such as NUoL and the Forest Research Centre have undertaken biodiversity surveys in National Protected Areas (NPAs) and in other sites of special interest, such as Nam Et–Phou Loei and Phou Khao Khouay NPAs and the Siphandone wetlands in Champasak. Some of these surveys have included collection of specimens, which are deposited in the Laotian herbaria mentioned above. There has also been an increase in cooperation with foreign botanists and their institutions. Dr Bouakhaykhone Svengsuksa from NUoL has worked with French botanists to produce accounts of families for the Flore du Cambodge, du Laos et du Viêtnam, and Laotian botanists have contributed to several broadly based forestry projects with a taxonomic component, such as the DANIDA-funded Lao Tree Seed Project (LTSP) that formed part of the regional Indochina Tree Seed Project. A significant output of this project was the manual Forests and Trees of the Central Highlands of Xieng Khouang (Lehmann et al., 2003). Specimens have been collected during a project on fallow lands in Louangphrabang Province funded by the Institut de Recherche pour le Développement. These are lodged in Laos with some duplicates at E and L (A. de Rouw, pers. comm.). There are projects still running which are gathering herbarium specimens, such as BIOTIK, an EU-funded project concentrating on large tree species, and a number of MSc and PhD projects based at Uppsala University. Other projects have focused on taxonomic groups of plants, for example the Darwin Initiative project Sustainable Use of Rattans of Lao PDR with funding from the UK (www.darwin.gov.uk/projects/details/6046.html). During this project the taxonomy and distribution of all Laotian rattan species were reviewed, several new 228 M. NEWMAN ET AL. taxa were described and an identification manual was published (Evans et al., 2001). Many specimens were collected and lodged either at the Forest Research Centre herbarium near Vientiane or at the Royal Botanic Gardens, Kew. Recently a number of projects based at NUoL have focused on botanical research of the orchids. One output from these projects has been the publication of the first Field Guide to the Orchids of Lao PDR (Svengsuksa & Lamxay, 2005). In 2003 another Darwin Initiative project started, called Taxonomic Training in a Neglected Biodiversity Hotspot in Lao PDR (www.darwin.gov.uk/projects/details/ 13007.html). It concentrated on training Laotian botanists, researchers and Protected Area staff in the scientific identification of all vascular plant species. During this project, three expeditions were carried out in Nakai Nam Theun National Protected Area, Khammouan Province, resulting in more than 1500 vascular plant collections which are deposited in three herbaria in Laos as well as E, L and P. The largest output of this Darwin Initiative project is A checklist of the vascular plants of Lao PDR (Newman et al., 2007), which incorporates data from historical specimen collections in European herbaria as well as more recent botanical field work, especially in Khammouan Province. Currently the checklist holds records of almost 4900 species, based on herbarium specimens and reliable literature sources. The data set from which this checklist is derived has been installed at NUoL and the Forest Research Centre so that Laotian botanists can use it and add to it, gradually working towards a revised checklist. Whilst compiling this data set, we have come across a significant number of species names which are not known from Laos according to the two floras cited above. These we take to be new records. Some of these new records belong to families that have already been revised in the Flore du Cambodge, du Laos et du Viêtnam. Since these families will not be revised again for a long time it is important to publish new records so that scientists, conservationists and others know of additions to the vascular plant flora of Laos. The list that follows is of new angiosperm and pteridophyte records, except for the Orchidaceae which will be reported elsewhere. The conifers are treated by Thomas et al. (2007). We have divided the names into two parts. Part One includes species in families already treated in the Flore du Cambodge, du Laos et du Viêtnam. It is possible to be fairly confident that these are new records since accounts in the Flore are no more than 47 years old and cite all specimens known from Laos at the time of writing. Part Two includes species in families that have been revised only in the Flore générale de l’Indochine. The first fascicle of this flora was published in 1907, when botanical exploration in Laos had hardly begun. It is impossible, therefore, to be confident that these are new records, though we still believe that this list will be useful. There are many species, even common, widespread ones, which had simply never been collected in Laos at the time of the Flore générale de l’Indochine. For NEW RECORDS IN THE FLORA OF LAOS 229 example, Adiantum zollingeri Mett. ex Kuhn is found commonly from the Himalayas to western Malesia yet no specimens were seen by Tardieu and Christensen when they revised this genus in 1940 (Tardieu & Christensen, 1940). For each species listed below, the province, district (when known), one herbarium specimen per province and its herbarium location are given. Herbarium codes follow Index Herbariorum (Holmgren & Holmgren, 1998 onwards) except for the herbaria in Laos that are not currently registered with Index Herbariorum. The code ‘NUoL’ refers to the herbarium at the Faculty of Science in the National University of Laos, Vientiane, Laos. Family delimitation is in a period of rapid change and the placement of certain genera is controversial. In Part One we have followed the family delimitations used in the Flore du Cambodge, du Laos et du Viêtnam and in Part Two we have used the Angiosperm Phylogeny Group classification (Angiosperm Phylogeny Group, 2003). Likewise, there is no standard transliteration of Laotian letters into Roman so the names of provinces may be found in other spellings elsewhere. The system used here is the one most commonly seen in Laos though it does not represent the sounds of the Laotian language well, particularly to English speakers, since it is based on French phonetics. A CKNOWLEDGEMENTS We are most grateful to those who have helped us in the