Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.



Annual to tree
Leaves generally compound, alternate, stipuled; leaflets generally entire
Inflorescence: generally raceme, spike, umbel or head; flowers sometime 1–2 in axils
Flowers generally bisexual, generally bilateral; hypanthium generally flat or cup-like; sepals generally 5, fused; petals generally 5, free, or the 2 lower ± fused; stamens 1–many, often 10 with 9 filaments at least partly fused, 1 (uppermost) free; pistil 1, ovary superior, generally 1-chambered, ovules 1–many, style, stigma 1
Fruit: legume, sometimes including a stalk-like base above receptacle, dehiscent, or indehiscent and breaking into 1-seeded segments, or indehiscent, 1-seeded, and achene-like
Seeds 1–several, often ± reniform, generally hard, smooth
Genera in family: ± 650 genera, 18,000 species: worldwide; with grasses, requisite in agriculture and most natural ecosystems. Many cultivated, most importantly Arachis , peanut; Glycine , soybean; Phaseolus , beans; Medicago ; Trifolium ; and many orns
Reference: [Polhill & Raven (eds) 1981 Advances in legume systematics; Allen & Allen 1981 Leguminosae]
Family description and key to genera by Duane Isely.



Elizabeth McClintock

Tree, shrub; branches with pointed tips; thorns in leaf axils (see leaf scars)
Leaves even-2-pinnate, alternate, falling early; 1° leaflets generally 1 pair
Inflorescence: raceme, axillary, < 7-flowered
Flower slightly bilateral; sepals ± free, all alike, reflexed; petals ± equal, clawed, yellow or cream-white; stamens 10, exserted, free
Fruit dehiscent or not, flat, narrowed between seeds or not
Species in genus: 4 species: deserts, se CA; AZ, nw Mex
Etymology: (Greek: weaver's shuttle, from fruit)
Reference: [Carter 1974 Proc Calif Acad Sci 40(2):17–57]


C. microphyllum (Torr.) Rose & I.M. Johnst.

Shrub, small tree 3–4(9) m; branches generally ascending or spreading, broom-like, hairy
Leaf yellow-green; 1° leaflets 1 pair, 3–6.5 cm
Flower: banner < 10 mm, widely ovate, generally cream-white
Fruit < 11 cm; tip beak-like, generally ending in a spine
Ecology: Uncommon. Rock slopes
Elevation: ± 600 m.
Bioregional distribution: Mojave Desert
Distribution outside California: to Arizona, nw Mexico
Flowering time: Apr–May
Branches used as livestock feed; seeds edible. Hybrids with C. floridum reported.
Horticultural information: SUN, DRN: 8, 9, 10, 14, 15, 16, 19, 20, 21, 22, 23 &IRR: 11, 12, 13; also STBL.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for CERCIDIUM%20microphyllum being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Cercidium microphyllum
Retrieve dichotomous key for Cercidium
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
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