Flora of North America species comparison

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

erect or ascending, 2.5–10 cm underground, strigose.

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.

some or most reduced to phyllodia and continuous with rachis, 1.5–10.5 cm;

stipules distinct throughout, 2–7 mm, papery at proximal nodes, herbaceous at distal nodes;

leaflets 0(or 3–7), blades linear to oblong, 2–14 mm, apex acute to obtuse, surfaces strigose;

terminal leaflet decurrent distally, 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.

6–25-flowered, flowers ascending;

axis 3–19(–26) cm in fruit;

bracts 1–1.5 mm;

bracteoles 0–2.

narrowly ascending or incurved, 0.2–4 cm.

4–23 cm.

0.7–3.2 mm.

1–3 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.

8.8–11.5 mm;

calyx campanulate, 3.5–5.2 mm, black-strigose, tube 2.8–4.2 × 2.2–2.6 mm, lobes triangular, 0.5–1.2 mm;

corolla pink-purple or tinged purplish or pinkish;

banner recurved through 45°;

keel 7.7–8.4 mm, apex obtuse to subacute, not 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.

deflexed, brown or stramineous, slightly curved or straight, lanceoloid-oblong to oblong or lanceoloid-ellipsoid, laterally compressed, 20–35 × 5–9 mm, papery, glabrous or strigose;

sessile or subsessile.

3–9.

8–14.

= 16, 24.