Flora of North America species comparison

erect or ascending, usually strigulose, rarely glabrous.

prostrate, gray-pilosulous.

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.

0.8–2.6 cm;

stipules distinct, 1–2.5 mm;

leaflets 7 or 9, blades folded, obovate-cuneate, 2–6 mm, apex emarginate, surfaces pilosulous.

7–35-flowered, flowers ascending;

axis 3–30 cm in fruit;

bracts 1–3 mm;

bracteoles 0–2.

(3 or)4–7(or 8)-flowered, flowers declined;

axis 0.3–1 cm in fruit;

bracts 0.5–1.2 mm;

bracteoles 0.

strict, 6–25 cm.

0.3–0.7 cm, often paired at a node.

0.8–3.5 mm.

0.8–1.8 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.

4.8–5.3 mm;

calyx obconic-campanulate, 3.6–4.2 mm, white-pilosulous, tube 1.3–1.8 mm, lobes slenderly subulate, 1.3–1.8 mm;

corolla whitish, banner tinged or veins faint lilac;

banner recurved through 90°;

keel 3.3–3.6 mm, apex obtuse.

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.

spreading-declined, lunately ellipsoid-obovoid, laterally compressed, somewhat depressed but not grooved dorsally, lateral faces with shallow longitudinal groove, 4.5–5 × 2–2.5 mm, unilocular, sparsely pilosulous.

14–26.

2 or 3.