Flora of North America species comparison

usually erect or ascending, sometimes decumbent, rarely prostrate, usually sparsely strigulose, sometimes pilosulous.

decumbent to erect, sparsely strigulose.

2–9 cm;

stipules connate-sheathing and papery at proximal nodes, connate or distinct and herbaceous or submembranous at distal nodes, usually black or blackish when dry, 1.5–7 mm;

leaflets 11–21, blades narrowly oblong to elliptic, linear, oblanceolate, or obovate, 3–24 mm, apex acute to obtuse, mucronate, or emarginate, surfaces sparsely strigose abaxially, glabrous adaxially.

3–10 cm;

stipules distinct, 1–3 mm, papery at proximal nodes, submembranous at distal nodes;

leaflets (11–)15–23, blades oblanceolate to elliptic or narrowly oblong to linear, 3–11 mm, apex obtuse to retuse or emarginate, surfaces glabrous or strigose on midrib abaxially and margins.

(1–)3–23-flowered, often paired in leaf axils, flowers ascending;

axis 0.5–11 cm in fruit;

bracts 0.5–2.7 mm;

bracteoles 0–2.

loosely 5–15-flowered, flowers ascending to declined;

axis 1–5 cm in fruit;

bracts 1–2.2 mm;

bracteoles 0–2.

narrowly ascending or incurved, 0.2–4 cm.

incurved-ascending, 1.5–5 cm.

0.7–3.2 mm.

1–3.4 mm.

6–9(–11) mm;

calyx 2.6–5.2 mm, strigose, tube 2–2.7 mm, lobes subulate, 0.7–2.5 mm;

corolla usually white to ochroleucous, sometimes pink-purple;

banner recurved through 40°;

keel 4.3–5.7(–6.5) mm.

5–8 mm;

calyx campanulate, 2.9–4.6 mm, strigose, hairs usually black, sometimes also white, tube 1.7–2.3 mm, lobes subulate, 1–2.4 mm;

corolla whitish or ochroleucous;

banner abruptly recurved through 100–110°;

keel 3.9–4.6 mm, apex bluntly deltate, often obscurely beaklike.

pendulous, green, often brown- or red-mottled, becoming brown or black, straight or curved, ellipsoid to oblong, laterally flattened, 7–16 × 2.5–4.5 mm, papery, usually glabrous, sometimes strigose;

stipe 0.6–6 mm.

deciduous from receptacle, pendulous to spreading, green, sometimes purple-mottled, becoming stramineous, straight, subsymmetrically ovoid-ellipsoid, bladdery-inflated, slightly obcompressed, 15–28 × 9–17 mm, thin becoming papery-membranous, translucent, glabrous;

sessile or on a gynophore about as broad as long.

3–9.

12–17.

= 16, 24.