Flora of North America species comparison

usually erect, usually stiff, sometimes lax or sprawling, usually glaucous, especially proximally, glabrous.

sprawling to erect, densely pubescent to glabrate, hairs spreading and short.

early deciduous; usually sessile, rarely subsessile;

blade scalelike, linear-subulate, lanceolate, or elliptic, 2(–3) × 0.5–1 mm, base and apex narrowly acute, surfaces pubescent, hairs incurved.

sessile or subsessile;

blade oblanceolate, narrowly obovate, or narrowly elliptic, 3–25 × 1–5 mm, base long-cuneate, apex rounded or acute, surfaces usually densely pubescent, rarely subglabrous, hairs spreading and short.

terminal, often also appearing axillary (from branches proximal to racemes of major branches with vegetative portions highly reduced), 2–10(–15) × 0.8–1.9 cm;

rachis not thorn-tipped;

peduncle to 2 cm, sometimes vestigial, especially on reduced axillary racemes;

bracts mostly deciduous, rarely persistent, lanceolate, narrowly ovate, or linear.

terminal, sometimes appearing axillary if poorly developed, sometimes aggregated into pseudopanicles or reduced and appearing fasciculate, 0.5–2.5 ×0.6–2 cm;

rachis thorn-tipped;

peduncle 0–0.2(–0.5) cm, often poorly developed;

bracts deciduous, lanceolate.

1.5–3.2(–3.6) mm, glabrous.

1.5–4(–5.8) mm, usually shorter than flowers, pubescent, sometimes sparsely so.

pink, keel green to yellow distally, (3–)3.4–5 mm;

upper sepal persistent, others deciduous, ovate to elliptic, lower sepals ovate or elliptic to narrowly obovate, 1.5–2.8 mm, glabrous, margins sparsely ciliate proximally;

wings obovate, (2.7–)3.5–4.7 × (1.5–)1.8–2.8 mm, glabrous, margins sometimes sparsely ciliate proximally;

keel (2.5–)2.7–3.5 mm, sac incurved-puberulent in distal 1/2, beak bluntly rounded, 0.3–0.8 × 0.3–0.6 mm, pubescent.

cream to yellowish green, wings cream to greenish, upper petals often purple-tipped, distal keel often dark yellow to green, (3–)3.5–5(–5.3) mm;

sepals deciduous, ovate to elliptic, 1.6–3.5 mm, spreading-pubescent, margins usually ciliate;

wings obovate, 3–5 × 2–3 mm, glabrous or sparsely pubescent;

keel 2.7–3.8 mm, sac glabrous, beak absent or obscure and bluntly rounded, to 0.7 × 0.5 mm, glabrous;

stamens rarely 9.

obovoid, usually narrowly so, (2.6–)3.3–4.4 × 1.8–2.6 mm, base cuneate, margins with very narrow and even wing, glabrous or sparsely pubescent apically.

ellipsoid or slightly obovoid, (3–)4–6 × 2.5–4 mm, base rounded or, sometimes, cuneate, margins with very narrow and even wing, glabrous.

2.3–2.9 mm, pubescent, usually more sparsely pubescent to often subglabrous in distal 1/5–1/2 (sometimes evenly pubescent throughout);

aril 0.6–1.1 mm, lobes to 1/3 length of seed.

3.2–4.2 mm, pubescent;

aril 1–1.7 mm, lobes to 1/3 length of seed.

= 18 (36).

= 18.