Psorothamnus
''Psorothamnus'' is a genus of plants in the legume family. These are shrubs and small trees. Many are known by the general common name indigo bush. Some are referred to as daleas, as this genus was once included in genus ''Dalea''. These are generally thorny, thickly branched, strongly scented bushes. Most species bear lupinlike raceme inflorescences of bright purple legume flowers and gland-rich pods. ''Psorothamnus'' species are native to the southwestern United States and northern Mexico. The genus is paraphyletic Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In co ... and it has been proposed that the genus ''Psorodendron'' be reinstated to accommodate sections ''Xylodalea'', ''Capnodendron'', and ''Winnemucca''. Species ''Psorothamnus'' comprises the following species: * '' Psor ...
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