Flora of North America species comparison

erect or ascending, densely silky-strigulose.

prostrate or decumbent to erect, strigose to villous.

(5–)7–17(–20) cm;

stipules connate-sheathing at proximal nodes, distinct at distal nodes, 2–14 mm, scarious;

leaflets (17–)21–35, blades linear, linear-oblong, -elliptic, -lanceolate, or -oblanceolate, (3–)6–26 mm, apex obtuse and apiculate or emarginate, surfaces strigulose, sometimes glabrous adaxially.

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.

15–45-flowered, flowers nodding;

axis (5–)7–17 cm in fruit;

bracts 1.5–4 mm;

bracteoles 0–2.

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, 6–24 cm.

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

1.2–5 mm.

0.5–2.4 mm.

12.6–17.6 mm;

calyx (6.5–)8–11.4 mm, densely silky-strigulose, hairs white, tube 5–7.2 mm, lobes lanceolate-subulate, (1.5–)2–4.2 mm;

corolla ochroleucous, immaculate;

banner gently and slightly recurved;

keel 11.5–14.7 mm.

spreading to pendulous, stramineous, obliquely ovoid-ellipsoid or semi-ovoid, bladdery-inflated, somewhat compressed laterally, (20–)25–43 × 13–18 mm, thin becoming papery-membranous, translucent, lustrous, sparsely strigulose;

stipe filiform, 14–40 mm, pubescent.

(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.

(16–)18–30.

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.

= 22.

= 26.