Psorothamnus

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Psorothamnus
Psorothamnus fremontii 2.jpg
Psorothamnus fremontii
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Amorpheae
Genus: Psorothamnus
Rydb.
Type species
Psorothamnus emoryi
(A.Gray) Rydb.
Species [1]

4; see text

Synonyms [1]
  • AsagraeaBaill.

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.

Contents

The genus formerly included additional species, but was found to be paraphyletic, and genus Psorodendron was reinstated to accommodate sections Xylodalea, Capnodendron, and Winnemucca. [2] [3]

Species

Four species are currently accepted. [4]

Formerly placed here

References

  1. 1 2 "Psorothamnus Rydb". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 12 July 2025.
  2. Cardoso D, Pennington RT, de Queiroz LP, Boatwright JS, Van Wyk BE, Wojciechowski MF, Lavin M (2013). "Reconstructing the deep-branching relationships of the papilionoid legumes". S Afr J Bot . 89: 58–75. doi: 10.1016/j.sajb.2013.05.001 .
  3. McMahon M, Hufford L (2004). "Phylogeny of Amorpheae (Fabaceae: Papilionoideae)". Am J Bot . 91 (8): 1219–1230. doi:10.3732/ajb.91.8.1219. PMID   21653479.
  4. "ILDIS LegumeWeb entry for Psorothamnus". International Legume Database & Information Service. Cardiff School of Computer Science & Informatics. Retrieved 7 July 2014.