Flora of North America species comparison

erect or ascending, usually strigulose, rarely glabrous.

ascending, 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.

2.5–11 cm;

stipules 1.5–3 mm, papery at proximal nodes, firm at distal nodes;

leaflets 9–17, blades oblong-oblanceolate, linear-oblong, or obovate, 3–15 mm, apex obtuse or retuse, surfaces strigulose, sometimes glabrescent adaxially.

7–35-flowered, flowers ascending;

axis 3–30 cm in fruit;

bracts 1–3 mm;

bracteoles 0–2.

loosely 9–20-flowered;

axis 4.5–13 cm in fruit;

bracts 1–1.5 mm;

bracteoles 2.

strict, 6–25 cm.

incurved-ascending or divaricate, 2.5–6(–10) cm.

0.8–3.5 mm.

0.8–2 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.

6.9–7.6 mm;

calyx 3.5–4 mm, strigose, tube 2.5–2.8 mm, lobes subulate, 1–1.5 mm;

corolla ochroleucous, banner veined or suffused with purple;

banner recurved through 90°;

keel 6.8–7.7 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.

pendulous, mottled (and glaucescent) becoming stramineous and faintly purple-tinged, slightly incurved, oblong-lanceoloid, distinctly 3-sided compressed, 18–25 × 3–4.5 mm, papery, glabrous;

septum 2.4–2.7 mm wide;

stipe 3–4 mm.

14–26.

11–16.