Astragalus trichopodus var. lonchus
Astragalus trichopodus var. antisellii
ocean milkvetch, Santa Barbara milkvetch, Southern California milkvetch
antisell's milkvetch or rattleweed
(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.
(5.5–)8–20(–30) cm.
(4–)6–26(–30) cm.
11.3–19 mm;
corolla rarely veined pale pink or purple.
(11.4–)12.4–16.7 mm.
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.
usually laterally compressed, symmetric (straight) or rarely somewhat oblique distally, oblanceoloid or linear-ellipsoid, (15–)20–36(–40) × 4.8–9(–11) mm, keeled by both sutures, usually glabrous, rarely finely strigulose;
gynophore (6–)7–13(–15) mm.
= 22.
Astragalus trichopodus var. lonchus
Astragalus trichopodus var. antisellii
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 antisellii occurs from Kern and San Luis Obispo counties southward to western Riverside county.
Variety antisellii is a relatively tall taxon with ample leaves and elongate, loosely-flowered racemes, which do not much elongate in fruit. The long-stipitate, pendulous, laterally compressed legumes bicarinate by the sutures are diagnostic for this variety.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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