Flora of North America species comparison

erect or ascending, sparsely strigulose.

sprawling, slender and delicate, forming entangled clumps, strigulose, green.

(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.

2.5–10 cm;

stipules connate-sheathing at proximal nodes, distinct at distal nodes, 2–5 mm, thinly herbaceous or submembranous;

leaflets (9–)15–23(–27), blades narrowly elliptic, lanceolate, or ovate, 3–15 mm, apex subacute or obtuse, surfaces sparsely strigulose abaxially, glabrate adaxially.

(5–)10–30-flowered;

axis (1.5–)3–19 cm in fruit;

bracts 1–2 mm;

bracteoles 2.

loosely (1 or)2 or 3(–5)-flowered;

axis 0.2–1 cm in fruit;

bracts 1.3–3.3 mm;

bracteoles 0–2.

(2–)4–11 cm.

ascending, 2–2.5 cm, shorter than leaves.

0.6–1.5 mm.

1.2–2.1 mm, 1.4–2.5 mm in fruit.

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.

8.5–11.8 mm;

calyx campanulate to subcylindric, 4–5.7 mm, densely to sparsely strigulose, tube 2.7–3.4 mm, lobes subulate or lanceolate-subulate, 1.1–2.5 mm;

corollas white, keel apex maculate with dull bluish purple;

banner recurved through 45°;

keel 6–7.5 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, slightly decurved, oblong- or lanceoloid-ellipsoid, obcompressed and bluntly 3-sided, faces low-convex, 8–14 × 2.5–4 mm, papery, translucent, sparsely strigulose, hairs 1.8–2.1 mm, unilocular;

stipe 0–1.5 mm.

12–16.

6–10.