Astragalus neglectus
Minnesota Bot. Stud. 1: 59. 1894.
Plants robust, 25–90 cm, strigulose; from branched, superficial caudex. Stems erect, hollow, glabrous or glabrate. Leaves 4–12 cm; stipules (1.5–)2–6 mm, membranous or thinly herbaceous; leaflet blades oblong-elliptic, oblong, or oblong-obovate to linear-oblong, (4–)7–23(–25) mm, apex obtuse to retuse-emarginate, surfaces sparsely strigulose abaxially, glabrous adaxially. Peduncles erect, (2.5–)3–7.5 cm. Racemes (6–)10–20-flowered; axis 1–4.5 cm in fruit; bracts 1–2.2 mm; bracteoles 0–2. Pedicels 1–5 mm. Flowers 11.6–15 mm; calyx 5.6–8 mm, strigulose, tube 3.7–5 mm, lobes subulate, 1.8–3 mm; corolla drying ochroleucous; keel 10.1–12.4 mm. Legumes stramineous to brownish, turning dark brown to nearly black, ± straight, 14–30 × 8–18 mm, stiffly papery, glabrous; septum to 1.5 mm wide, seed-bearing flange 0.8–1.3 mm wide. 2n = 22.
Phenology: Flowering Jun–Sep.
Habitat: Lakeshores, riverbanks, cool ravines, in shade or on limestone ledges, moist roadsides, barrens, overlying limestone pavement, dry, gravelly calcareous soils, often at edge of aspen groves.
Elevation: 150–300 m.
Distribution
Man., Ont., Mich., Minn., N.Y., N.Dak., Ohio, S.Dak., Wis.
Discussion
Astragalus neglectus may be confused with, and sometimes grows with, A. canadensis, from which it can be distinguished by several features, among them the basifixed hairs.
Astragalus cooperi A. Gray is an illegitimate name that applies here.
Selected References
None.