Flora of North America species comparison

prostrate or decumbent to ascending, densely villous-tomentose.

prostrate to ascending, 2–7 cm underground, strigulose-cinereous.

5–14 cm;

stipules distinct, 3–6 mm, herbaceous becoming membranous;

leaflets (7–)15–21, blades oval-obovate, 6–17 mm, apex obtuse to subacute, surfaces villous-tomentose.

reduced to phyllodia or terminally expanded rachis, 2.5–13 cm;

stipules distinct throughout, 2–7 mm, papery at proximal nodes, firm at distal nodes;

leaflets (1 or)3–7, blades linear-filiform or linear-involute, continuous with rachis, 3–17 mm, apex acute, surfaces strigulose.

(10–)20–40-flowered, flowers spreading;

axis (1–)1.5–12 cm in fruit;

bracts 2–5 mm;

bracteoles 0.

(3–)7–20(–35)-flowered, flowers declined or nodding;

axis 2–18(–33) cm in fruit;

bracts 1.2–2.6 mm;

bracteoles 0 or 2.

erect or incurved-ascending, 5–12 cm.

ascending, 3.5–7.5 cm.

0.5–1 mm.

2–8 mm.

9–12 mm;

calyx broadly campanulate, 6.6–7.8 mm, silky-villous, tube 3.9–4.5 × 3.5–4.1 mm, lobes narrowly subulate, 2.7–3.5 mm, somewhat accrescent, covering most or all of mature legume;

corolla pale yellow, drying ochroleucous, pubescent abaxially;

banner recurved through 50°;

keel 7.1–8.2 mm, apex obtuse-deltate.

8–9 mm;

calyx campanulate, 4.6–6 mm, strigulose, tube 3.8–4.1 mm, lobes subulate or triangular-subulate, 0.8–1.9 mm;

corolla ochroleucous, immaculate;

banner recurved through 100–130°;

keel 8 mm, apex bluntly triangular.

spreading or somewhat declined, straight, obliquely ovoid, obscurely 3-sided compressed, 4.5–6 × 3 mm, stiffly papery, tomentulose, hairs 1+ mm; contracted basally into pseudostipe, 0.4–0.6 mm.

declined or pendulous, stramineous, straight or nearly so, narrowly lanceoloid-oblong, strongly laterally compressed, 25–40 × 4–5.5 mm, papery, strigulose;

sessile.

6–8.

14–18.