Flora of North America species comparison

12–19 cm;

stipules 0.2–0.4 cm, with inconspicuous inner fold throughout, inner fold and base with stipitate, multicellular glands or glabrous;

pulvinus less than 1/2 as long as petiole;

rachis ± glabrous, without stipitate glands in canal;

stipels narrow obscure glands;

leaflets 16–50+, blades elliptic-ovate to oblong, base acute, apex obtuse, surfaces glaucous, usually glabrous abaxially, sometimes with diffuse, close-pressed hairs.

10–30+ cm;

stipules 1–1.1 mm, with inner fold throughout, inner fold and base with stipitate, multicellular glands;

pulvinus at least 1/2 as long as petiole;

rachis glabrous, with stipitate glands in canal at base of each leaflet pair;

stipels narrow, ± glandular;

leaflets 20–80+, blades rectangular to oblong, base obtuse, apex truncate to obtuse, surfaces usually glabrous.

1–12-flowered, racemes.

1–18+-flowered, racemes.

(0.9–)1.7–1.8(–3) cm.

(0.2–)1.6–1.9(–4.2) cm.

(0.9–)1.3–1.5(–1.7) cm;

calyx ± zygo-morphic, deciduous before fruits mature, lobes 5, short-deltate, rim of tube with spreading hairs, stalked glands usually present between abaxial lobes;

corolla pale yellow;

banner ovate, base truncate-obcordate, apex emarginate, calluses as relatively small ridges at claw base, forming a pocket, thickened, knoblike at top of claw;

wings without basal tooth;

keel ± same color throughout, apex rounded-obtuse, curved upward to slightly outward in apical tooth, without basal tooth;

stamens curved upward;

style curved upward with stamens;

ovules 4–9.

(1–)1.4–1.5(–1.9) cm;

calyx actinomorphic, lobes 5, subulate–acuminate, rim of tube glabrous or with short hairs inside, stalked glands absent;

corolla yellow-orange, banner with purple-maroon spots on outer surface;

banner ovate to obovate, base truncate, apex obtuse-retuse, calluses as shallow ridges or winglike along claw, callus apices truncate to rounded with lobes less than 2 mm;

wings with basal tooth (short, blunt);

keel yellow, apex purple or maroon, rounded-acute, curved upward to inward towards banner, with basal tooth;

stamens strongly curved inward within keel;

style recurved towards banner;

ovules (12–)29–36(–51).

light tan to reddish brown, 4-angled, with pronounced torulose wings, square in cross section, straight, (3.2–)5.7–6.2(–9.3) × 0.8(–0.9) mm, seed chambers clearly visible externally, beak short- to long-pyramidal, (0.4–)0.7–0.8(–1.3) cm, indehiscent or tardily dehiscent;

stipe (1.1–)1.6(–2) cm.

brown, with maroon-red mottling, narrow-elongate, terete to elliptic in cross section, straight to falcate, (8.3–)16.9–19.4(–23.5) × 0.3(–0.4) cm, beak connate, narrowly tapered, (0.3–)0.6–0.8(–1.1) cm, tardily elastic dehiscent;

stipe (0.2–)0.5(–0.7) mm.

(1–)3 or 4(–9), dark reddish brown, without mottling, reniform-orbicular.

(12–)29–36(–51), green-brown to reddish, often with purple-black mottling, columnar.

= 12.