Flora of North America species comparison

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

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.

3–20 cm;

stipules 5–15 mm;

leaflets 5–11(or 13), blades lanceolate to elliptic or obovate, 6–25 mm, apex acute, surfaces densely strigose.

(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.

(4 or)5–8-flowered, flowers erect-ascending;

axis 0.2–1 cm in fruit;

bracts 2.5–6 mm;

bracteoles 0–2.

ascending, 3.5–7.5 cm.

recurved in fruit, 1.5–11 cm.

2–8 mm.

1.2–4 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.

17.5–23 mm;

calyx cylindric, (8.5–)9.5–14 mm, loosely strigulose, tube 7–11 mm, lobes linear-subulate, 1–3.5 mm;

corolla ochroleucous or greenish white, often tinged faintly purplish, keel tip purple;

banner recurved through 35–45°;

keel (14–)15–18.5 mm.

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

sessile.

ascending (humistrate in fruit), reddish to stramineous, incurved, plumply ovoid, inflated, moderately obcompressed, (15–)17–23 × 10–15 mm, unilocular, leathery, hirsute, hairs lustrous, to 2+ mm.

14–18.

24–38.