(Redirected from Acmispon rigidus)

Ottleya rigida
Lotus rigidus.jpg
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Genus: Ottleya
O. rigida
Binomial name
Ottleya rigida
(Benth.) D.D.Sokoloff
  • Acmispon rigidus (Benth.) Brouillet
  • Anisolotus argensis (Coult.) A.Heller
  • Anisolotus rigidus (Benth.) Rydb.
  • Hosackia rigida Benth.
  • Lotus argensis Coult.
  • Lotus rigidus Greene

Ottleya rigida, synonyms Lotus rigidus and Acmispon rigidus, is a flowering plant in the pea family (Fabaceae), native to the southwestern United States and northwestern Mexico.[1] It is known as shrubby deervetch[2] or desert rock-pea. It is found in the Mojave Desert and Sonoran Desert.[3][4]


It is a perennial herbaceous plant growing to 0.5–1.5 m tall. The leaves are irregularly pinnate or palmate with three or four leaflets, 5–15 mm long. The flowers are yellow, turning red or purple as they age.

Distribution and habitat

Ottleya rigida is found in the southwestern United States (Arizona, California, Nevada and Utah) and in northwestern Mexico.[1] It occurs in the Mojave Desert north to Inyo County, California, and in the Sonoran Desert south to the Baja California Peninsula.[3] It is found on dry slopes and desert dry washes below 6,000 ft above sea level, in Joshua tree woodland, and in pinyon-juniper woodland plant communities.[3]


  1. ^ a b c "Ottleya rigida (Benth.) D.D.Sokoloff", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2018-02-10
  2. ^ "Lotus rigidus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 23 June 2015.
  3. ^ a b c Mojave Desert Wildflowers, Pam MacKay, 2nd Ed. 2013, p. 232
  4. ^ Mojave Desert Wildflowers, Jon Mark Stewart, 1998, pg. 72

External links