Flora of North America species comparison

prostrate to decumbent, finely cinereous, glabrous, or glabrate.

spreading to ascending, erect when young, canescent-tomentulose, distinctly woody when over-wintering.

2–8 cm;

stipules 2–6 mm, membranous or thinly herbaceous;

leaflets (7 or)9–19(or 21), blades obovate to oblong or oblanceolate to elliptic, 3–18 mm, apex truncate to retuse, obtuse, or mucronate, surfaces sparsely strigose abaxially, usually glabrous adaxially.

2–8 cm;

stipules 2–5 mm, papery at proximal nodes;

leaflets 11–25, blades oblong-obovate, -elliptic, or -oblanceolate, (1.5–)3–12 mm, apex obtuse or retuse, surfaces villosulous.

7–17-flowered, flowers ascending to spreading;

axis 0.5–4.5 cm in fruit;

bracts 1–3 mm;

bracteoles 2.

densely (15–)20–30-flowered;

axis 2–4 cm in fruit;

bracts 1.5–3 mm;

bracteoles 0–2.

ascending or incurved, 1–4.5 cm.

ascending, sometimes humistrate in fruit, 6–12 cm.

0.3–2 mm.

0.5–2 mm.

9–15.5 mm;

calyx shortly cylindric, (3.3–)5–8 mm, strigose, tube 2.6–5 mm, lobes subulate, (0.6–)1–3 mm;

corolla usually purple, lilac, or whitish, rarely cream (concolorous), sometimes keel tips purple;

banner recurved through 45°;

keel 7.5–12 mm.

10.6–12.7 mm;

calyx campanulate, 5.7–6.4 mm, villosulous, tube 3.8–4.5 mm, lobes broadly subulate, 1.4–2.4 mm;

corolla pale yellow, concolorous;

keel 9–10 mm.

disjointing from receptacle when mature, ascending to declined, green, often red-mottled, becoming stramineous or purplish, curved through 0.25–0.5+ spiral, obliquely lanceoloid, dorsiventrally or 3-sided compressed, (20–)25–40 × (2.5–)3–8.5 mm, unilocular to semibilocular, fleshy becoming leathery or stiffly papery, strigose;

sessile.

brown-stramineous, lunate, obliquely narrow-ellipsoid, 3-sided compressed, 14–20 × 3–5 mm, thinly fleshy becoming stiffly papery, glabrous;

septum 1–1.3 mm wide;

stipe 4.5–9.5 mm.

14–30.

16–20.