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 distal to middle, 50–120(–160) 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 broadly lanceolate to ovate-lanceolate or oblong-lanceolate, normally 25–50(–60) × 7–15 cm, ca. 3–4 times as long as wide, base broadly cuneate, rounded-truncate, or slightly cordate, margins entire, undulate or weakly crisped, occasionally flat, apex acute or subacute.

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, normally dense, narrowly paniculate, branches usually straight or arcuate.

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, 4–9 mm, articulation distinctly swollen.

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 broadly orbiculate or reniform, (4.5–)5–6(–7) × (4.5–)5–7(–7.5) mm, base usually distinctly cordate, margins entire or subentire to very weakly erose, flat, apex obtuse or, rarely, subacute;

tubercles normally absent,sometimes with 1 indistinct tubercle or slightly thickened midvein less than 1–1.3 mm wide.

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

dark brown or brown, (2.5–)3–3.5(–4) × 1.5–2 mm.

= 20.

= 60.