Flora of North America species comparison

erect, usually glabrous, rarely subglabrous.

erect, sparsely pubescent or glabrate, hairs minute, incurved.

whorled, sometimes alternate distally;

sessile or subsessile, or with narrow petiolelike base to 2 mm;

blade mostly linear, to oblanceolate, spatulate, obovate, or narrowly elliptic, especially proximally, 8–35(–50) × 1–5(–7) mm, base cuneate to acute, apex rounded to obtuse or acute, surfaces glabrous.

whorled at 1 or 2 nodes proximally, rarely more;

sessile or subsessile;

blade narrowly oblanceolate or spatulate proximally, to narrowly oblong or linear distally, 4–18(–25) × 1.5–2.5 mm proximally, 8–25 × 0.5–1.2(–2) mm distally, base cuneate, apex rounded to acute proximally, acute to acuminate distally, surfaces very sparsely pubescent or glabrate, hairs minute, incurved.

capitate to densely cylindric, 1–3.5(–6) × 1–1.7 cm;

peduncle 0.5–3(–5) cm;

bracts persistent, narrowly lanceolate-ovate.

to nearly spikes, cylindric-conic, (1–)2–8.5(–12) × 0.4–0.8 cm, often interrupted proximally;

peduncle (1–)2–13 cm;

bracts deciduous, lanceolate.

2–2.4 mm, glabrous.

0.1–1 mm, pubescent to subglabrous.

usually purple or pink, rarely white, wings and distal keel sometimes green-tinged, sepals often pink, 4–6 mm;

sepals ovate, 0.8–1.5 mm, sometimes ciliolate;

wings ovate to deltate, 3.5–6 × 2.7–4 mm, apex acuminate, often strongly cuspidate;

keel 2.8–3.5 mm, crest 2-parted, with 2 or 3 entire or 2-fid lobes on each side.

white, sepals, including wings, often with greenish or purple longitudinal stripe, keel distally green or yellow, crest often purplish, 2–3.5(–4) mm;

sepals ovate to oblong, 1.3–1.8 mm, pubescent;

wings elliptic or ovate, 2.2–4 × 1.3–1.5(–2) mm, apex usually obtuse, rarely acute to bluntly rounded, pubescent;

keel 3 mm, crest 2-parted, with 4 lobes on each side, pubescent.

with winged, stipelike base, strongly oblique, subglobose, 2–2.5 × 1.8–2.1 mm, margins not winged.

ovoid, ellipsoid, or oblong, 1.5–3 × 1.3–1.6 mm, margins not winged.

1.1–1.5 mm, short-pubescent;

aril 0.9–1.1 mm, lobes usually 2/3+ length of seed, rarely shorter or absent.

2–2.5 mm, pubescent;

aril 0.8–1.5 mm, lobes to (1/5–)1/3–3/4 length of seed.

= 36, 40.

= 24, ca. 36, 52–54.