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Acmispon strigosus (Nutt.) Brouillet  
Family: Fabaceae
strigose bird's-foot trefoil, more...Strigose Deerweed, hairy lotus
[Acmispon strigosus var. hirtellus (Greene) D.W.Taylor, moreHosackia strigosa Nutt., Hosackia strigosa var. hirtella (Greene) H.M. Hall, Hosackia tomentella (Greene) Abrams, Lotus intricatus Eastw., Lotus strigosus var. tomentellus (Greene) Isely, Lotus tomentellus Greene]
Acmispon strigosus image
Stephen Hale
  • SW Field Guide
  • Resources
Wiggins 1964, Kearney and Peebles 1969
Duration: Annual Nativity: Native Lifeform: Forb/Herb General: Prostrate or decumbent annual with several spreading branches 5-35 cm long, sparsely strigose but only youngest parts cinereous; stems essentially glabrate or nearly so. Leaves: Alternate, pinnately compound, fleshy, leaflets 4-9, oblanceolate to obovate, 3-10 mm long, curving in a v-shape (involute), usually strigose, at least along the margins, sometimes purplish, midstem (axis) usually flattened, stipules gland-like. Flowers: Yellow to reddish-orange, with banner, wing, and keel petals (papilionaceous), 3-5.5 mm long, the wings larger than the keel, stamens 10, filaments with 9 fused, 1 free, stigmas puberulent, flowers axillary, solitary, or in groups of 1-2 on bracted peduncles. Fruits: Pods purplish, narrow, cylindrical (terete), 1-3.5 cm long, generally curved only at or near the tip. Seeds several, kidney-shaped (reniform), glabrous. Ecology: Found on sandy or gravelly soil below 3,000 ft (914 m); flowers February-May. Distribution: Arizona, California, Nevada; Mexico. Notes: The thickish, slightly succulent leaves are one feature to pay attention to. Ethnobotany: Used for greens. Etymology: Lotus is from the Greek and is originally applied to a fruit said to make those who tasted it forget their homes, strigosus means covered in straight, flat-lying hairs. Synonyms: Hosackia tomentella, Lotus intricatus, Linnaeus tomentellus, Lotus strigosus var. tomentellus, Lotus tomentellus, Lotus strigosus Editor: SBuckley, 2010
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Open Interactive Map
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Stephen Hale
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Jillian Cowles
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Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
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