Acmispon grandiflorus |
Acmispon parviflorus |
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chaparral bird's-foot trefoil, large leaf lotus, large-flower lotus |
desert deer-vetch, Hill lotus, short-flower bird's-foot trefoil, small-flower bird's-foot trefoil, small-flower lotus, small-flower trefoil |
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Habit | Herbs, perennial, cespitose, sometimes robust, grayish or green, 1–4(–15) dm, not fleshy, ± densely puberulent or strigillose; rhizomatous, woody based. | Herbs, annual, cespitose, green, 0.3–4.8 dm, not fleshy, glabrous or sparsely strigillose; taprooted. | ||||
Stems | 1–5+, decumbent to erect, branched, herbaceous, often striate, leafy. |
1–10, erect to procumbent, branched or unbranched, herbaceous, leafy. |
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Leaves | irregularly pinnate; stipules glandlike, conic; petiolate or sessile; rachis 2–3.5(–5.5) mm, not flattened; leaflets 7–9(–12), blades usually elliptic to obovate, sometimes ovate, apex acute to obtuse, surfaces sparsely to densely puberulent or villosulous to strigillose. |
irregularly pinnate to palmate; stipules glandlike; subsessile to short-petiolate; rachis 2–8 mm, sometimes flattened; leaflets 3–5, blades obovate to oblong or elliptic, apex obtuse, surfaces strigose. |
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Inflorescences | 3–9(–11)-flowered. |
1-flowered. |
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Peduncles | ascending or spreading, 10–80 mm, longer than leaves; bract 1(–3)-foliolate, distal. |
ascending, filiform, (0 or)1–26(–55) mm, shorter to longer than leaves; bract (1–)3-foliolate, distal. |
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Flowers | 12–25 mm; calyx (4.5–)5.5–10 mm, tube villosulous, lobes subulate; corolla greenish white, white or yellow, fading to rose or reddish, claws shorter than calyx tube, banner ascending 45–90°, wings longer than banner and keel; style nearly straight or basally curved, glabrous. |
(2.5–)4–6 mm; calyx 1–2.5 mm, tube sparsely strigillose, lobes subulate; corolla pink or salmon, quickly fading, with yellowish wings and keel, claws longer than calyx tube, banner implicate, wings ± equaling to slightly longer than keel; style curved, glabrous. |
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Legumes | persistent, exserted, brown, linear-oblong, straight, turgid, sometimes slightly constricted, incompletely septate, 25–42(–70) × 2–3 mm, leathery, apex short hook-beaked, dehiscent, smooth, margins smooth, thickened, glabrate. |
persistent, exserted, erect or spreading, brown or tawny, curved or straight, compressed, constricted, not septate, narrowly oblong, 15–27 × 2–2.5 mm, thinly leathery, apex short hook-beaked, dehiscent, smooth, margins smooth, thin, wavy, glabrous or sparsely strigillose. |
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Seeds | 5–9, olive to reddish brown, mottled, broadly ovoid, smooth. |
3–9, brown, not mottled, subglobose to shortly oblong, smooth. |
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2n | = 14. |
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Acmispon grandiflorus |
Acmispon parviflorus |
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Phenology | Flowering spring(–early summer). | |||||
Habitat | Coastal bluffs, clearings in oak-pine or fir woodlands, open grassy areas, burnt chaparral, cut-overs, riverbars, banks, thickets, open disturbed areas, roadsides. | |||||
Elevation | 0–1400 m. (0–4600 ft.) | |||||
Distribution | nw Mexico; California
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CA; OR; WA; BC
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Acmispon parviflorus occurs in California from the Peninsular Ranges, the South Coast, and the Channel Islands northward to the northwest, the Sacramento Valley, and the northern and central Sierra Nevada, through coastal western Oregon and Washington from the Cascade Range westward, into southwestern British Columbia. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 11. | FNA vol. 11. | ||||
Parent taxa | Fabaceae > subfam. Faboideae > Acmispon | Fabaceae > subfam. Faboideae > Acmispon | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Hosackia grandiflora, Anisolotus grandiflorus, Lotus grandiflorus, Ottleya grandiflora | Hosackia parviflora, Anisolotus parviflorus, H. microphylla, Lotus micranthus | ||||
Name authority | (Bentham) Brouillet: J. Bot. Res. Inst. Texas 2: 390. (2008) | (Bentham) D. D. Sokoloff: Ann. Bot. Fenn. 37: 129. (2000) | ||||
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