Flora of North America species comparison

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

erect or ascending, glabrate, sometimes sparsely strigose distally.

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.

3–22 cm;

stipules usually distinct throughout, rarely connate-sheathing at proximal nodes (var. avonensis), 2–7(–9) mm, thinly herbaceous becoming papery-scarious;

leaflets 7–33, blades obovate, elliptic, oblong, lanceolate, or oblanceolate, 3–50 mm, apex obtuse or retuse to acute, surfaces sparsely strigose or glabrescent abaxially, glabrous adaxially.

(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.

8–33-flowered, flowers deflexed;

axis 3–16 cm in fruit;

bracts 1–7 mm;

bracteoles 2.

narrowly ascending or incurved, 0.2–4 cm.

erect, 4–26 cm.

0.7–3.2 mm.

1–7 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.

(11–)15–24 mm;

calyx green or yellowish, gibbous, 5.8–14 mm, glabrous or sparsely strigose, tube 4.4–7.5 mm, lobes erect-ascending, subulate, deltate, lanceolate-subulate, lanceolate-attenuate, or triangular-subulate, 0.3–6 mm;

corolla ochroleucous or pale lemon yellow, keel often faintly to definitely maculate (purplish-tipped) or immaculate;

banner recurved through 45°;

keel 11.5–17 mm, apex bluntly rectangular.

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.

firmly attached to receptacle, falling while attached to pedicel, erect to spreading or declined, green or purplish-speckled becoming brown or stramineous, usually straight, ellipsoid, ovoid, cylindroid, obovoid, or subglobose, inflated, 18–42 × 5–25 mm, subunilocular, fleshy becoming leathery-woody, glabrous or puberulent;

septum 0.8–2.3 mm wide;

stipe 0–8 mm.

3–9.

40–75(–84).

= 16, 24.