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Flores de A. Salvia fulgens, B. !"# $%&'%())*+(, y C. S. tilantongensis sp. nov. El inciso D. muestra el tallo exfoliante de esta última (fotografías tomadas por J. G. González Gallegos. A. en Acuitzio del Canje, Michoacán; B. en Sierra de Manantlán, Jalisco; C y D. en Santiago Tilantongo, Oaxaca).
Source publication
Salvia tilantongensis is described and illustrated as a new species from the Mixteca Alta of Oaxaca, Mexico. The new taxon is morphologically similar to Salvia fulgens and S. gesneriiflora. It differs from both by its exfoliating bark, petioles attached to a thickened base from the node, narrower leaves, smaller floral bracts and with a shorter ape...
Context in source publication
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Citations
Background: Agave ellemeetiana (A. sect. Choritepalae) features soft and “spineless” leaves and occurs in two disjunct and ecologically differentiated populations classified as subspecies. An incidental look at the flowers of A. ellemeetiana ssp. subdentata unveiled that these did not match those of A. ellemeetiana s. str. nor those of sect. Choritepalae.
Questions: Do these disjunct populations differ in flower and fruit morphology? Do they belong to the same section within Agave?
Hypotheses: The floral morphology of populations of Agave ellemeetiana ssp. subdentata from western Oaxaca places this species in A. sect. Inermes, and the set of qualitative and quantitative differences is sufficient to recognize it as a distinct species.
Dahlia mixtecana (Asteraceae, Coreopsideae) is described and illustrated as a new species endemic to western Oaxaca, Mexico. This taxon is related to Dahlia sect. Dahlia and Dahlia sect. Entemophyllon. However, based on the current evidence available and the current system of infrageneric groups, it does not appear possible to assign the new species with confidence to any taxonomic section. The description of the new species is presented with distribution maps, illustrations, photographs, discussions on the taxonomic relationship and an identification key to the sections and species of Dahlia occurring in Oaxaca and species in Dahlia sect. Entemophyllon related to D. mixtecana.
