Flora of North America species comparison

erect or ascending, glabrate, sometimes sparsely strigose distally.

obsolete, ascending, or prostrate, radiating from root-crown, to 3 cm, internodes mostly obscured by leaf bases, silky-strigose to strigulose.

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.

(1.5–)2.5–10 cm;

stipules 3–7 mm, submembranous;

leaflets 7–13, blades obovate-cuneate or elliptic-oblanceolate, 3–12 mm, apex obtuse or subacute, surfaces strigulose.

8–33-flowered, flowers deflexed;

axis 3–16 cm in fruit;

bracts 1–7 mm;

bracteoles 2.

2–10-flowered, flowers ascending;

axis 0.1–1.5 cm in fruit;

bracts 1.5–5.5 mm;

bracteoles 0(–2), exceptionally conspicuous.

erect, 4–26 cm.

ascending, 0.5–3(–5) cm.

1–7 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.

(14.5–)15–18.5 mm;

calyx cylindric or vase-shaped, 6–10.5 mm, strigulose, hairs black or white, tube 6.5–8 mm, lobes subulate, 1.3–2.5 mm;

corolla white, whitish, or ochroleucous;

banner recurved through 40°;

keel 8.3–14.3 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.

spreading-ascending (humistrate), green or purplish becoming brownish or stramineous, scarcely to moderately incurved, obliquely ovoid, lanceolate-ovoid, or lunately ellipsoid, obcompressed becoming laterally compressed distally, 9–20(–22) × 4–8 mm, unilocular, distinctly beaked, leathery, walls much less than 1 mm thick, densely strigulose.

40–75(–84).

18–33.