Flora of North America species comparison

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

erect, branched above middle, 25–75 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 oblong-lanceolate to obovate-elliptic, 6–12(–15) × (2–)3–4(–5) cm, less than 4 times as long as wide, not coriaceous, occasionally subcoriaceous, base broadly cuneate or rounded, occasionally truncate, margins entire, flat or, rarely, weakly undulate, apex obtuse, rarely subacute.

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

terminal, occupying distal 1/2 of stem, usually lax, interrupted, broadly paniculate;

branches usually distinctly arcuate and flexuous.

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

articulated in proximal 1/3, filiform, 3–8 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 remote whorls;

inner tepals deltoid or triangular-deltoid, 2.5–3.7(–4) × 2–2.8(–3) mm (excluding teeth), ca. 1.5 times as long as wide, base truncate, margins dentate or rarely subentire, apex acute to subacute, teeth 2–3, normally at each side of margins, triangular, 0.2–0.5 mm;

tubercles 3, unequal or, occasionally, subequal, normally less than 2 times as wide as inner tepals.

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

brown or reddish brown, 1.8–2.3 × 1.2–1.5 mm.

= 40.

= 20.