preparation of this paper, in particular the directors and staff of K, L and P who have generously contributed data on Laotian collections. The following have kindly determined large numbers of specimens for us: Frits Adema (L) – Leguminosae; C. C. Berg (L) – Moraceae; Robert Faden (US) – Commelinaceae; Paul Keßler (L) – Annonaceae; David Middleton (E) – Apocynaceae, Gesneriaceae; Colin Pendry (E) – Polygalaceae; Christian Puff (W) – Rubiaceae; Colin Ridsdale (L) – Rubiaceae; Willem de Wilde and Brigitte de Wilde-Duyfjes (L) – Cucurbitaceae. Others, too many to name, have determined smaller numbers of specimens. This work was funded as part of Darwin Initiative project 163/13/007. R EFERENCES A N GI O SP E RM P H YLO GE NY G RO UP (2003). An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Bot. J. Linn. Soc. 141: 399–436. A U B R É V I L L E , A . (1960–present). Flore du Cambodge, du Laos et du Viêtnam. Paris: Muséum national d’Histoire naturelle. C A L L A G H A N , M. (2001). Plant names used in Lao PDR. Vientiane (paperback book and database). E VAN S , T. D . , K H AM PH O NE S E N G DA L A , O U L AT HO NG V. V I E NG K HA M & B AN XA T HA MM AV ON G ( 2001). A Field Guide to the Rattans of Lao PDR. English edition. Royal Botanic Gardens, Kew. G A GN E P AI N , F. (1943). Tome préliminaire (Preliminary volume). In: L E C O M T E , H . (1907– 1950), Flore générale de l’Indochine. Paris: Muséum national d’Histoire naturelle. 230 M. NEWMAN ET AL. H OLM G REN , P. K . & H O L MG R E N , N . H . (1998 onwards, continuously updated). Index Herbariorum. New York Botanical Garden. http://sciweb.nybg.org/science2/ IndexHerbariorum.asp (accessed 15 March 2007). L EC OMT E , H . (1907–1950). Flore générale de l’Indochine. Paris: Muséum national d’Histoire naturelle. L E H M A N N , L. , G REI J MA NS , M. & S H E NM AN , D . (2003). Forests and Trees of the Central Highlands of Xieng Khouang, Lao PDR. Vientiane: DANIDA. M I D D L E T O N , D . J . (2003). Progress on the Flora of Thailand. Telopea 10(1): 33–42. N EWM AN , M . F. , B O U AK HA YK H ON E S VE N GS UK A & V I C H IT H L AM XA Y (2006). Selected resources for plant identification in Lao PDR. Royal Botanic Garden Edinburgh. N EWM AN , M . F. , S O UN T H ON E K ETP HA NH , B OU AK HA YK H ON E S VE N GS UK A , T H OM AS , P. , V I C H IT H L AM XA Y & A R MST RON G , K . (2007). A checklist of the vascular plants of Lao PDR. Royal Botanic Garden Edinburgh. S VE N G SU K A B OU A KH AY KH ON E & V I C HI T H L AM XA Y (2005). Field Guide to the Orchids of Lao PDR. Vientiane: National University of Lao PDR. T A RD IE U , M-L . & C H R I S T E N S E N , C . (1940). In: L E C O M T E , H . , Flore générale de l’Indochine 7(7): 179–187. T H OM AS , P. , K H AM P HO NE S E N G DA L A , V I C H IT H L AM XA Y & E AN GH O UR T K H OU (2007). New records of conifers in Cambodia and Laos. Edinburgh J. Bot. 64(1): 37–44. V I D AL , J . E. (1962). Noms vernaculaires de plantes en usage au Laos. Edition 2. Paris: Ecole Française d’Etrême-Orient. Received 29 January 2007; accepted for publication 27 April 2007 P ART O NE: N EW R ECORDS IN F AMILIES R EVISED FOR C A M B O D G E , D U L A O S E T D U V I Ê T N A M THE F LORE P ART T WO: N EW R ECORDS IN F AMILIES Y ET TO BE R EVISED F L O R E D U C A M B O D G E , D U L A O S E T D U V I Ê T N A M DU FOR THE KHAMMOUAN, Nakai Distr., Newman et al. LAO 466 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 1220 (P) Flacourtiaceae Flacourtia rukam Zoll. & Moritzi Gentianaceae Gentiana khammouanensis Hul LAO 591 (E) LAO 910 (E) Neoachmandra indica (Lour.) W.J.de Wilde & Duyfjes Trichosanthes dunniana H.Lév. LAO 959 (E) LAO 491 (E) LAO 600 (E) LOUANGPHRABANG, de Rouw 332 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. KHAMMOUAN, Nakai Distr., Newman et al. KHAMMOUAN, Nakai Distr., Newman et al. LOUANGPHRABANG, de Rouw 553 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. KHAMMOUAN, Nakai Distr., Newman et al. Cucurbitaceae Diplocyclos palmatus (L.) C.Jeffrey Indomelothria blumei (Ser.) W.J.de Wilde & Duyfjes Momordica charantia L. Mukia javanica (Miq.) C.Jeffrey KHAMMOUAN, Nakai Distr., Newman et al. LAO 522 (E) Cornaceae Mastixia pentandra Blume subsp. cambodiana (Pierre) K.M.Matthew V I Ê T N A M LOUANGPHRABANG, de Rouw 530 (CMU) ET DU Combretaceae Combretum punctatum Blume LAOS CHAMPASAK, Khong Distr., Maxwell 98-189 (CMU) DU KHAMMOUAN, Nakai Distr., Newman et al. LAO 387 (E) C AMBODGE, Caryophyllaceae Polycarpon prostratum (Forssk.) Asch. & Schweinf. DU Balanophoraceae Balanophora fungosa subsp. indica (Arn.) B.Hansen F LORE LOUANGPHRABANG, de Rouw 498 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-439 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 60 (E) FOR THE Anacardiaceae Mangifera caloneura Kurz Mangifera camptosperma Pierre Pentaspadon poilanei (Evrard & Tardieu) P.H.Hô F AMILIES R EVISED Province, district, voucher specimen and herbarium location IN Family, genus and species P ART O NE: N EW R ECORDS NEW RECORDS IN THE FLORA OF LAOS 231 KHAMMOUAN, Nakai Distr., Newman et al. LAO 468 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 592 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1275 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 68 (E) BOLIKHAMXAI, Khamkheuth Distr., Newman et al. LAO 1329 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 1446 (E) LOUANGPHRABANG, de Rouw 636 (CMU) Myrsinaceae Ardisia crenata Sims subsp. crenata Ardisia gigantifolia Stapf Ardisia graciliflora Pit. Ardisia quinquegona Blume Ardisia symplocifolia (C.Chen) K.Larsen & C.M.Hu Rapanea neriifolia (Siebold & Zucc.) Merr. Nyctaginaceae Mirabilis jalapa L. Cajanus goensis Dalzell Centrosema pubescens Benth. Dalbergia tonkinensis Prain Desmodium biarticulatum (L.) Benth. Millettia boniana Gagnep. Millettia pachyloba Drake Pueraria stricta Kurz Shuteria vestita Wight & Arn. Stylosanthes sundaica Taub. Uraria campanulata Wall. CHAMPASAK, Phonthong Distr., Munzinger 291 (P) HOUAPHAN, Viengthong Distr., Homsombath & Newman 1446 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 320 (E) CHAMPASAK, Khong Distr., Maxwell 97-1156 (L) LOUANGPHRABANG, de Rouw 108 (CMU) CHAMPASAK, Khong Distr., Maxwell 99-168 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 824 (E) LOUANGPHRABANG, de Rouw 258 (CMU) CHAMPASAK, Phonthong Distr., Munzinger 