Flora of North America species comparison

prostrate or decumbent to ascending, densely villous-tomentose.

prostrate or decumbent to erect, strigose to villous.

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.

2.5–12(–14) cm;

stipules (2.5–)3–8(–9) mm, submembranous becoming papery-scarious;

leaflet blades narrowly to broadly elliptic, oblanceolate, or obovate-cuneate, 4–20(–26) mm, apex acute to obtuse, surfaces strigulose, pilosulous, or hirsute, sometimes glabrescent or glabrous adaxially.

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

axis (1–)1.5–12 cm in fruit;

bracts 2–5 mm;

bracteoles 0.

chasmogamous (3–)5–17-flowered, ;

axis 0.7–2.5 cm in fruit;

bracts 1.8–5 mm;

bracteoles 0; cleistogamous 1–3-flowered, very short.

dimorphic, pedunculate in chasmogamous flowers, sessile in cleistogamous flowers, on same or different plants.

erect or incurved-ascending, 5–12 cm.

ascending, chasmogamous (2–)4–10(–12) cm, cleistogamous 0–2 cm.

0.5–1 mm.

0.5–2.4 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.

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.

(of both) ascending or spreading (humistrate), stramineous or purplish brown, usually straight or incurved, rarely decurved, ovoid-acuminate, ovoid-, lanceoloid-, or narrowly oblong-ellipsoid, abaxially or 3-sided compressed, 12–37 × 5–8 mm, somewhat fleshy becoming leathery or stiffly papery, strigulose, villosulous, or long-villous.

6–8.

flowers 8.5–14 mm;

calyx shallowly campanulate, 5–9.7 mm, strigose, tube 3.2–4.5 mm, lobes lanceolate, 2.2–5.2 mm;

corolla greenish white, ochroleucous, or tinged or veined lavender or purple, keel without darker apex;

banner recurved through 45+°;

keel 6.6–9.8 mm.

flowers 4.3–7.2 mm;

calyx shorter than in chasmogamous flowers at anthesis, accrescent in fruit;

corolla whitish, drying yellowish, petals not expanding, much shorter than calyx lobes;

banner little recurved;

keel 4.2–6 mm.

= 26.