Flora of North America species comparison

erect, sometimes slightly glaucous, glabrous.

erect, puberulent or glabrous, hairs appressed, incurved, and spreading.

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.

alternate;

subsessile or petiolate, petiole to 0.5–5 mm;

blade scalelike proximally, linear-lanceolate to lanceolate-elliptic, lanceolate, or lanceolate-ovate distally, (13–)20–80 × (1.5–)8–35 mm, base acute, margins often appearing serrulate from toothlike projections associated with cilia, apex acute to acuminate, 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.

conic or cylindric-conic, (1–)1.5–4(–4.5) × 0.5–0.9 cm;

peduncle 1–3 cm;

bracts deciduous, ovate.

0.2–1(–2) mm, glabrous.

0.5(–1) 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.

white, wings often with greenish veins, other sepals sometimes white, 2–4 mm;

sepals ovate or lanceolate, 1–2 mm;

wings suborbiculate to broadly elliptic or obovate, 2–3.7 × 2–3 mm, apex bluntly rounded (or rarely obtuse);

keel 2–3.5 mm, crest 2-parted, with 2–4 lobes on each side.

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

subglobose or ovoid, 2.5–4.5 × 3–4.3 mm, margins not winged.

1.2–2.2 mm, pubescent;

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

2–3.5 mm, sparsely pubescent;

aril 1.9–3.6 mm, lobes subequal to longer than length of seed.

= 34.

= 34.