Flora of North America species comparison

erect or ascending, sparsely strigulose.

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

2–15 cm;

stipules 1.5–5 mm, papery-scarious at proximal nodes, subherbaceous at distal nodes;

leaflet blades linear, linear-oblanceolate, or filiform, 5–30 mm, apex acute, subacute, or, often, mucronate, surfaces silvery-canescent, more densely so adaxially;

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.

(3–)5–25-flowered;

axis 2–20 cm in fruit;

bracts 1.5–4 mm;

bracteoles 2.

(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, 3–25 cm.

ascending, (1–)2–8(–9) cm.

0.7–4 mm.

1.4–2.8 mm.

14.5–26 mm;

calyx 7.9–13.7 mm, strigulose, tube 6.5–10 mm, lobes lanceolate-subulate, 1.5–4.3 mm;

corolla keel 12.8–18.5 mm.

(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.

firmly attached to receptacle, falling while still attached to pedicel, stramineous, straight or slightly incurved, obliquely ovoid or plumply oblong, 15–31 × 5–12 mm, fleshy becoming woody, glabrous;

septum (0–)1–2.5(–4) mm wide.

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.

(28–)32–48(–52).