Jepson Interchange (more information)
Print edition is available from the University of California Press
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This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants. |
| Jepson Flora Project: Jepson Interchange |
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TREATMENT FROM THE JEPSON MANUAL |
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Jepson Interchange (more information) |
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©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press |
| The second edition of The Jepson Manual (2012) is available from the University of California Press | |
| See also the Jepson eFlora, which parallels the Second Edition |
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.[Polhill & Raven (eds) 1981 Advances in legume systematics; Allen & Allen 1981 Leguminosae] Family description and key to genera by Duane Isely.
Perennial, shrub, tree, armed or not, gland-dotted or not
Leaves odd- or even-2-compound, alternate
Inflorescence: generally raceme, axillary or terminal
Flower ± bilateral; sepals ± free, overlapped above; stamens 10, ± exserted, free
Fruit dehiscent or not, inflated or flat
Species in genus: ± 200 species: tropical, warm temp; some cultivated
Etymology: (A. Caesalpini, Italy, 1519–1603)
Reference: [Isely 1975 Mem New York Bot Garden 25(2):33–51]
| Native |
Shrub 0.5–2 m, hairy; branches slender, generally leafless, rush-like, green
Leaves deciduous; 1° leaflets 3, ternately arranged, lateral pair 0.5–1 cm, with 3–6 pairs of 2° leaflets, terminal 1.5–4 cm, with 8–10 pairs of 2° leaflets
Inflorescence 5–15 cm, few-flowered, puberulent
Flower: sepals 5–6 mm; petals 6–8 mm, banner yellow with reddish marks, later entirely reddish; stamens ± 8 mm, slightly exserted, yellow
Fruit dehiscent, 1.5–2.5 cm, sickle-shaped, with sessile or short-stalked glands especially when young, margins ciliate
Ecology: Uncommon. Gravelly or sandy desert gullies, washes, or canyon slopes
Elevation: 100–500 m.
Bioregional distribution: Sonoran Desert
Distribution outside California: to Texas, Baja California
Flowering time: Mar–May
Synonyms: Hoffmannseggia microphylla TorrHorticultural information: DRN, DRY, SUN: 8, 9, 10, 11, 12, 13, 14, 19, 20, 21; DFCLT
Recent taxonomic note: Hoffmannseggia microphylla Torr.
| 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). |
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