Flora of North America species comparison

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

incurved-ascending, decumbent, or prostrate, usually sparsely to densely strigulose or strigose-pilosulous, rarely silky-villosulous.

(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.

1–5.5 cm;

stipules connate-sheathing and papery at proximal nodes, mostly connate and herbaceous at distal nodes, turning black in drying, 2–5 mm;

leaflets (5 or)7–13, blades elliptic, linear-elliptic, lanceolate, oblanceolate, or narrowly obovate, 2–12 mm, apex usually acute, sometimes obtuse or retuse and apiculate, surfaces strigose abaxially, silky-strigulose, villosulous, glabrescent, or glabrous adaxially.

densely (5–)8–24-flowered;

axis 1–3(–4) cm in fruit;

bracts (2–)2.5–5 mm;

bracteoles 0.

3–7(–11)-flowered, flowers spreading;

axis 0.5–3 cm in fruit;

bracts 0.5–2.7 mm;

bracteoles 0–1.

incurved-ascending, (2–)3–11 cm.

0.2–4 cm.

0.7–2.5 mm.

1.5–3.5(–4.2) 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.

(4.3–)5.2–9.3 mm;

calyx turbinate-campanulate to campanulate, 2.4–4.5 mm, strigose, tube 1.4–2.2 mm, lobes setaceous, (0.8–)1.3–2.5 mm;

corolla pink-purple, lilac, or whitish, sometimes lilac-tipped or -tinged, banner sometimes purple-veined, keel maculate;

banner abruptly recurved through 90°;

keel (2.9–)3.4–5.6 mm.

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.

deflexed or declined, stramineous, straight, ellipsoid, obovoid-ellipsoid, oblong-ellipsoid, or linear, laterally flattened, 3.5–12 × 1.8–3.5 mm, bicarinate, papery, strigose;

stipe 0–0.3 mm.

12–18.

(4 or)5–8(–11).