166 (P) BOLIKHAMXAI, Khamkeut Distr., Svengsuksa BT-88 (L) CHAMPASAK, Khong Distr., Maxwell 98-1005 (L) KHAMMOUAN, Nakai Distr., Svengsuksa BT-15 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 153 (E) LOUANGPHRABANG, de Rouw 380 (CMU) LOUANGPHRABANG, de Rouw 661 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-111 (L) LOUANGPHRABANG, de Rouw 346 (CMU) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1212 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1451 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1431 (E) Hamamelidaceae Eustigma balansae Oliv. Exbucklandia populnea (R.Br. ex Griff.) R.W.Br. Rhodoleia championii Hook.f. Leguminosae Adenanthera pavonina L. Apios carnea (Wall.) Baker Archidendron poilanei (Kosterm.) I.C.Nielsen Bauhinia glauca (Benth.) Benth. Caesalpinia enneaphylla Roxb. Caesalpinia furfuracea (Prain) Hattink Province, district, voucher specimen and herbarium location Family, genus and species 232 M. NEWMAN ET AL. Province, district, voucher specimen and herbarium location LOUANGPHRABANG, de Rouw 306 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 708 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 660 (E) CHAMPASAK, Khong Distr., Maxwell 98-982 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 794 (E) CHAMPASAK, Phonthong Distr., Munzinger 275 (P) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1256 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1480 (E) LOUANGPHRABANG, de Rouw 697 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-987 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-63 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-1037 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-201 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1154 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 651 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1453 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 846 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 731 (E) Family, genus and species Passifloraceae Adenia heterophylla (Blume) Koord. Podostemaceae Hydrobryum griffithii (Griff.) Tul. Polygalaceae Epirixanthes elongata Blume Polygala brachystachya Blume Salomonia thailandica H.Koyama Proteaceae Heliciopsis terminalis (Kurz) Sleumer Rosaceae Prunus phaeostica Maxim. Rhaphiolepis brevipetiolata J.E.Vidal Rubus blepharoneurus Cardot Sapotaceae Chrysophyllum cainito L. Palaquium poilanei Lecomte Scrophulariaceae Limnophila erecta Benth. Mazus pumilus (Burm.f.) Steenis Smilacaceae Smilax extensa Wall. Symplocaceae Symplocos adenophylla Wall. ex G.Don Symplocos anomala Brand Symplocos atriolivacea Merr. & Chun Umbelliferae Seseli yunnanense Franch. NEW RECORDS IN THE FLORA OF LAOS 233 C AMBODGE, DU L AOS LOUANGPHRABANG, Louangphrabang Distr., de Rouw 492 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-544 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 30 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 234 (E) Amaryllidaceae Crinum wattii Baker Ancistrocladaceae Ancistrocladus cochinchinensis Gagnep. Annonaceae Alphonsea gaudichaudiana (Baill.) Finet & Gagnep. KHAMMOUAN, Nakai Distr., Newman et al. LAO 866 (E) CHAMPASAK, Khong Distr., Maxwell 97-1144 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 118 (CMU) Amaranthaceae Allmania nodiflora (L.) R.Br. Adiantaceae Adiantum diaphanum Blume Adiantum zollingeri Mett. ex Kuhn LOUANGPHRABANG, Louangphrabang Distr., de Rouw 713 (CMU) DU Actinidiaceae Saurauia roxburghii Wall. F LORE LOUANGPHRABANG, de Rouw 256 (CMU) LOUANGPHRABANG, de Rouw 361 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-148 (CMU) LOUANGPHRABANG, de Rouw 485 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-128 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-172 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1105 (CMU) LOUANGPHRABANG, de Rouw 487 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 353 (E) CHAMPASAK, Khong Distr., Maxwell 97-1092 (CMU) FOR THE Acanthaceae Andrographis laxiflora Lindau Asystasia salicifolia Craib Hygrophila indica Nees Justicia procumbens L. Nelsonia canescens Spreng. Pseuderanthemum couderci Benoist Pseuderanthemum latifolium (Vahl) B.Hansen Sericocalyx quadrifarius (Nees) Bremek. Thunbergia grandiflora Roxb. Thunbergia similis Craib R EVISED V I Ê T N A M TO BE ET DU F AMILIES Y ET Province, district, voucher specimen and herbarium location IN Family, genus and species P ART T WO: N EW R ECORDS 234 M. NEWMAN ET AL. CHAMPASAK, Phonthong Distr., Munzinger 251 (P) CHAMPASAK, Khong Distr., Maxwell 98-916 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-471 (CMU) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1299 (E) CHAMPASAK, Khong Distr., Maxwell 98-1054 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-167 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1106 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 149 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 690 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1150 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-45 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1199 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 76 (CMU) Aristolochiaceae Aristolochia pothieri Pierre ex Lecomte Aristolochia tagala Cham. Aspleniaceae Asplenium affine Sw. Begoniaceae Begonia yunnanensis H.Lév. Boraginaceae Coldenia procumbens L. Cordia dichotoma G.Forst. Cordia mhaya Kerr CHAMPASAK, Khong Distr., Maxwell 98-1064 (CMU) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1455 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 509 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1181 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1112 (CMU) KHAMMOUAN, Newman et al. LAO 544 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 508 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1078 (CMU) CHAMPASAK, Khong Distr., Maxwell 1138 (CMU) Province, district, voucher specimen and herbarium location Araceae Alocasia indica (Lour.) Spach Alocasia odora (Lindl.) K.Koch Amorphophallus koratensis Gagnep. Arisaema roxburghii Kunth Colocasia fallax Schott Cryptocoryne tonkinensis Gagnep. Tylophora indica (Burm.f.) Merr. Vincetoxicopsis harmandii Costantin Apocynaceae Heterostemma grandiflorum Costantin Hoya vaccinioides Hook.f. Hoya verticillata var. citrina (Ridl.) Veldkamp Raphistemma hooperianum Decne. Raphistemma pulchellum Wall. Tylophora flexuosa R.Br. Family, genus and species NEW RECORDS IN THE FLORA OF LAOS 235 Province, district, voucher specimen and herbarium location KHAMMOUAN, Nakai Distr., Newman et al. LAO 692 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 389 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 63 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 511 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 487 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 181 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 518 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 53 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 519 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 325 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 405 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 238 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 343 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 17 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 782 (E) CHAMPASAK, Khong Distr., Maxwell 98-416 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 646 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 46 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 543 (E) CHAMPASAK, Khong Distr., Maxwell 98-467 (CMU) Family, genus and species Burmanniaceae Burmannia chinensis Gand. Burmannia wallichii (Miers) Hook.f. Burseraceae Canarium tramdenum Chan Din Dai & Yakovlev Garuga floribunda Decne. Cannabaceae Celtis tetrandra Roxb. Trema tomentosa (Roxb.) H.Hara Capparaceae Capparis echinocarpa Pierre ex Gagnep. Capparis pyrifolia Lam. Capparis zeylanica L. Stixis parviflora Baill. Cardiopteridaceae Cardiopteris quinqueloba Hassk. Gonocaryum lobbianum (Miers) Kurz Celastraceae Euonymus indicus B.Heyne ex Wall. Gymnosporia chevalieri Tardieu Hippocratea dinhensis Pierre Salacia chinensis L. Salacia rostrata Pierre Salacia verrucosa Wight Chloranthaceae Sarcandra glabra (Thunb.) Nakai Cleomaceae Cleome gynandra L. 236 M. NEWMAN ET AL. Cyperaceae Cyperus imbricatus Retz. Cyperus laxus Lam. Cyperus laxus var. macrostachyus (Boeck.) Karth. Cyperus michelianus (L.) Delile subsp. pygmaeus (Rottb.) Asch. & Graebn. Cyperus rotundus L. Lepistemon binectariferum Kuntze Operculina turpethum (L.) Silva Manso Convolvulaceae Aniseia martinicensis (Jacq.) Joisy Convolvulus alsinoides L. Erycibe subspicata Wall. ex G.Don Ipomoea quamoclit L. Jacquemontia paniculata (Burm.f.) Hallier f. 549 (CMU) 222 (CMU) 551 (CMU) 551 (CMU) 537 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 190 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-516 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 126 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-191 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-915 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 187 (NUoL) CHAMPASAK, Khong Distr., Maxwell 98-1015 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-1038 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-944 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw CHAMPASAK, Khong Distr., Maxwell 98-65 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw LOUANGPHRABANG, Louangphrabang Distr., de Rouw CHAMPASAK, Khong Distr., Maxwell 98-64 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw Compositae Ainsliaea latifolia (D.Don) Sch.Bip. Blumea membranacea DC. Blumea mollis (D.Don) Merr. Blumea napifolia DC. Camchaya eberhardtii (Gagnep.) Kitam. Spilanthes paniculata Wall. ex DC. Thorelia montana Gagnep. 454 (CMU) 442 (CMU) 139 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw LOUANGPHRABANG, Louangphrabang Distr., de Rouw LOUANGPHRABANG, Louangphrabang Distr., de Rouw CHAMPASAK, Khong Distr., Maxwell 98-47 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw CHAMPASAK, Khong Distr., Maxwell 98-185 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1090 (L) Dictyospermum ovatum Hassk. Murdannia macrocarpa D.Y.Hong Province, district, voucher specimen and herbarium location CHAMPASAK, Khong Distr., Maxwell 98-1046 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 362 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 531 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 706 (E) Commelinaceae Commelina diffusa Burm.f. Family, genus and species NEW RECORDS IN THE FLORA OF LAOS 237 CHAMPASAK, Khong Distr., Maxwell 98-957 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-888 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-972 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 296 (E) KHAMMOUAN, Nakai Distr., Svengsuksa BT-56 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 867 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 559 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 619 (E) CHAMPASAK, Khong Distr., Maxwell 98-458 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 820 (E) Daphniphyllaceae Daphniphyllum pentandra Hayata Dennstaedtiaceae Lindsaea commixta Tagawa Microlepia herbacea Ching & C.Chr. ex Tardieu & Ching Dichapetalaceae Dichapetalum longipetalum (Turcz.) Engl. Dilleniaceae Tetracera loureirii Craib Tetracera sarmentosa (L.) Vahl Dryopteridaceae Bolbitis appendiculata (Willd.) K.Iwats. Bolbitis hookeriana K.Iwats. Diplazium petelotii Tardieu Tectaria brachiata (Zoll. & Moritzi) C.V.Morton Tectaria herpetocaulos Holttum Tectaria impressa (Fée) Holttum Dioscorea rockii Prain & Burkill KHAMMOUAN, Nakai Distr., Newman et al. LAO 369 (E) CHAMPASAK, Khong Distr., Maxwell 97-1151 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 688 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 191 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 565 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1165 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1075 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 563 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 560 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 538B (E) Eleocharis retroflexa (Poir.) Urb. subsp. chaetaria (Roem. & Schult.) T.Koyama Fimbristylis obtusata (C.B.Clarke) Ridl. Scleria lithosperma subsp. linearis (Benth.) T.Koyama Scleria psilorrhiza C.B.Clarke Scleria purpurascens Steud. Dioscoreaceae Dioscorea arachidna Prain & Burkill Province, district, voucher specimen and herbarium location Family, genus