Flora of North America species comparison

decumbent to ascending, 1.5–10(–18) cm underground, strigulose or pilosulous.

ascending, decumbent, or sprawling, silky-strigose, villous, or villous-tomentose.

1.5–8(–11) cm;

stipules connate at proximal nodes, sometimes connate to 1/2 their length at distal nodes, 1.5–5 mm, papery at proximal nodes to thinly herbaceous at distal nodes;

leaflets (7–)11–19(–23), blades broadly obovate, obovate-cuneate, broadly oblong-elliptic, or suborbiculate, (1.5–)3–12(–17) mm, apex retuse, surfaces sparsely strigulose or pilosulous abaxially, glabrous, glabrate, or strigulose adaxially.

(1–)2–7(–10) cm;

stipules clasping with margins touching but distinct or shortly connate at proximal nodes, distinct at distal nodes, (1–)2–7(–11) mm, often veined, semileathery;

leaflet blades linear, lanceolate, oblong, elliptic, or elliptic-oblanceolate, 3–33(–35) mm, apex acute, subacute, or obtuse, surfaces glabrous, glabrate, or pubescent.

(4–)8–22(–33)-flowered;

axis (1–)2–6(–7.5) cm in fruit;

bracts 1–2.2 mm;

bracteoles 0.

densely or loosely 6–40-flowered;

axis 1.5–15 cm in fruit, elongating little after flowering;

bracts 1.2–5 mm;

bracteoles 0.

incurved-ascending, (1–)1.5–8.5 cm, equal to or shorter than subtending leaf.

usually erect, rarely humistrate in fruit, (2–)2.5–15 cm, equal to or longer than subtending leaf, together with racemes usually shorter than stems.

1–2 mm.

0.8–2.2 mm 1.2–3.5 mm in fruit.

6.5–7.8 mm;

calyx campanulate or turbinate-campanulate, 3.2–4.5 mm, strigulose, hairs black, white, or fuscous, tube 2.2–2.7 mm, lobes subulate, 1–1.8 mm;

corolla whitish tinged with dull lilac;

banner recurved through 85°;

keel 4.4–6 mm.

7–13.8(–14.5) mm;

calyx 3.7–6.4 mm, villous or strigulose, tube 2.4–5 mm, lobes subulate, (1–)1.1–4 mm;

corolla white to purplish or creamy white;

wing apex bidentate;

keel (6.1–)6.7–9.6 mm, shorter than wings.

stramineous, straight or slightly arched downward, oblong or clavate-ellipsoid, obcompressed, (7–)9–15 × 3–6 mm, ± bilocular, papery, strigulose or villosulous;

valves inflexed as partial or nearly complete septum 0.8–1.3 mm wide;

stipe obscure.

green, often with red or purple, becoming stramineous, ± straight or slightly curved abaxially, convex adaxially, not sulcate, obliquely ellipsoid, semi-ellipsoid, or narrowly oblong, laterally compressed, 10–30 × 3–9(–11) mm, papery, translucent, usually glabrous, sometimes strigose, hyaline septum 0–0.6 mm wide;

stipe 2.5–8[–10] mm.

10–13.

8–16.