Flora of North America species comparison

erect to ascending, strigulose.

sprawling-decumbent, 1–20 cm underground, sparsely to densely pilose.

4–10(–13) cm;

stipules connate-sheathing and papery-membranous at proximal nodes, connate or distinct and herbaceous at distal nodes, 0.5–4.5 mm;

leaflets 13–21, blades linear to linear-filiform, (5–)7–15(–17) mm, apex acute to obtuse, surfaces strigulose or adaxially glabrous;

terminal leaflet sometimes decurrent distally, not jointed to rachis.

2.5–11.5(–15) cm;

stipules distinct throughout, 1.5–7 mm, scarious at proximal nodes, herbaceous at distal nodes; short-petiolate or subsessile;

leaflets (11–)15–29, blades usually broadly to narrowly elliptic or oblong, rarely oblong-obovate, (2–)4–13(–17) mm, apex usually obtuse or acute, rarely truncate-emarginate, surfaces sparsely pilose or glabrescent, sometimes glabrous adaxially.

becoming loosely (3–)4–14(–18)-flowered;

axis 1–8.5 cm in fruit;

bracts 0.8–1.5 mm;

bracteoles 0.

(3–)6–15-flowered, flowers ascending or spreading;

axis 0.7–2.5(–3.2) cm in fruit;

bracts (2–)3–7.5 mm;

bracteoles (0 or)2.

erect or incurved-ascending, 5–15(–22) cm.

ascending, (1–)2–8(–9) cm.

ascending, 1.2–3.5 mm.

1.4–2.8 mm.

12.5–15.5 mm;

calyx campanulate, obliquely cuneate, 4–6.7 mm, silky-villous, hairs white, sometimes also black, tube 3.2–5.8 mm, lobes triangular, 0.5–1 mm;

corolla white, creamy white, or purplish, banner recurved through 40°;

keel 8–11 mm, apex bluntly deltate or triangular, often slightly beaklike.

(14.3–)16.5–20(–21.5) mm;

calyx purplish, deeply campanulate, 7.8–12.2(–13.7) mm, pilose or shortly pilosulous, tube 5.4–7.8 mm, lobes subulate or lanceolate-subulate, (2–)2.6–4.7(–6.1) mm;

corolla pink-purple or lilac-purple, sometimes pale, wings and keel maculate;

keel (11.5–)12–15.5(–16) mm.

pale green, sometimes also red-mottled, becoming stramineous, straight or slightly curved, obliquely obovoid, semi-obovoid, or semi-ellipsoid, bladdery-inflated, 20–48 × 5–16(–22) mm, papery-membranous, translucent, apex differentiated into broad, low-deltoid beak, glabrous;

stipe (5–)8–12 mm.

long persisting then finally disjointing from receptacle, green, often purple-mottled, straight, obliquely ovoid-oblong or subglobose, ± obcompressed, 10–17(–20) × 10–13 mm, bilocular, fleshy becoming stiffly leathery, mesocarp 1.5–2 mm thick, not separated into 2 layers, strigulose or pilosulous.

10–20.

(28–)32–48(–52).