Flora of North America species comparison

usually ascending, rarely decumbent, 0–2 cm underground, strigulose to pilose-villosulous.

prostrate or decumbent, glabrate.

2.5–12 cm;

stipules 1.5–6 mm, papery at proximal nodes, herbaceous or submembranous at distal nodes;

leaflets (5 or)7–17, blades lanceolate to oblong, (3–)5–30(–32) mm, apex obtuse or emarginate, surfaces usually strigulose, sometimes villous-pilosulous, cinereous, glabrate, or glabrous abaxially, glabrous, glabrescent, or sparsely strigose adaxially.

5–12(–30) cm;

stipules distinct throughout, subulate to ovate-triangular, 2.4–6 mm, usually thinly herbaceous, sometime papery at proximal nodes;

leaflets (9–)15–27, blades firm, oblong-obovate or cuneate-obcordate, 2–7(–11) mm, veins not apparent, apex retuse or obcordate with small, blunt mucro, surfaces glabrous, sparsely strigose on midrib abaxially, glabrous adaxially and frequently on margins.

(3–)5–25(–33)-flowered;

axis 1–18(–20) cm in fruit, elongating little after flowering, arising distal to middle of stem;

bracts 1–3.5 mm;

bracteoles usually 0.

5–15(–18)-flowered;

axis 1–4.5(–6) cm in fruit;

bracts 1.2–2.5(–3.5) mm;

bracteoles 0–2.

incurved-ascending or erect, 3.5–21(–23) cm, usually surpassing subtending leaf, together with racemes usually shorter than stems.

incurved-ascending, (1.5–)3–10(–12.5) cm.

0.5–3 mm.

1–2.8 mm.

(6–)7.2–11.5 mm;

calyx 4–6.8 mm, strigulose, tube 3.2–4.5 mm, lobes subulate, 0.7–2.3 mm;

corolla usually purple, pink-purple, pink, lilac, lavender, or whitish, sometimes whitish with maculate keel;

wing apex obtuse;

keel 5.4–7.9 mm, shorter than wings.

8.5–11 mm;

calyx 4.7–6.5 mm, strigulose, tube 2.7–3.5 mm, lobes lanceolate to broadly subulate, (1.8–)2.2–2.8 mm;

corolla pinkish or bluish lilac, soon fading;

banner recurved through 45–50°;

keel 6.5–8 mm, apex round.

pendulous, green or purplish, straight or slightly decurved, ellipsoid, obtusely 3-sided, faces slightly convex, flattened or depressed but not sulcate abaxially, 13–25 × 3.5–5.5 mm, subunilocular or semibilocular, papery-membranous, sparsely strigulose, hairs black or black and white;

valves inflexed as hyaline septum 0.2–2 mm wide;

stipe (0.5–)1.5–6.5 mm.

ascending or spreading (humistrate), green or purple-tinged becoming stramineous or brownish, incurved, lunately semi-ellipsoid to semi-obovoid, somewhat laterally compressed, (13–)16–25(–32) × 4–7.5 mm, subunilocular, thinly fleshy becoming stiffly papery, coarsely reticulate, glabrous;

gynophore to 0.6 mm.

6–11.

13–18.