Acmispon strigosus (Nutt.) Brouillet (redirected from: Lotus rubellus)
Family: Fabaceae
[Hosackia rubella Nutt.,  more...]
Acmispon strigosus image
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

Plant: Annual, often fleshy, hairy or not; stem prostrate, generally branched from base

Leaves: stipules gland-like; leaflets 4-9, generally alternate, 3-10 mm, oblanceolate to obovate; axis ± flat, ± blade-like

INFLORESCENCE: 1-2-flowered; peduncle generally bracted

Flowers: calyx 3-5.5 mm, lobes < tube; corolla opening or not, 5-10 mm, yellow, turning orange or reddish, wings generally > keel; stamens 10, 9 filaments fused, 1 free; stigma puberulent

Fruit: legume, dehiscent, 1-3.5 cm, generally ± curved only at or near tip; Seeds several, often ± reniform, generally hard, smooth

Misc: Coastal scrub, chaparral, foothills, deserts, roadsides, other disturbed areas; < 2300 m.; Mar-Jun

References: Jepson Manual 1993