Flora of North America species comparison

usually erect, rarely ascending, branched above middle, 25–90(–100) cm.

erect, rarely ascending, several from base, branched in inflorescence, 5–15(–20) cm;

shoots usually densely crowded, not elongated.

ocrea prominent and persistent at maturity, whitish or silvery white, membranous;

blade oblong, oblong-elliptic, or obovate-lanceolate, (5–)8–30 × 2–8(–12) cm, base cuneate or narrowly cuneate, margins entire, flat or indistinctly crisped, apex acute or acuminate, rarely obtuse.

ocrea brownish or reddish brown, membranous;

blade linear or spatulate-lanceolate, not hastate (without basal lobes), 1.5–5 × 0.1–0.3 cm, base narrowly cuneate (gradually narrowing into petiole), margins entire, flat or slightly convolute, apex obtuse or subacute.

terminal, occupying distal 1/2 of stem, narrowly paniculate, rarely simple.

terminal, occupying more than distal 1/2 of stem, ± dense, usually interrupted at least near base, narrowly paniculate with branches directed upward.

articulated near middle or in proximal 1/3, filiform, 5–15(–20) mm, articulation indistinct.

1–4 mm.

5–20 in whorls;

inner tepals oblong-cordate or orbiculate-cordate, 11–16 × 9.5–14 mm, base sinuate or emarginate, margins entire, rarely with few extremely small denticles at base, apex obtuse or subacute;

tubercles absent.

(3–)4–7 in whorls;

inner tepals distinctly enlarged, 1.6–2.3 × 1.8–2.5 mm (free wing 0.3–0.5 mm wide), base cuneate, apex obtuse or subacute.

brown or reddish brown, 4–5(–7) × 2.5–4.5(–5) mm.

brown or reddish brown, 1–1.5 × 0.8–1.2 mm.

= 40.

= 14.