Flora of North America species comparison

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

obscured by stipules.

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.

reduced to phyllodia, 1–13(–17) cm;

stipules conspicuous, usually connate-sheathing, 2–8 mm, white-membranous;

phyllodia linear-oblanceolate proximally, narrowly linear distally, 1–3 mm wide, apex very acute and subspinulose distally, surfaces strigose.

(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 7–23-flowered, in bud resembling grass spikelets;

axis 4.5–24 cm in fruit;

bracts 2–4.5 mm;

bracteoles 0.

narrowly ascending or incurved, 0.2–4 cm.

erect, slender, wiry, 2–9(–11) cm.

0.7–3.2 mm.

1–2.5 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.

6.2–8.5 mm;

calyx 4.5–8.5 mm, strigose, tube 2–3.5 mm, lobes rigid-spreading and subulate-aristiform, 2.5–5.2 mm;

corolla pink-purple, banner striate;

banner recurved through 90°;

keel 6–6.6 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 or ascending, green, often with purple or red spots, becoming stramineous, curved, obliquely lanceoloid or oblong, laterally compressed, 7–12 × 1.7–3 mm, stiffly papery, glabrous or strigose;

sessile.

3–9.

4–8.

= 16, 24.