Flora of North America species comparison

erect or ascending, usually strigulose, rarely glabrous.

erect or ascending, densely silvery white-strigulose.

distally unifoliolate or reduced to phyllodia, 2–10 cm;

stipules connate-sheathing and papery-scarious at proximal nodes, distinct and herbaceous at distal nodes, 1.5–6.5 mm;

leaflets (0 or 1–)3–13, blades linear-filiform to oblong, 3–30 mm, margins involute, apex obtuse to acute, surfaces strigose abaxially, strigose or glabrous adaxially;

terminal leaflet of compound leaves sometimes decurrent distally, not jointed to rachis.

(2.5–)5–15(–16.5) cm;

stipules 1.5–5 mm, papery;

leaflet blades linear or linear-oblong, (3–)5–25(–34) mm, apex truncate-emarginate or subacute, surfaces sparsely strigulose abaxially, densely silvery white-strigulose adaxially.

7–35-flowered, flowers ascending;

axis 3–30 cm in fruit;

bracts 1–3 mm;

bracteoles 0–2.

(4 or)5–20(–28)-flowered;

axis (2–)3–13 cm in fruit;

bracts 0.7–2.5 mm;

bracteoles 2.

strict, 6–25 cm.

erect, (5–)7–20 cm.

0.8–3.5 mm.

0.9–3 mm.

(13–)14–20 mm;

calyx 4.6–8 mm, strigose, tube 4.1–6.4 × (2.6–)3–3.9 mm, lobes subulate, 0.5–2 mm;

corolla pink-purple and wing tips white, or greenish yellow or whitish;

keel (9.5–)10.5–13.5 mm.

15–22 mm;

calyx 5.5–9.5 mm, strigose, tube 3.6–5 mm, lobes subulate, (1.5–)1.8–4.3 mm;

corolla keel 10.7–15.3 mm.

erect, green sometimes purple-mottled becoming stramineous, straight or slightly incurved, oblong, slightly compressed laterally, bicarinate, 13–25 × 3.7–9 mm, stiffly leathery to somewhat woody, glabrous or strigose;

sessile.

brownish or stramineous, strongly laterally compressed, 12–28 × 4–7.5 mm, fleshy becoming leathery or subligneous, glabrous;

septum 3.5–6 mm wide; stipitate (stipe 4–8 mm).

14–26.