Flora of North America species comparison

13–25+ cm;

stipules 0.3–0.4 cm, with conspicuous inner fold throughout, hairs dense, close-pressed, inner fold and base with stipitate, multicellular glands;

pulvinus slightly more than 1/2 as long as petiole;

rachis ± sericeous, without stipitate glands, obscure gland(s) present at petiolule base;

stipels reduced in size between successive leaflets, long-filamentous glandular;

leaflets 28–36+, blades elliptic-ovate to oblong, base acute, apex obtuse to acute, surfaces silky sericeous abaxially, usually glabrous adaxially.

5–15+-flowered, racemes.

(0.6–)1.7–2.1(–4.1) cm.

(0.7–)0.9–1(–1.3) cm;

calyx ± zygomorphic, lobes 5, short-acuminate, rim of tube villose, stalked glands between abaxial lobes absent in fruit;

corolla yellow, banner venation sometimes darker;

banner ovate, base cordate-truncate, apex emarginate, becoming strongly reflexed and contorted, calluses as relatively small, acute teeth at claw base, thickened, knoblike at base of blade/top of claw;

wings without basal tooth;

keel ± same color throughout, apex acute, curved strongly inward, without basal tooth;

stamens incurved within keel;

style recurved;

ovules 4–6.

red- to gray-brown, without horizontal mottling in age, 4-angled, square in cross section, straight or slightly falcate, (0.8–)4.4–5.5(–6.5) × (0.7–)0.8(–0.9) cm, thick, woody, seed chambers apparent in young fruits becoming obscure at maturity, margins of young fruits with shallow thin ridges resembling early wings of S. punicea or S. drummondii, ridges becoming thickened and rounded at maturity, beak short-pyramidal, (0.2–)0.4–0.7(–1.3) cm, indehiscent;

stipe (0.4–)0.5–0.6(–0.9) cm.

(1–)4 or 5(or 6), reddish brown to gray, without mottling, reniform-orbicular.

= 12.