Now showing items 1-10 of 10
(Vol.14, 2011-12) A Nomenclator Of Diplostephium (Asteraceae: Astereae): A List Of Species with Their Synonyms and Distribution by Country"
Since the description of Diplostephium by Kunth in 1820, more than 200 Diplostephium taxa have been described. In the absence of a recent revision of the genus, a nomenclator of Diplostephium is provided based on an extensive ...
(Vol.14, 2011-12) A Study of Chaptalia (Asteraceae: Mutisieae) in Central, Southern, and Western Texas and the Resurrection of Chaptalia Carduacea
Recent authors have considered there to be just one species of Chaptalia in central, southern, and western Texas and have called it C. nutans, C. nutans var. texana, or C. texana. Field studies in Travis and Hays counties ...
(Vol.13, 2010-12) Transfer Of Hymenoxys Argentea Var. Thoreauensis to Tetraneuris (Asteraceae: Helenieae: Tetraneuridinae)
Based on evidence supporting the recognition of Tetraneuris as a genus separate from Hymenoxys, Hymenoxys argentea var. thoreauensis is basionym of a new combination, Tetraneuris argentea var. thoreauensis.
(Vol.13, 2010-12) New Taxon in Psacalium (Asteraceae: Senecioneae) From Oaxaca, Mexico
A new peltate-leaved taxon of Psacalium, Psacalium putlanum, is described and illustrated from southwestern Oaxaca, Mexico. It appears to be closely related to the widespread P. peltigerum. Additionally, the closely related ...
(Vol.18, 2015-12) Verbesina Tiburonensis (Asteraceae: Heliantheae), A New Species from Isla Tiburón, Gulf of California, Mexico
Verbesina tiburonensis is a new species from Isla Tiburo´ n, Sonora, Mexico. It is closely related to Verbesina palmeri and V. oligocephala both native to Baja California.
(Vol.17, 2014-12) A New Species Of Roldana (Asteraceae) From Huehuetenango, Guatemala
Roldana riparia is described from Huehuetenango, Guatemala (Municipio de Chiantla). The genus Roldana is abundant in montane forests of Guatemala (nine species) and the new species is endemic to the Sierra Cuchumatanes.
(Vol.16, 2013-12) Two New Species Of Wamalchitamia (Asteraceae: Heliantheae) from Oaxaca, Mexico
Two new species of Wamalchitamia are described from Oaxaca, Mexico: W. serboana and W. yautepecana. Photographs of their holotypes are provided and their relationships to yet other species in the genus are discussed. A key ...
(Vol.15, 2012-12) Preliminary Phylogeny of Diplostephium (Asteraceae): Speciation Rate and Character Evolution
Diplostephium comprises 111 neotropical species that live in high elevation habitats from Costa Rica to Chile. Primarily Andean, the genus seems to have undergone an adaptive radiation indicated by its high number of ...
(Vol. 19, 2016-12) Molecular Phylogeny of Pectis (Tageteae, Asteraceae), A C4 Genus of the Neotropics, and its Sister Genus Porophyllum
Pectis is a genus of 690 xeric adapted New World species. Previous molecular phylogenetic studies showed Pectis closely related to Porophyllum, and one analysis resolved Porophyllum species nested within Pectis. Some Pectis ...
(Vol. 20, 2017-12) Perymenium vandevenderorum (Asteraceae), a New Species From Sonora, Mexico.
A novel species of Perymenium from Sonora, Mexico is described. It appears to be closest to P. nesomii from southwestern Chihuahua, with which it is compared. A map showing distribution of the two taxa is provided.