and species 238 M. NEWMAN ET AL. KHAMMOUAN, Nakai Distr., Newman et al. LAO 66 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 364 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-993 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-154 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 396 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 71 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1425 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 700 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 887 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 532 (E) CHAMPASAK, Khong Distr., Maxwell 98-940 (CMU) Ebenaceae Diospyros apiculata Hiern Diospyros dasyphylla Kurz Diospyros ehretioides Wall. Diospyros filipendula Pierre Diospyros rubra Lecomte Elaeocarpaceae Elaeocarpus petiolatus (Jack) Wall. Ericaceae Enkianthus quinqueflorus Lour. Eriocaulaceae Eriocaulon echinulatum Mart. Eriocaulon escape B.Hansen Eriocaulon nepalense var. luzulaefolium (Mart.) A.Prajaksood & J.Parn. Erythroxylaceae Erythroxylum cambodianum Pierre XAIGNABOURI, Paklay Distr., Maxwell 99-289 (L) CHAMPASAK, Khong Distr., Maxwell 98-996 (L) CHAMPASAK, Phonthong Distr., Munzinger 92 (P) CHAMPASAK, Khong Distr., Maxwell 98-467 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 574 (NUoL) CHAMPASAK, Khong Distr., Maxwell 97-1174 (L) CHAMPASAK, Khong Distr., Maxwell 97-1178 (L) KHAMMOUAN, Thakhek Distr., Svengsuka BT-1 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 909 (E) Mallotus cuneatus Ridl. Sampantaea amentiflora (Airy Shaw) Airy Shaw Strophioblachia fimbricalyx Boerl. Fagaceae Castanopsis echinocarpa Miq. Euphorbiaceae Blachia poilanei Gagnep. Blachia siamensis Gagnep. Croton joufra Roxb. Euphorbia thymifolia L. Province, district, voucher specimen and herbarium location Family, genus and species NEW RECORDS IN THE FLORA OF LAOS 239 Setaria parviflora (Poir.) Kerguélen Panicum amoenum Balansa Panicum humile Nees ex Steud. Paspalum conjugatum P.J.Bergius Phragmites vallatoria (Pluk) Veldkamp Lophopogon intermedius A.Camus Microstegium vagans (Nees ex Steud.) A.Camus Ottochloa nodosa (Kunth) Dandy (CMU) (CMU) (CMU) (CMU) (CMU) (CMU) (CMU) (CMU) CHAMPASAK, Khong Distr., Maxwell 98-1018 (L) CHAMPASAK, Phonthong Distr., Munzinger 247 (P) Gesneriaceae Calcareoboea bonii (Pellegr.) B.L.Burtt Ornithoboea leptonema B.L.Burtt KHAMMOUAN, Nakai Distr., Newman et al. LAO 935 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 705 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 930 (E) CHAMPASAK, Khong Distr., Maxwell 98-873 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-980 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-204 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-890 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-489 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 359 CHAMPASAK, Khong Distr., Maxwell 98-198 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-928 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-174 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 436 CHAMPASAK, Khong Distr., Maxwell 98-141 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 593 CHAMPASAK, Khong Distr., Maxwell 98-1044 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 294 LOUANGPHRABANG, Louangphrabang Distr., de Rouw 198 LOUANGPHRABANG, Louangphrabang Distr., de Rouw 334 LOUANGPHRABANG, Louangphrabang Distr., de Rouw 197 CHAMPASAK, Khong Distr., Maxwell 98-142 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 592 CHAMPASAK, Khong Distr., Maxwell 98-929 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 432 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 586 (CMU) Lithocarpus elegans (Blume) Hatus. ex Soepadmo Lithocarpus polystachyus (A.DC.) Rehder Gramineae Andropogon chinensis (Nees) Merr. Arthraxon hispidus (Thunb.) Makino Arundinella bengalensis Druce Bothriochloa bladhii (Retz.) S.T.Blake Coelachne perpusilla (Nees ex Steud.) Thwaites Digitaria bicornis (L.) Roem. & Schult. Digitaria siamensis Henrard Echinochloa colona (L.) Link Eragrostis japonica (Thunb.) Trin. Eragrostis pilosa P.Beauv. Eremochloa ciliaris (L.) Merr. Leptochloa chinensis (L.) Nees Province, district, voucher specimen and herbarium location Family, genus and species 240 M. NEWMAN ET AL. Province, district, voucher specimen and herbarium location KHAMMOUAN, Nakai Distr., Newman et al. LAO 533 (E) CHAMPASAK, Khong Distr., Maxwell 98-862 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-135 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-197 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 591 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-546 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 598 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-500 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 952 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 669 (E) CHAMPASAK, Khong Distr., Maxwell 98-173 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 669 (E) CHAMPASAK, Khong Distr., Maxwell 98-1035 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 265 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-436 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 73 (E) BOLIKHAMXAI, Khamkheuth Distr., Newman et al. LAO 1321 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 370 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 671 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1305 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1424 (E) Family, genus and species Sphaerocaryum malaccense (Trin.) Pilg. Sporobolus harmandii Henrard Thyrsostachys oliveri Gamble Urochloa setigera (Retz.) Stapf Zoysia matrella (L.) Merr. Guttiferae Garcinia cowa Roxb. Garcinia merguensis Wight Mammea siamensis T.Anderson Hydrocharitaceae Blyxa aubertii A.Rich. Blyxa japonica Maxim. ex Asch. & Gürke Hydrilla verticillata (L.f.) Royle Najas kingii Rendle Ottelia alismoides (L.) Pers. Hypericaceae Cratoxylum cochinchinense Blume Cratoxylum maingayi Dyer Hypericum japonicum Thunb. ex Murray Hypoxidaceae Curculigo conoc Gagnep. Curculigo latifolia Dryand. ex W.T.Aiton Icacinaceae Apodytes dimidiata E.Mey. ex Arn. Illiciaceae Illicium peninsulare A.C.Sm. Illicium verum Hook.f. NEW RECORDS IN THE FLORA OF LAOS 241 KHAMMOUAN, Nakai Distr., Newman et al. LAO 635 (E) Iteaceae Itea macrophylla Wall. CHAMPASAK, Khong Distr., Maxwell 98-966 (CMU) Lemnaceae Lemna perpusilla Torr. CHAMPASAK, Khong Distr., Maxwell 98-952 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 953 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 277 (E) Lecythidaceae Careya arborea Roxb. Lentibulariaceae Utricularia aurea Lour. KHAMMOUAN, Nakai Distr., Newman et al. LAO 179 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 890 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 281 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 126 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 124 (E) Lauraceae Cinnamomum tamala (Buch.