|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
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 , 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.
± 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. [Lewis et al. (eds) 2005 Legumes of the World. RBG, Kew] 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. <Noxious weed>, Halimodendron halodendron (Pall.) Voss <Noxious weed> (possibly extirpated), Lens culinaris Medik. are agricultural weeds. Caragana arborescens Lam. only cultivated. Ononis alopecuroides L. <Noxious weed>, Sphaerophysa salsula (Pall.) DC. <Noxious weed> all evidently extirpated. Cercidium moved to Parkinsonia; Chamaecytisus to Cytisus; Psoralidium lanceolatum to Ladeania. —Scientific Editors: Martin F. Wojciechowski, Thomas J. Rosatti.
Key to Fabaceae
Annual, perennial herb from crown, generally unarmed; hairs generally present, simple or branches 2, from base, parallel to leaf surface, unequal or not. Stem: 0 or prostrate to erect. Leaf: odd-1-pinnate (or palmately compound); leaflets generally jointed to midrib, entire; stipules membranous, lower fused around stem into sheaths (stipule sheaths) or not. Inflorescence: raceme, head- or umbel-like or not, axillary; flowers 2–many. Flower: bilateral; keel petals 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 ± dry in age, sometimes deciduous (falling from plant with or without pedicel, calyx, receptacle) before dehiscence. Seed: 2–many, smooth, compressed, ± notched at attachment scar.Key to Astragalus
> 2500 species: ± worldwide (380 in North America, 97 in California, including many rare taxa). (Greek: ankle-bone or dice, perhaps from rattling of seeds within fruit) Difficult; flower and fruit needed for identification; fruit said to be "deciduous" dehisce only after fruit has separated from plant; 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 varieties so identified in key. Fruit length including beak and any stalk-like base unless fruit body specified; fruit depth is suture-to-suture axis. Astragalus tephrodes A. Gray var. brachylobus (A. Gray) Barneby in southwestern Utah, Arizona, near California.
Unabridged references: [Barneby 1964 Mem New York Bot Gard 20:1–1188; Isely 1998 Native and Naturalized Leguminosae (Fabaceae) of the United States]
Annual, slender; minutely strigose. Stem: prostrate or ± ascending, 4–45 cm. Leaf: 1.5–6.5 cm; leaflets 5–13, 2–10 mm, at least upper elliptic, acute at tips, lower blunt or not, notched at tip. Inflorescence: flowers 1–4. Flower: 4–7 mm; corolla ± white, faintly lilac-tinged (± purple). Fruit: 10–20 mm, 2–3 mm wide, linear in side view, gently curved near base, ± straight toward tip, ± 3-sided (laterals ± convex, lower grooved), maturing dark brown or ± black, glabrous or minutely strigose; chambers ± 2. See note under Astragalus acutirostris; varieties intergrade; Astragalus nuttallianus var. austrinus (Small) Barneby (calyx lobes generally 1.8–2.8 mm, hairs 0.7–1.2 mm, spreading, stiff) near California, in western Arizona. [Online Interchange]Key to Astragalus nuttallianus
Leaf: leaflet tips acute. Flower: calyx tube 1.9–2.8 mm, ± 1/2 as wide, lobes 1–1.7(2) mm, hairs ascending, short, not stiff.
2n=22. Sandy or gravelly flats, washes; 250–2150 m. Mojave Desert, w Sonoran Desert; to Utah, Arizona. Mar–May [Online Interchange]
Previous taxon: Astragalus nuttallianus var. cedrosensis
Next taxon: Astragalus nuttallii
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 9 2014
Citation for this treatment: [Author of taxon treatment] 2012. Astragalus, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=54874, accessed on Mar 9 2014
Copyright © 2013 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|Astragalus nuttallianus var. imperfectus|
See CalPhotos for additional images
© 2012 Steve Matson
|Bioregions in which Astragalus nuttallianus var. imperfectus occurs|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
|View elevation by latitude chart|| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
CCH collections by month