Flora of North America species comparison

erect, sometimes slightly glaucous, glabrous.

erect, glabrous.

usually whorled proximally, sometimes whorled to inflorescence, opposite to alternate distally, rarely alternate throughout;

sessile or subsessile, petiole rarely to 1 mm;

blade sometimes linear-spatulate proximally, usually linear, linear-oblong, -elliptic, or -lanceolate distally, (5–)10–20(–30) × 0.5–5.5 mm, base cuneate to acute, apex acute to acuminate, surfaces glabrous.

with basal rosette sometimes present at anthesis, sometimes withered or nearly so; alternate;

sessile or subsessile;

basal blade obovate, to 12 mm wide, cauline blade obovate, elliptic, or narrowly spatulate, sometimes becoming linear distally, 3–25 × 1–5 mm, base cuneate or acute, apex usually rounded proximally, acute to obtuse distally, surfaces glabrous.

nearly spikelike, conic to cylindric-conic, 0.5–5 × 0.2–0.6 cm, sometimes interrupted proximally, with some proximal fruits persistent below gap;

peduncle to 9 cm (usually elongate);

bracts deciduous, subulate to lanceolate.

in cymose panicles, ± flat-topped, 1.5–12 × 2.5–6 cm; each stem with (3–)5–20(–40) racemose branches, 0.4–6 × 0.7–1.5 cm;

central one nearly sessile, lateral ones with peduncle to 2 cm;

bracts persistent, lanceolate-ovate.

0.2–1(–2) mm, glabrous.

winged, 0.6–1.2 mm, glabrous.

white or with greenish or pinkish tinge, sepals sometimes purplish or whitish, 1–2.2(–2.6) mm;

sepals ovate or elliptic to lanceolate, 0.5–1.6 mm, ciliate;

wings suborbiculate, ovate, elliptic, or obovate, 1–2.6 × 0.8–2.5 mm, apex obtuse to bluntly rounded;

keel 1.2–1.8 mm, crest 2-parted, with 1 or 2 lobes on each side.

usually white or cream, sometimes greenish tinged, drying white to brownish green, corolla usually becoming pale yellowish apically, 3–6 mm;

sepals decurrent on pedicel, ovate, lanceolate, or linear-lanceolate, 1.6–2.5 mm;

wings narrowly ovate to slightly obovate or elliptic, 2.8–4.8 × 0.9–1.7 mm, apex narrowing into apical cusp, 0.6–0.8 mm;

keel 2–4 mm, crest 2-parted, with 3 2-fid (rarely entire) lobes on each side.

subglobose or broadly ellipsoid to ovoid, 1.3–2.4 × 0.7–2.2 mm, margins not winged.

depressed-suborbicular, 0.6–1 × 0.8–1.2 mm, margins not winged.

1.2–2.2 mm, pubescent;

aril 0.5–1 mm, lobes 1/3–1/2 length of seed.

0.5–1 mm, pubescent;

aril 0–0.4 mm, lobes absent, reduced to minute scales, or to 1/3–2/5 length of seed.

= 34.

= 64, 68.