-Ham.) T.Nees & C.H.Eberm. Litsea grandis Hook.f. Litsea semecarpifolia Hook.f. Persea odoratissima (Nees) Kosterm. Phoebe cathia (D.Don) Kosterm. Gomphostemma strobilinum Wall. Gomphostemma wallichii Prain CHAMPASAK, Phonthong Distr., Munzinger 87 (P) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 754 (CMU) CHAMPASAK, Phonthong Distr., Munzinger 243 (P) KHAMMOUAN, Nakai Distr., Newman et al. LAO 23 (E) CHAMPASAK, Khong Distr., Maxwell 98-906 (L) CHAMPASAK, Khong Distr., Maxwell 98-430 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 376 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 604 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1167 (CMU) BOLIKHAMXAI, Khamkheuth Distr., Newman et al. LAO 1363 (E) Irvingiaceae Irvingia malayana Oliv. Labiatae Clerodendrum cochinchinense Dop Clerodendrum disparifolium Blume Clerodendrum finetii Dop Congea chinensis Moldenke Glossocarya siamensis Craib Gmelina philippinesis Cham. Province, district, voucher specimen and herbarium location Family, genus and species 242 M. NEWMAN ET AL. KHAMMOUAN, Nakai Distr., Newman et al. LAO 954 (E) Lythraceae Rotala wallichii Koehne Microcos tomentosa Sm. Sida cordifolia L. Microcos paniculata L. Dombeya acutangula Cav. Firmiana colorata (Roxb.) R.Br. Grewia paniculata Roxb. Helicteres elongata Wall. Hibiscus furcatus Roxb. Kydia calycina Roxb. KHAMMOUAN, Nakai Distr., Newman et al. LAO 571 (E) CHAMPASAK, Khong Distr., Maxwell 98-531 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 734 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 580 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 782 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 257 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 729 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 337 (CMU) CHAMPASAK, Phonthong Distr., Munzinger 183 (P) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 160 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 480 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 277 (CMU) XIENGKHOANG, Muong Kham Distr., Newman et al. LAO 1127 (E) CHAMPASAK, Khong Distr., Maxwell 97-1187 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 421 (E) BOLIKHAMXAI, Khamkheuth Distr., Newman et al. LAO 1358 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 321 (CMU) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1476 (E) CHAMPASAK, Khong Distr., Maxwell 97-1098 (CMU) Loranthaceae Helixanthera cylindrica (Jack) Danser Macrosolen lowii (King) Tregn. Malvaceae Bombax ceiba L. Brownlowia emarginata Pierre Colona flagrocarpa (Brandis) Craib Commersonia bartramia (L.) Merr. Corchorus aestuans L. KHAMMOUAN, Nakai Distr., Newman et al. LAO 1001 (E) CHAMPASAK, Khong Distr., Maxwell 97-1072 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1060 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 693 (E) Utricularia bifida L. Loganiaceae Strychnos ignatii Bergius Strychnos kerrii A.W.Hill Province, district, voucher specimen and herbarium location Family, genus and species NEW RECORDS IN THE FLORA OF LAOS 243 KHAMMOUAN, Nakai Distr., Newman et al. LAO 819 (E) CHAMPASAK, Khong Distr., Maxwell 98-170 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 395 (E) CHAMPASAK, Khong Distr., Maxwell 98-1024 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 114 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-199 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-942 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 440 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 67 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 569 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 220 (E) CHAMPASAK, Khong Distr., Maxwell 98-537 (L) CHAMPASAK, Khong Distr., Maxwell 98-433 (L) CHAMPASAK, Khong Distr., Maxwell 98-534 (L) Sterculia balanghas L. Sterculia urens Roxb. Triumfetta bartramia L. Waltheria americana L. Marattiaceae Angiopteris evecta (G.Forst.) Hoffm. Marsileaceae Marsilea quadrifolia L. Melastomataceae Melastoma sanguineum Sims Osbeckia stellata var. rostrata (D.Don) C.Hansen Pseudodissochaeta septentrionalis (W.W.Sm.) M.P.Nayar Sonerila erecta Jack Meliaceae Aglaia pachyphylla Miq. Sandoricum koetjape (Burm.f.) Merr. Walsura pinnata Hassk. Walsura robusta Roxb. KHAMMOUAN, Nakai Distr., Newman et al. LAO 513 (E) CHAMPASAK, Khong Distr., Maxwell 97-1173 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 102 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 584 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 558 (E) CHAMPASAK, Khong Distr., Maxwell 98-948 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 629 (CMU) Cyclea tonkinensis Gagnep. Stephania japonica var. discolor (Blume) Forman Menyanthaceae Nymphoides indica (L.) O.Kuntze Moraceae Artocarpus lakoocha Roxb. Menispermaceae Cocculus orbiculatus (L.) DC. Cyclea barbata Miers Province, district, voucher specimen and herbarium location Family, genus and species 244 M. NEWMAN ET AL. KHAMMOUAN, Nakai Distr., Newman et al. LAO 350 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 272 (E) CHAMPASAK, Khong Distr., Maxwell 97-1119 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 506 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 264 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 26 (E) CHAMPASAK, Khong Distr., Maxwell 98-492 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 765 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 554 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 253 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 628 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-486 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-1057 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1164 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 200 (E) Broussonetia kurzii (Hook.f.) Corner Ficus chartacea King Ficus curtipes Corner Ficus heteropleura Blume Ficus lamponga Miq. Ficus pisocarpa Blume Ficus pubilimba Merr. Ficus punctata Thunb. Ficus semicordata Buch.