William R. Carr's research while affiliated with The Nature Conservancy and other places

Publications (2)

Article
Phaseolus texensis is a new species known only from rocky canyons of the eastern and southern Edwards Plateau of central Texas. Morphological examination and field observations, in conjunction with current molecular phylogenetic analyses based on nuclear ribosomal and chloroplast DNA sequences and a discrete and limited geographical range, support...
Article
Full-text available
Field and herbarium studies show Thalictrum texanum, a species of conservation concern, to be distinct from both T. arkansanum and T. debile. The species, which is endemic to southeast Texas, is documented to occur in eight counties. A description of the species, list of exsiccatae, distribution map, discussion of its abundance and environment, and...

Citations

... G1 or G2), assigned a G2 (imperiled) status. The species is narrowly endemic to rocky canyons in the eastern and southern parts of the Edwards Plateau of Texas and is known from only a few localities (Delgado-Salinas and Carr 2007). The IUCN Red List of Threatened Species lists P. lignosus, the Bermuda endemic, as Critically Endangered ( Copeland et al. 2014). ...