Astragalus trichopodus var. lonchus |
Astragalus trichopodus var. trichopodus |
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ocean milkvetch, Santa Barbara milkvetch, Southern California milkvetch |
Santa Barbara milk vetch |
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Racemes | (12–)15–36-flowered; axis (2–)3.5–11 cm in fruit. |
(10–)20–50-flowered; axis (2–)3.5–13(–16) cm in fruit. |
Peduncles | (5.5–)8–20(–30) cm. |
(4–)6–26(–30) cm. |
Flowers | 11.3–19 mm; corolla rarely veined pale pink or purple. |
11.5–15.4 mm. |
Legumes | not or slightly laterally compressed, bladdery-inflated, lateral faces convexly rounded, greatly oblique, ovoid, semi-ovoid, semi-ellipsoid, or lunately so, (17–)20–40(–45) × (8–)10–18(–21) mm, sutures more convex dorsally, usually openly sulcate ventrally and straight, shallowly or low-convex, usually finely strigulose, rarely glabrous distally or throughout, hairs often white, sometimes fuscous; gynophore mostly 8–12 mm. |
not or slightly compressed, bladdery-inflated or strongly tumid, lateral faces convexly rounded, symmetric or, sometimes, strongly oblique, fusiform-ellipsoid or semi-ellipsoid, (13–)15–35 × (5–)6–10(–13) mm, sutures equally convex or dorsally low-convex, ventrally straight, usually glabrous, very rarely strigulose; gynophore 6.5–17 mm, minutely pubescent. |
2n | = 22. |
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Astragalus trichopodus var. lonchus |
Astragalus trichopodus var. trichopodus |
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Phenology | Flowering Feb–Jun (fall–winter). | Flowering Mar–Jun (fall–winter). |
Habitat | Coastal bluffs, mesas, and sandy fields near the sea, shale cliffs or descending to shingle banks behind barrier beaches. | Shale or sandstone outcrops on sea bluffs or low grassy hills. |
Elevation | 0–80(–500) m. (0–300(–1600) ft.) | 10–90(–700) m. (0–300(–2300) ft.) |
Distribution |
CA; Mexico (Baja California) |
CA |
Discussion | Variety lonchus has a largely coastal distribution from Morro Bay in San Luis Obispo County southward to the Santa Maria Plains in northern Baja California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Variety trichopodus is known from three restricted areas in southern California from Kern and San Luis Obispo counties southward to San Diego County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. leucopsis var. lonchus | A. trichopodus var. capillipes |
Name authority | (M. E. Jones) Barneby: Mem. New York Bot. Gard. 13: 821. (1964) | unknown |
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