Acmispon strigosus |
Acmispon strigosus var. hirtellus |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
strigose lotus |
||||||||||
Habit | Herbs, annual, usually mat-forming, sometimes cespitose (ascending and bushy), green to grayish, 0.3–5 dm, not or ± fleshy, strigillose, hirsute, canescent-tomentose, or scantily pubescent; taprooted. | Herbs greenish, ± succulent, evidently hirsute, hairs not appressed, especially at apex. | ||||||||
Stems | 1–20+, procumbent or decumbent to ascending, branched basally, herbaceous, slender, leafy. |
ascending or decumbent. |
||||||||
Leaves | irregularly pinnate; stipules glandlike; subsessile; rachis 3–20 mm, flattened; leaflets 4–10, blades unequal, obovate to oblanceolate to linear-oblong or oblong, apex acute to obtuse or truncate, surfaces ± densely tomentose to glabrate. |
|||||||||
Leaflet | blades obovate to linear-oblong, apex obtuse. |
|||||||||
Inflorescences | 1–3-flowered. |
|||||||||
Peduncles | ascending or reflexed, upturned, 3–25 mm, shorter to longer than leaves (often elongated in fruit); bract absent or 1–3-foliolate, usually subtending umbel. |
(0.5–)1 cm, generally elongating in fruit to 2+ cm, shorter to longer than leaves. |
||||||||
Flowers | (5–)6–10(–12) mm; calyx 3–5.5 mm, tube ± sparsely strigillose or glabrous, lobes subulate; corolla yellow (sometimes banner orangish abaxially), turning orange or reddish, claws ± equaling calyx tube, banner implicate-ascending or remaining closely implicate, wings longer than keel; style corneously thickened, marked by color, straight, puberulent or glabrous. |
|||||||||
Corollas | opening. |
|||||||||
Legumes | persistent, exserted, erect or divergent, brown, straight to ± curved distally, compressed, not or slightly constricted, incompletely septate, linear-oblong, 10–35 × 2–3 mm, thinly leathery, apex initially short-beaked, dehiscent, smooth, margins smooth, thin, glabrous or ± strigose. |
20–30 × 2–3 mm. |
||||||||
Seeds | 5–10, greenish to brown, ± mottled, ovoid to cuboid or globose, rugulose or granular. |
pale greenish or buff, cuboid (rounded-oblong in cross section), usually granular, rarely rugulose. |
||||||||
2n | = 14. |
|||||||||
Acmispon strigosus |
Acmispon strigosus var. hirtellus |
|||||||||
Phenology | Flowering (late winter–)spring. | |||||||||
Habitat | Coastal ranges, washes, deserts, palm springs, ponderosa pine forests. | |||||||||
Elevation | (100–)500–2000 m. ((300–)1600–6600 ft.) | |||||||||
Distribution | sw United States; n Mexico |
CA; Mexico (Baja California) |
||||||||
Discussion | Varieties 3 (3 in the flora). D. Isely (1981) discussed the variation in Acmispon strigosus (as Lotus), distinguishing three varieties, two rather distinct but with intergrading phases, and one apparently more transitional, although distinct enough to be recognized. These varieties were only noted for California in recent treatments (for example, L. Brouillet 2012, following D. Isely 1993). Nonetheless, the typical (for example, excluding intergrading phases) varieties represent recognizable morphologies that also have geographic distinction. Specimens representing intergradation seem to occur throughout the range of overlap of these varieties, sometimes rendering determination difficult. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety hirtellus is present in the Coast Ranges and the Mojave and Sonoran deserts. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||
Key |
|
|||||||||
Source | FNA vol. 11. | FNA vol. 11. | ||||||||
Parent taxa | Fabaceae > subfam. Faboideae > Acmispon | Fabaceae > subfam. Faboideae > Acmispon > Acmispon strigosus | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Hosackia strigosa, Anisolotus strigosus, Lotus strigosus, Ottleya strigosa | Lotus hirtellus, Anisolotus hirtellus, Hosackia hirtella, H. strigosa var. hirtella, L. strigosus var. hirtellus | ||||||||
Name authority | (Nuttall) Brouillet: J. Bot. Res. Inst. Texas 2: 392. (2008) | (Greene) D. W. Taylor: Fl. Yosemite Sierra, 147, 373. (2010) | ||||||||
Web links |
|
|