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Acmispon rigidus
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Shrubby Deervetch
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Acmispon rigidus

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About Shrubby Deervetch (Acmispon rigidus) Desert rock pea (Lotus rigidus), is a flowering plant in the family Fabaceae, native to the Mojave Desert in the Southwestern United States and northwest Mexico. It is found between the Colorado River and Death Valley, and south into Baja California. Other names include shrubby deervetch. It is a perennial herbaceous plant growing to 0.5-1.5 meter tall. The leaves are irregularly pinnate or palmate with 3-4 leaflets, 5-15 millimeter long. The flowers are yellow, turning red or purple as they age.
Plant Description
Plant Type
Perennial herb

Max. Height
1.6 - 5 ft (0.49 - 1.5 m)

Flower Color
Yellow, Purple, Red

Native Status

Natural Setting
Site Type
Desert washes and flats


Elevation ?
489' - 6548'

Annual Precip. ?
3.7" - 17.1"

Summer Precip. ?
0.66" - 2.47"

Coldest Month ?
39.2° F - 58.8° F

Hottest Month ?
64.6° F - 87.8° F

Humidity ?
2.84 vpd - 38.88 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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