Flora of North America species comparison

erect or ascending, sparsely strigulose.

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

(3–)4–12 cm;

stipules connate and scarious-papery at proximal nodes, distinct and herbaceous at distal nodes, 1.5–5 mm;

leaflets (17–)21–29, blades flat or loosely folded, oblong-oblanceolate or elliptic, 3–13 mm, apex obtuse to subacute, surfaces sparsely strigulose abaxially, glabrate or glabrous adaxially.

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.

(5–)10–30-flowered;

axis (1.5–)3–19 cm in fruit;

bracts 1–2 mm;

bracteoles 2.

(4–)8–22(–33)-flowered;

axis (1–)2–6(–7.5) cm in fruit;

bracts 1–2.2 mm;

bracteoles 0.

(2–)4–11 cm.

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

0.6–1.5 mm.

1–2 mm.

5.8–8 mm;

calyx marcescent, 3.4–4.3 mm, strigulose, hairs black and/or white, tube 2.1–2.7 mm, lobes subulate, 1–2 mm;

corolla whitish or, sometimes, greenish ochroleucous, immaculate;

banner abruptly incurved through 90°;

keel 4.2–5.6 mm.

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.

stramineous, straight or slightly incurved or decurved, linear-oblong or linear-oblanceolate, 3-sided compressed, 15–30 × (2.5–)3–4 mm, bilocular, papery, glabrous;

valves inflexed as complete septum 1.4–1.9 mm wide;

stipe 1.5–2.5 mm.

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.

12–16.

10–13.