Acmispon rigidus

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Acmispon rigidus
Lotus rigidus.jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Acmispon
Species: A. rigidus
Binomial name
Acmispon rigidus
(Benth.) Brouillet

Lotus rigidus (Benth.) Greene Ottleya rigida (Benth.) D. D. Sokoloff

Acmispon rigidus (formerly Lotus rigidus), shrubby deervetch[1] or desert rock-pea, is a perennial flowering plant in pea family (Fabaceae) found in the Mojave Desert and Sonoran Desert.[2][3]

Range and habitat[edit]

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.[2] It occurs in the Mojave Desert north to Inyo County, California, and in the Sonoran Desert south to the Baja California Peninsula.[2]


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.


  1. ^ "Lotus rigidus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 23 June 2015. 
  2. ^ a b c Mojave Desert Wildflowers, Pam MacKay, 2nd Ed. 2013, p. 232
  3. ^ Mojave Desert Wildflowers, Jon Mark Stewart, 1998, pg. 72

External links[edit]