Now showing items 1-10 of 112
(Vol. 08, 2005-12) A Revision of the Teucrium Cubense (Lamiaceae) Complex
In 1946 the Teucrium cubense complex was treated as having four subspecies by McClintock and Epling. In the present account these have been treated as distinct species: Teucrium cordobense, T. cubense, T. depressum, and ...
(Vol. 08, 2005-12) A New Mexican Species of Croton Section Eluteria (Euphorbiaceae)
A new species of Croton sect. Eluteria from Estado de Veracruz, Mexico, Croton gomezii, is described and illustrated. The species appears most closely related to Croton arboreus on the basis of its indumentum, but has been ...
(Vol.12, 2009-12) A New South American Subsection of Sida Sect. Nelavaga (Malvaceae) with Two New Species
Sida [sect. Nelavaga] subsect. Conglomerata is described as a new subsection of the genus, including eight species from South America. Two of the eight are newly described: Sida calva and S. florulenta. The group is ...
(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.14, 2011-12) Systematics of the Rhynchosia Senna Complex (Fabaceae)
The Rhynchosia senna complex is treated as having four species: R. senna and R. azuaensis, confined to South America; R. prostrata, confined to North America; and R. texana, occurring in both North and South America. One ...
(Vol.11 2008-12) Classification Of Subtribe Conyzinae (Asteraceae: Astereae)
Subtribe Conyzinae includes Erigeron, New World Conyza, the North American genus Aphanostephus, and a small group of South American species segregated as the genera Apopyros, Darwiniothamnus, Hysterionica, Leptostelma, and ...
(Vol.11, 2008-12) Revision of the Genus Orbexilum (Fabaceae: Psoraleeae)
Orbexilum Raf. is a wholly North American genus confined to the southeastern U.S.A. and Mexico. Grimes provided a revision of the complex in which eight species were recognized. Turner added two additional species, O. ...
(Vol.11, 2008-12) Heliotropium Addendum
In the issue of Lundellia 10 (Dec 2007), Turner (p. 8) provided a Figure reportedly showing the distribution Heliotropium powellorum and H. torreyi. Unfortunately the Texas collections of the latter were inadvertently ...
(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.