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 proximally, often alternate distally;

sessile or subsessile;

blade obovate, oblanceolate, narrowly elliptic, or linear, 10–50 × 1–4(–7) mm, base cuneate, apex acute, obtuse, or rounded, 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.

capitate, 1–3.5 × 1–1.6 cm;

peduncle 0.8–5 cm;

bracts persistent, narrowly triangular-ovate.

0.4–1.5 mm, glabrous.

0.7–2 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.

purple or pink, wings sometimes green-tinged, sepals often pink, 3.5–4.5 mm;

sepals suborbiculate to ovate, 0.8–1.5 mm;

wings ovate or ovate-oblong, 3–4.5 × 1.5–2.5 mm, apex acute, short-mucronate;

keel 2.8–3.8 mm, crest 2-parted, with 3 or 4 lobes on each side, or lobes entire.

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

globose or globose-reniform, 2 × 2 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.

1.3–1.5 mm, sparsely pubescent;

aril 0.8–1.3 mm, lobes 2/3+ length of seed.