Flora of North America species comparison

erect or ascending, usually strigulose, rarely glabrous.

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.

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.

7–35-flowered, flowers ascending;

axis 3–30 cm in fruit;

bracts 1–3 mm;

bracteoles 0–2.

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

axis 0.2–1 cm in fruit;

bracts 2.5–6 mm;

bracteoles 0–2.

strict, 6–25 cm.

recurved in fruit, 1.5–11 cm.

0.8–3.5 mm.

1.2–4 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.

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.

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.

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.

14–26.

24–38.