Flora of North America species comparison

erect, glabrous.

erect, glabrous.

alternate;

sessile or subsessile;

blade spatulate proximally to linear or narrowly elliptic distally, (5–)10–20(–40) × (0.5–)1–3(–5) mm, base acute or obtuse, apex acute to acuminate, surfaces glabrous.

whorled, at least proximally, to alternate distally;

sessile or subsessile;

blade narrowly obovate to linear-spatulate proximally, linear to filiform distally, 3–30 × 0.5–1(–2.5) mm, base cuneate, apex acute, surfaces glabrous.

capitate to densely cylindric, (0.5–)1–2(–4) × 0.5–1.4 cm;

peduncle 0.3–2.5(–3) cm;

bracts subpersistent to tardily deciduous, subulate.

spikelike, narrowly cylindric, 0.5–6 × 0.2–0.4 cm;

peduncle 0.7–3 cm;

bracts deciduous, ovate to lanceolate-ovate.

0.4–1.5 mm, glabrous.

0–0.5 mm, glabrous.

usually pink, purple, or reddish purple, rarely white, sometimes greenish tinged, sepals sometimes pink or white, 4–6 mm;

sepals oval, elliptic-ovate, or lanceolate, 1–3 mm;

wings ovate to broadly elliptic, (2.6–)4.5–6.3 × (1–)2.5–3.5 mm, apex obtuse to broadly rounded, sometimes minutely apiculate, rarely acute;

keel 2.5–3 mm, crest 2-parted, with 2–4 lobes on each side.

white or greenish white, 1.5–2.8 mm;

sepals ovate to elliptic, 0.6–1.1 mm;

wings elliptic or obovate, 1.5–2.6 × 0.8–1 mm, apex obtuse to bluntly rounded;

keel 1.3–2.5 mm, crest 2-lobed, with 2 or 3 lobes on each side.

usually with flattened, sterile base, cuneate-subglobose, 2.5–3 × 2–2.5 mm, margins not winged (sometimes with raised rim).

ellipsoid to oblong, 1.7–2.2 × 1–1.5 mm, margins not winged.

1.3–1.7 mm, pubescent;

aril 1–1.3 mm, lobes usually (1/2–)2/3 to ± length of seed, rarely minute.

1.5–2 mm, glabrous;

aril 1 mm, lobes 1/2 length of seed.