Browsing by Subject "flora of Texas"
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Item (Vol. 04, 2001-12) A New Cryptic Species of Nemophila (Hydrophyllaceae) from Texas and the Leptotypification of N. Phacelioides Nuttall(2001-12) Simpson, Beryl B.; Helfgott, D. Megan; Neff, John L.Nemophila sayersensis, a cryptic species restricted to sandy, nutrient poor soils and sister to N. phacelioides, is described and illustrated. While examining type material of N. phacelioides and that of its synonyms, it became obvious that the species had never been typified despite its widespread distribution and treatment in numerous revisions. We here typify all named entities associated with the two species.Item (Vol.14, 2011-12) A Study of Chaptalia (Asteraceae: Mutisieae) in Central, Southern, and Western Texas and the Resurrection of Chaptalia Carduacea(2011-12) Harms, Robert T.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 indicate the existence in that area of two populations with morphological, phenological, and behavioral differences, and revision of herbarium material shows that they correspond to two distinct taxa that occupy different but partially overlapping ranges in Texas and northern Mexico. Evidence is provided in support of their recognition as distinct species that correspond to C. texana and C. carduacea, both described by E. L. Greene. Descriptions of the two species and a revised key for Chaptalia in Texas are provided.