Flora of North America species comparison

erect, branched in distal 2/3 (sometimes with few flowering stems from rootstock), 30–80(–120) cm.

erect, branched above middle (only in inflorescence), 50–100 cm.

ocrea deciduous to partially persistent at maturity;

blade oblong-lanceolate, obovate-lanceolate, or lanceolate, normally (5–)10–30 × 2.5–6 cm, base broadly cuneate, rounded, or truncate, rarely subcordate, margins entire, flat to very weakly undulate, apex subacute, occasionally obtuse.

ocrea deciduous or partially persistent at maturity;

blade with large lateral veins alternating with short ones, oblong or oblong-lanceolate, 30–40(–50) × 10–12 cm, more than 3 times as long as wide, base broadly cuneate, truncate, or weakly cordate, margins entire or indistinctly repand, flat, apex obtuse or broadly acute.

terminal, occupying distal 2/3 of stem, lax, interrupted, broadly paniculate, branches simple or nearly so, almost all but distalmost whorls with subtending leaves;

panicle leafy at least in proximal 2/3 of length.

terminal, occupying distal 1/2 of stem, usually dense, narrowly paniculate.

articulated in proximal 1/3 or occasionally near middle, filiform, 1–4(–5) mm, ca. as long as inner tepals or slightly longer, articulation distinctly swollen.

articulated in proximal 1/3, filiform, 6–16 mm, articulation indistinct.

10–20 in dense remote whorls;

inner tepals oblong-lanceolate, oblong, or lingulate, 2–3 × 1–1.6(–2) mm, ca. 2 times as long as wide, base cuneate or truncate, margins entire, apex obtuse;

tubercles 3, equal or subequal, largest tubercle almost as wide as inner tepal.

10–20 in whorls;

inner tepals ovate-triangular or subcordate, 5–6 × 4.5–6 mm, widest at or near middle, base weakly emarginate, margins entire, erose, or indistinctly denticulate mostly at base, apex abruptly narrowed, acute or subacute;

tubercles absent.

usually dark reddish brown, 1.5–1.8 × 1–1.4 mm.

deep brown to reddish brown, 2.5–4(–4.5) × 1.8–2.5 mm.

= 20.

= 120.