Flora of North America species comparison

erect or ascending, glabrate, sometimes sparsely strigose distally.

slender, ascending, 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.

2–4 cm;

stipules connate, bidentate, 2.5–5 mm, membranous;

leaflets 9–15, blades ovate-elliptic, 2.5–8 mm, apex obtuse or acute, surfaces strigulose.

8–33-flowered, flowers deflexed;

axis 3–16 cm in fruit;

bracts 1–7 mm;

bracteoles 2.

(1 or)2–4-flowered;

axis (1–)1.5–4 cm in fruit.

erect, 4–26 cm.

erect, very slender, 1.5–8 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.

5–6.2 mm;

calyx 2–3.5 mm, strigose, hairs white or black, tube 1.2–2.5 mm, lobes linear-subulate, 0.7–1.2 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 or pendulous, red-mottled, ellipsoid, subinflated, slightly dorsiventrally compressed, 8–14 × 4–6 mm, thin becoming papery, strigulose or glabrous;

gynophore 0.5–0.8 mm.

40–75(–84).

16–18.