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.

FABACEAE

LEGUME FAMILY

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.

ASTRAGALUS

Richard Spellenberg

Annual or perennial herb from crown, glabrous to hairy; hairs sometimes forked at base, branches parallel with leaf surface, sometimes very unequal
Stem 0 or prostrate to erect
Leaves odd-1-pinnate; leaflets generally jointed to midrib; stipules membranous, sometimes fused around stem at stem base
Inflorescence: raceme, axillary, sometimes head- or umbel-like; flowers 2–many
Flower bilateral; calyx 5-lobed; banner outside wings in bud, keel blades with small protrusion at base locking into pit on adjacent wing; 9 filaments fused, 1 free; ovary (and fruit) generally sessile, style slender, stigma minute
Fruit generally 1- or ± 2-chambered, often mottled, generally becoming ± dry; placenta on upper suture
Seeds 2–many, smooth, compressed, ± notched at attachment scar
Species in genus: > 2000 species: ± worldwide (380 in North America, 94 in CA including many rare taxa)
Etymology: (Greek: ankle-bone or dice, perhaps from rattling of seeds within fruit)
Reference: [Barneby 1964 Mem NY Bot Gard 20:1–1188; Isely 1986 Iowa State J Res 61:157–289]
Very difficult; both flower and fruit needed for identification; many good species appear similar; some species complexes need study. Taxa near province boundaries may appear in > 1 key. Varieties keyed under species for simplicity; species with vars. so identified in key. Fr length includes beak and any stalk-like base unless fruit body specified.

Native

A. lentiginosus Hook.

FRECKLED MILKVETCH

Perennial (sometimes flowering first year or annual), moderately leafy, ± glabrous to silvery-strigose
Leaf 1–15 cm; leaflets linear to widely ± ovate
Inflorescence: flowers 3–± 50, ascending or spreading
Flower: petals purplish, cream, whitish, or mixed purplish and whitish, keel 0.65–0.8 X banner, banner recurved 30–50°
Fruit ovoid or spheric, widely grooved above and below, generally ± bladdery, ± papery, deciduous; beak generally triangular, flat; chambers 2 below beak
Chromosomes: 2n=22
Ecology: Generally dry, open places
Elevation: -30–3600 m.
Bioregional distribution: n High Sierra Nevada, s Sierra Nevada, Tehachapi Mountain Area, San Joaquin Valley, San Francisco Bay Area,Inner South Coast Ranges, Great Basin Floristic Province, Desert
Distribution outside California: to Washington, Wyoming, Idaho, Colorado, n Mexico
Highly variable; vars. often very distinct, yet intermediates common; flower, fruit both needed for identification.

Native

var. kernensis (Jeps.) Barneby

KERN PLATEAU MILKVETCH

Perennial, minutely strigose
Stem prostrate or decumbent, 2–12 cm, slender
Leaf 1–5 cm; leaflets 7–19, 2–7 mm, ± ovate, upper surface ± glabrous
Inflorescence: flowers 2–9; axis in fruit 3–15 mm
Flower: calyx lobes generally < 1.2 mm; petals whitish, banner 9.3–11.3 mm, keel 7.3–8.7 mm
Fruit 6–10 mm, 6–9 mm wide, ± spheric, bladdery, thinly papery; beak ± cylindric, slender
Ecology: Sandy areas
Elevation: 2350–2600 m.
Bioregional distribution: s High Sierra Nevada
Distribution outside California: s Nevada
See the CNPS Inventory for information about endangerment and rarity.
previous taxon | next taxon
bioregional map for ASTRAGALUS%20lentiginosus%20var.%20kernensis 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 Astragalus lentiginosus var. kernensis
Retrieve dichotomous key for Astragalus
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
Return to the Jepson Interchange main page
Return to treatment index page
Glossary
    FEEDBACK
  • This page is no longer being maintained.


University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California