Flora of North America species comparison

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

erect, branched above middle or in distal 2/3, 20–40(–70) cm.

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 deciduous or partially persistent at maturity;

blade distinctly obovate or sometimes panduriform, 4–6(–7) × 2–4(–5) cm, less than 4 times as long as wide, coriaceous, base cuneate or truncate, margins entire, flat or crisped, apex obtuse.

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

terminal, occupying distal 1/2 of stem, usually lax, occasionally rather dense in distalmost part, interrupted in basal 1/2, broadly paniculate, branches spreading.

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

articulated in proximal 1/3, filiform or indistinctly thickened, 2.5–6 mm, articulation distinctly swollen.

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.

10–20 in rather dense whorls;

inner tepals obovate-triangular to deltoid, 3–4 × 1.8–2.5 mm (excluding teeth), ca. 1.5 times as long as wide, base truncate, margins distinctly dentate, apex acute to subacute, straight, teeth 2–3(–4), normally at each side of margins, triangular, straight, 0.4–1.5 mm, equaling or shorter than width of inner tepals;

tubercles usually 3, equal or subequal, apex acute or subacute, smooth or minutely punctate.

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

reddish brown, 1.7–1.9(–2) × 1–1.4 mm.

= 40.