Flora of North America species comparison

prostrate or decumbent, 0–7 cm underground, hirsute.

erect or incurved-ascending, diffuse, glabrous or glabrate.

(1.5–)3–10(–12) cm;

stipules rarely connate at proximal nodes, 2–8.5 mm, mostly thinly herbaceous, sometimes papery at proximal nodes;

leaflets (3–)7–15, blades thin, obovate, broadly oblanceolate, or suborbiculate, (2–)5–22 mm, larger ones pinnately veined, apex cuneate to emarginate, surfaces villous-pilose abaxially, glabrous adaxially.

3.5–15 cm;

stipules 2–7 mm, papery at proximal nodes, herbaceous at distal nodes;

leaflets (7 or)9–25, blades obovate, suborbiculate, obcordate to oblong, narrowly elliptic, lanceolate, or linear, 6–28 mm, apex retuse-emarginate to rounded, obtuse, acute, or truncate, sometimes apiculate, surfaces glabrous, hairs sometimes on margins or midrib.

densely (5–)8–24-flowered;

axis 1–3(–4) cm in fruit;

bracts (2–)2.5–5 mm;

bracteoles 0.

3–24-flowered, flowers ascending;

axis 1–20 cm in fruit;

bracts 1.5–4 mm;

bracteoles 2.

incurved-ascending, (2–)3–11 cm.

erect-ascending, 2–15 cm.

0.7–2.5 mm.

1–5.5 mm.

8.8–11.2 mm;

calyx 5.5–7.8(–8.2) mm, pilose, tube 2.7–3.7 mm, lobes lanceolate to lanceolate-attenuate, (2.7–)3–4.5(–5) mm;

corolla pale yellow to greenish ochroleucous, fading yellowish, keel immaculate;

banner recurved through 50–80°;

keel 7.2–9.7 mm, apex narrowly deltate, acute or subacute, often beaklike.

14–24 mm;

calyx purple, 6.4–12.3 mm, sparsely strigose, tube 5.1–9.7 mm, lobes subulate, 1.3–2.6 mm;

corolla pink-purple, bicolored, or white to pale greenish yellow and, sometimes, modestly suffused with purple;

banner recurved through 40–45°;

keel (11.1–)11.5–19 mm, apex blunt.

ascending or spreading (humistrate), pale yellow green becoming stramineous then brownish, incurved or ± straight, slenderly lunate-ellipsoid or semi-ellipsoid, bluntly 3-sided compressed, (15–)17–25 × (2.8–)3.2–5.2 mm, subunilocular, thinly fleshy becoming stiffly papery, densely hirsute, hairs spreading-ascending, to 1.2–1.8 mm, lustrous white;

gynophore to 0.8 mm.

dehiscent on plant, erect to ascending, green or red-dotted becoming stramineous, straight or slightly incurved, cylindroid, ellipsoid, ovoid, or oblong-ellipsoid, inflated, 12–34 × 6–13 mm, unilocular, stiffly papery to leathery, glabrous or puberulent;

stipe 0–7 mm.

12–18.

20–44.