Common Name: LEGUME FAMILY Habit: Annual to tree. Leaf: generally alternate, generally compound, generally stipuled, generally entire, pinnately veined Inflorescence: generally raceme, spike, umbel or head; or flowers 1--few in axils. Flower: generally bisexual, generally bilateral; hypanthium 0 or flat to tubular; sepals generally 5, generally fused; petals generally 5, free, fused, or lower 2 +- united into keel (see 3, Key to Groups, for banner, wings); stamens 10 or many (or [1], 5, 6, 7, 9), free or fused or 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, including a stalk-like base (above receptacle) or not. Seed: 1--many, often +- reniform, generally hard, smooth. Genera In Family: +- 730 genera, 19400 species: worldwide; with grasses, requisite in agriculture, most natural ecosystems. Many cultivated, most importantly Arachis, peanut; Glycine, soybean; Phaseolus, beans; Medicago, alfalfa; Trifolium, clovers; many orns. Note: Unless stated otherwise, fruit length including stalk-like base, number of 2° leaflets is per 1° leaflet. Upper suture of fruit adaxial, lower abaxial. Anthyllis vulneraria L. evidently a waif, a contaminant of legume seed from Europe. Laburnum anagyroides Medik., collected on Mount St. Helena in 1987, may be naturalized. Ceratonia siliqua L., carob tree (Group 2), differs from Gleditsia triacanthos L. in having evergreen (vs deciduous) leaves that are 1-pinnate (vs 1-pinnate on spurs on old stems, 2-pinnate on new stems) with 2--5(8) (vs 7--17) 1° leaflets, commonly cultivated, now naturalized in southern California. Aeschynomene rudis Benth. , Halimodendron halodendron (Pall.) Voss (possibly extirpated), Lens culinaris Medik. are agricultural weeds. Caragana arborescens Lam. only cult. Ononis alopecuroides L. , Sphaerophysa salsula (Pall.) DC. all evidently extirpated. Cercidium moved to Parkinsonia; Chamaecytisus to Cytisus; Psoralidium lanceolatum to Ladeania. eFlora Treatment Author: Martin F. Wojciechowski, except as noted Scientific Editor: Martin F. Wojciechowski, Thomas J. Rosatti.
Common Name: DEERVETCH, DEERWEED Habit: Annual, perennial herb, shrub, unarmed. Leaf: generally odd-1-pinnate (or +- palmately compound, rarely some or most simple); stipules often gland-like, bump-like, or conic, often not apparent; leaflets 3--9, generally irregularly arranged, lowest not stipular in position. Inflorescence: umbel or 1--2-flowered, axillary, generally peduncled, often bracted. Flower: corolla generally yellow (white, pink), fading darker; 9 filaments fused, 1 free. Fruit: dehiscent or not, exserted from calyx or not, ovoid to oblong, +- beaked. Seed: 1--several. Etymology: (Greek acme, point, apex, probably for the hooked-tipped fruit) Note: Intermediates may be hybrids. Unabridged Note: Pollen has 4(7) apertures. eFlora Treatment Author: Luc Brouillet Reference: Brouillet 2008 J Bot Res Inst Texas 2:387--394 Unabridged Reference: Isely 1981 Mem New York Bot Gard 25:128--206; Sokoloff 2000 Ann Bot Fenn 37:125--131
Acmispon americanus (Nutt.) Rydb. var. americanus
NATIVE Habit: Annual, generally hairy. Stem: prostrate to erect, simple or openly branched, 0.5--6 dm. Leaf: pinnate or +- simple; stipules gland-like; leaflets generally 3, generally 10--20 mm, lanceolate to elliptic; axis not flat. Inflorescence: 1-flowered, peduncle (3--10)15 mm, bracts simple. Flower: calyx 2.5--6.5 mm, lobes >> tube, hairs soft-shaggy; corolla 5--9 mm, +- white or yellow to pink, wings +- = keel, stigma glabrous. Fruit: dehiscent, spreading or pendent, +- entirely exserted, 1.5--3 cm, oblong, +- straight, generally flat, beak curved, 0.9--1.7 mm. Seed: 3--8. Chromosomes: 2n=14. Ecology: Coast, chaparral, mountain forest, water courses, roadsides, other disturbed areas; Elevation: < 2400 m. Bioregional Distribution: CA (exc DSon); Distribution Outside California: to Canada, central United States, Mexico. Flowering Time: May--Oct Note: Many races, ecological forms. Synonyms: Lotus purshianus Clem. & E.G. Clem. var. glaber (Nutt.) Munz; Lotus purshianus var. purshianus Jepson eFlora Author: Luc Brouillet Reference: Brouillet 2008 J Bot Res Inst Texas 2:387--394 Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Acmispon Next taxon: Acmispon argophyllus
Botanical illustration including Acmispon americanus var. americanus
Citation for this treatment: Luc Brouillet 2022, Acmispon americanus var. americanus, in Jepson Flora Project (eds.) Jepson eFlora, Revision 11, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=91832, accessed on December 03, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on December 03, 2024.
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Duplicates counted once; synonyms included.
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Blue line denotes eFlora flowering time (fruiting time in some monocot genera).