Flora of North America species comparison

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

decumbent to incurved-ascending, strigulose to pilose.

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.

(5–)8–23 cm;

stipules (3–)6–12 mm, submembranous;

leaflets (19–)23–39(–43), blades usually lanceolate-ovate or rhombic-elliptic, sometimes oblong-obovate, (3–)5–20 mm, apex usually acute or subacute, sometimes obtuse or emarginate, surfaces strigulose to pilose abaxially, glabrescent or glabrate adaxially.

(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.

(10–)12–24-flowered, flowers nodding, secund, retrorsely imbricate;

axis (3–)5–12 cm in fruit;

bracts 3–10 mm;

bracteoles 0–2.

ascending, 3.5–7.5 cm.

incurved-ascending, (5–)6–15 cm.

2–8 mm.

1–3.5 mm.

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.

15.7–19.2 mm;

calyx cylindric to broadly campanulate, 9.6–13 mm, strigulose, tube 6.8–9.4 mm, lobes lanceolate or triangular-lanceolate, 2.8–4.4 mm;

corolla dull pinkish lavender, greenish purple, or bright magenta-purple;

banner recurved through 45°;

keel 11.3–12.7 mm.

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

sessile.

loosely pendulous (from ascending peduncles) or ascending (and humistrate), stramineous then brownish, gently incurved, obliquely oblong-ellipsoid, obcompressed, (17–)20–33 × (4–)7–11 mm, ± unilocular, fleshy becoming leathery, strigulose.

14–18.

28–33.

= 22.