-Ham. ex Sm. Morus macroura Miq. Morus australis Poiret Myristicaceae Horsfieldia thorelii Lecomte Knema conferta (King) Warb. Knema tenuinervia subsp. setosa W.J.de Wilde KHAMMOUAN, Nakai Distr., Newman et al. LAO 850 (E) CHAMPASAK, Khong Distr., Maxwell 98-938 (CMU) KHAMMOUAN, Newman et al. LAO 1240 CHAMPASAK, Khong Distr., Maxwell 98-55 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 347 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 316 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 9 (E) CHAMPASAK, Khong Distr., Maxwell 98-39 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-1036 (CMU) Syzygium antisepticum (Blume) Merr. & L.M.Perry Syzygium siamensis (Craib) Chantaran. & J.Parn. Syzygium syzygioides (Miq.) Merr. & L.M.Perry Tristaniopsis burmanica (Griff.) Peter G.Wilson & J.T.Waterh. Tristaniopsis burmanica var. rufescens (Hance) J.Parn. & NicLugh. Nymphaeaceae Nymphaea nouchali Burm.f. Myrtaceae Acmena acuminatissima (Blume) Merr. & L.M.Perry Rhodamnia cinerea Jack Province, district, voucher specimen and herbarium location Family, genus and species NEW RECORDS IN THE FLORA OF LAOS 245 KHAMMOUAN, Nakai Distr., Newman et al. LAO 712 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 240 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 800 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1426 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 731 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 901 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 918 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 549 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 273 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1413 (E) Oleaceae Jasminum decipiens P.S.Green Jasminum lanceolaria Roxb. Ligustrum confusum Decne. Pentaphyllaceae Cleyera pachyphylla Chun ex H.T.Chang Eurya acuminata DC. Eurya acuminata var. wallichiana Dyer Eurya cuneata Kobuski var. cuneata Eurya nitida Korth. var. nitida Eurya nitida var. siamensis (Craib) H.Keng Ternstroemia gymnanthera Wight & Arn. Piperaceae Piper boehmeriifolium (Miq.) C.DC. var. boehmeriifolium Piper retroflactum Vahl. Phyllanthus taxadiifolius Beille Sauropus heteroblastus Airy Shaw Glochidion sphaerogynum (Müll.Arg.) Kurz Glochidion eriocarpum Champ. LOUANGPHRABANG, Louangphrabang Distr., de Rouw 677 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-880 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 47 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 75 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1114 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 577 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 338 (CMU) XAIGNABOURI, Paklay Distr., Maxwell 99-230 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 154 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 573 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1063 (L) CHAMPASAK, Khong Distr., Maxwell 97-1172 (CMU) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1465 (E) CHAMPASAK, Khong Distr., Maxwell 98-101 (CMU) Olacaceae Anacolosa poilanei Gagnep. Olax scandens Roxb. Phyllanthaceae Antidesma velutinosum Blume Breynia glauca Craib Breynia vitis-idaea (Burm.f.) C.E.C.Fisch. Province, district, voucher specimen and herbarium location Family, genus and species 246 M. NEWMAN ET AL. LOUANGPHRABANG, Louangphrabang Distr., de Rouw 682 (CMU) Ranunculaceae Clematis subumbellata Kurz CHAMPASAK, Khong Distr., Maxwell 97-1102 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 699 (E) CHAMPASAK, Khong Distr., Maxwell 98-131 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-479 (CMU) CHAMPASAK, Khong Distr., Maxwell 99-163 (L) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1449 (E) CHAMPASAK, Khong Distr., Maxwell 98-892 (L) CHAMPASAK, Khong Distr., Maxwell 98-923 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-76 (L) Ventilago denticulata Willd. Ziziphus nummularia (Burm.f.) Wight & Arn. Rubiaceae Anthocephalus chinensis (Lam.) A.Rich. Argostemma laeve Benn. Borreria brachystema (Benth.) Valeton Borreria repens DC. Dentella repens (L.) J.R.Forst. & G.Forst. Rhamnaceae Berchemia floribunda (Wall.) Brongn. CHAMPASAK, Khong Distr., Maxwell 98-866 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-425 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-512 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 391 (E) CHAMPASAK, Khong Distr., Maxwell 98-414 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 74 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 915 (E) Pteridaceae Cheilanthes chusana Hook. Hemionitis arifolia (Burm.f.) Moore Pteris heteromorpha Fée Pyrrosia rasamale (Racib.) K.H.Shing Polypodiaceae Loxogramme cuspidata (Zenker) M.G.Price Pyrrosia longifolia (Burm.f.) Morton KHAMMOUAN, Nakai Distr., Newman et al. LAO 222 (E) CHAMPASAK, Khong Distr., Maxwell 98-143 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 495 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 679 (CMU) Plumbaginaceae Plumbago indica L. Polygonaceae Polygonum barbatum L. Polygonum flaccidum Meisn. Province, district, voucher specimen and herbarium location Family, genus and species NEW RECORDS IN THE FLORA OF LAOS 247 CHAMPASAK, Khong Distr., Maxwell 98-159 (L) CHAMPASAK, Khong Distr., Maxwell 98-440 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 428 (E) CHAMPASAK, Khong Distr., Maxwell 98-117 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 309 (E) XAIGNABOURI, Paklay Distr., Maxwell 99-269 (L) XAIGNABOURI, Paklay Distr., Maxwell 99-296 (L) CHAMPASAK, Khong Distr., Maxwell 97-1195 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 749 (CMU) XAIGNABOURI, Paklay Distr., Maxwell 99-266 (L) CHAMPASAK, Khong Distr., Maxwell 98-954 (L) CHAMPASAK, Khong Distr., Maxwell 97-1080 (L) CHAMPASAK, Khong Distr., Maxwell 98-991 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 750 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1192 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 753 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 383 (CMU) CHAMPASAK, Khong Distr., Maxwell 97-1089 (L) CHAMPASAK, Khong Distr., Maxwell 98-95 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 13 (E) CHAMPASAK, Khong Distr., Maxwell 98-105 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 146 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-511 (L) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1450 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 706 (CMU) XAIGNABOURI, Paklay Distr., Maxwell 99-280 (L) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1219 (E) CHAMPASAK, Khong Distr., Maxwell 97-1196 (L) VIENTIANE, Maxwell 99-175 (L) Diplospora viridiflora DC. Hedyotis gracilipes (Craib) Fukuoka Hedyotis nodiflora Wall. ex G.Don Hedyotis ovalifolia Cav. Hedyotis pinifolia Wall. Hedyotis pruinosa Wight & Arn. Hedyotis pterita Blume Hedyotis tenelliflora var. kerrii (Craib) Fukui Hedyotis tetrangularis (Korth.) Walp. Ixora cibdela Craib Ixora henryi H.Lév. Ixora javanica (Blume) DC. Knoxia mollis Wight & Arn. Morinda pandurifolia Kuntze Morinda umbellata L. Mussaenda sanderiana Roxb. Mycetia gracilis Craib Neanotis wightiana (Wight & Arn.) W.H.Lewis Ophiorrhiza hispidula Wall. ex G.Don Hedyotis auricularia L. Hedyotis chereevensis (Pierre) Fukuoka Hedyotis coronaria (Kurz) Craib Fagerlindia armigera (K.Schum.) Tirveng. Gardenia sootepensis Hutch. Province, district, voucher specimen and herbarium location Family, genus and species 248 M. NEWMAN ET AL. CHAMPASAK, Khong Distr., Maxwell 97-1122 (L) CHAMPASAK, Khong Distr., Maxwell 97-1188 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 701 (CMU) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1472 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 683 (E) CHAMPASAK, Khong Distr., Maxwell 98-43 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 431 (CMU) Oxyceros longiflora (Lam.) T.Yamaz. Paederia pallida Craib KHAMMOUAN, Nakai Distr., Newman et al. LAO 370 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 690 (E) KHAMMOUAN, Boulapha Distr., Newman et al. LAO 1423 (E) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 83 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-121 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 603 (E) CHAMPASAK, Khong Distr., Maxwell 98-125 (L) KHAMMOUAN, Nakai Distr., Newman et al. LAO 464 (E) CHAMPASAK, Khong Distr., Maxwell 98-119 (L) CHAMPASAK, Khong Distr., Maxwell 98-509 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-550 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 21 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 843 (E) Ruscaceae Ophiopogon reptans Hook.f. Santalaceae Viscum ovalifolium DC. Sapindaceae Acer calcaratum Gagnep. Dimocarpus longan var. obtusus (Pierre) Leenh. Lepisanthes fruticosa (Roxb.) Leenh. Lepisanthes rubiginosa (Roxb.) Leenh. Lepisanthes tetraphylla (Vahl) Radlk. Sapindus saponaria L. Schleichera oleosa (Lour.) Oken Simaroubaceae Quassia harmandiana (Pierre) Noot. Stemonaceae Stemona burkillii Prain Stemonuraceae Gomphandra tetrandra (Wall. ex Roxb.) Sleumer Theaceae Camellia candida H.T.Chang Psychotria sarmentosa Blume Tarennoidea wallichii (Hook.f.) Tirveng. & Sastre Wendlandia tinctoria DC. Province, district, voucher specimen and herbarium location Family, genus and species NEW RECORDS IN THE FLORA OF LAOS 249 Cissus quadrangularis L. Leea indica (Burm.f.) Merr. Cissus hastata Miq. Vitaceae Cayratia japonica (Thunb.) Gagnep. Cayratia roxburghii (Wight & Arn.) Gagnep. Cayratia trifolia Domin Verbenaceae Phyla nodiflora (L.) Greene Boehmeria zollingeriana Wedd. Elatostema bulbifera Kurz Elatostema crytrandrifolium (Zoll. & Moritzi) Miq. Elatostema monandrum (D.Don) H.Hara Laportea interrupta (L.) Chew LOUANGPHRABANG, Louangphrabang Distr., de Rouw CHAMPASAK, Khong Distr., Maxwell 98-499 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-473 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw CHAMPASAK, Khong Distr., Maxwell 98-988 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw CHAMPASAK, Khong Distr., Maxwell 97-1113 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-994 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw CHAMPASAK, Khong Distr., Maxwell 98-124 (CMU) (CMU) (CMU) (CMU) (CMU) 167 (CMU) 760 (CMU) 304 (CMU) 761 (CMU) 741 (CMU) 742 740 746 747 744 (CMU) 743 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-144 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 115 (CMU) CHAMPASAK, Phonthong Distr., Munzinger 241 (P) Thelypteridaceae Meniscium proliferum Sw. Thelypteris subelata (Baker) K.Iwats. Wikstroemia androsaemifolia Decne. LOUANGPHRABANG, Louangphrabang Distr., de Rouw LOUANGPHRABANG, Louangphrabang Distr., de Rouw XAIGNABOURI, Paklay Distr., Maxwell 99-290 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw LOUANGPHRABANG, Louangphrabang Distr., de Rouw LOUANGPHRABANG, Louangphrabang Distr., de Rouw LOUANGPHRABANG, Louangphrabang Distr., de Rouw CHAMPASAK, Khong Distr., Maxwell 98-912 (L) LOUANGPHRABANG, Louangphrabang Distr., de Rouw KHAMMOUAN, Nakai Distr., Newman et al. LAO 1013 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 547 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 1010 (E) Camellia caudate Wall. Camellia drupifera Lour. Camellia kissii Wall. Urticaceae Boehmeria clidemioides Miq. Boehmeria platyphylla D.Don Province, district, voucher specimen and herbarium location Family, genus and species 250 M. NEWMAN ET AL. View publication stats Province, district, voucher specimen and herbarium location LOUANGPHRABANG, Louangphrabang Distr., de Rouw 762 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 763 (CMU) LOUANGPHRABANG, Louangphrabang Distr., de Rouw 765 (CMU) KHAMMOUAN, Nakai Distr., Newman et al. LAO 857 (E) KHAMMOUAN, Nakai Distr., Newman et al. LAO 1547 (E) CHAMPASAK, Khong Distr., Maxwell 97-1194 (CMU) CHAMPASAK, Khong Distr., Maxwell 98-543 (CMU) BOLIKHAMXAI, Khamkheuth Distr., Newman et al. LAO 1529 (E) BOLIKHAMXAI, Khamkheuth Distr., Newman et al. LAO 1533 (E) Family, genus and species Parthenocissus semicordata Planch. Tetrastigma garrettii Gagnep. Tetrastigma lanceolarium Planch. Zingiberaceae Alpinia oblongifolia Hayata Amomum repoeense Pierre ex Gagnep. Boesenbergia rotunda (L.) Mansf. Curcuma zedoaria (Christm.) Roscoe Globba albiflora Ridl. var. aurea Holttum Globba siamensis (Hemsl.) Hemsl. NEW RECORDS IN THE FLORA OF LAOS 251