Flora of North America species comparison

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

prostrate to erect, sometimes glaucous, at least when young, glabrous or pubescent, hairs spreading to slightly incurved.

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.

subsessile to petiolate, petiole to 1(–2) mm;

blade obovate or elliptic, 4–31 × 0.8–11 mm, base cuneate, apex rounded or acute, surfaces densely to sparsely pubescent or subglabrous, hairs spreading to slightly incurved.

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 reduced to (1 or)2–few flowers, 3–12.5 cm;

rachis thorn-tipped;

peduncle 0.1–0.5 cm;

bracts usually deciduous, rarely persistent, elliptic, ovate, or lanceolate.

1.5–3.2(–3.6) mm, glabrous.

(1.5–)3.5–10(–20.5) mm, glabrous or pubescent.

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.

pink to rose, wings (and other sepals) sometimes light green, distal keel yellow or green, (6–)8–12(–13) mm;

sepals deciduous, ovate, elliptic, or lanceolate, 2–7.2 mm, glabrous or pubescent;

wings obovate to elliptic-obovate, (5–)7–11.5(–12.2) × (2.3–)3–5.2(–5.9) mm, glabrous or pubescent;

keel (5.4–)6.2–10.5 mm, sac glabrous, beak oblong, 1–3 × 0.9–1.5 mm, glabrous.

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 to obovoid, 4.3–8.8(–10) × 3.7–7.3 mm, base cuneate to rounded, margins with narrow, entire or slightly erose wing, glabrous or pubescent.

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.

3.3–4.9 mm, ± evenly and moderately densely pubescent, occasionally with glabrate patches;

aril 1.2–3.1 mm, lobes to 1/2 length of seed.

= 18 (36).

= 18, 36.