Flora of North America species comparison

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

erect or ascending, 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.

distally (rarely all) unifoliolate or reduced to phyllodia, 3–12 cm;

stipules connate-sheathing and papery-membranous at proximal nodes, distinct and herbaceous at distal nodes, 3.5–5 mm;

leaflets (0 or 1–)3–9, blades obovate or linear, 2–12 mm, apex obtuse to acute, surfaces sparsely strigulose;

terminal leaflet of compound leaves decurrent, not jointed to rachis.

(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 3–10-flowered, flowers ascending;

axis 1.5–9(–12) cm;

bracts 2–3 mm;

bracteoles 1 or 2.

narrowly ascending or incurved, 0.2–4 cm.

erect or incurved-ascending, 10–25 cm.

0.7–3.2 mm.

0.5–3.5 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.

14.6–18(–22) mm;

calyx 5.0–7.8 mm, strigose, tube 3.8–5.3 × 3.7–3.8 mm, lobes subulate, 1.1–2.8 mm;

corolla white, keel tip pink-purple fading dark purple;

keel 11.3–12.3 mm.

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.

erect, stramineous, ± straight, narrowly oblong-ellipsoid, slightly compressed laterally, (10–)12–17(–20) × 4.4–6 mm, fleshy becoming woody, glabrous or strigose;

sessile.

3–9.

18–20.

= 16, 24.