Flora of North America species comparison

solitary or several from base, erect or ascending, branched in distal 2/3 (in inflorescence), 10–40(–45) cm.

erect, branched in distal 1/2–2/3, 30–70(–100) cm.

blade obovate-oblong, ovate-lanceolate, oblong-lanceolate, or lanceolate; 2–6(–10) × 0.5–2 cm, base hastate (with spreading lobes), auriculate, or occasionally without evident lobes, margins entire, flat, apex obtuse or subacute.

ocrea deciduous or partially persistent at maturity;

blade oblong-lanceolate, 20–30 × 5–10 cm, base cordate to broadly cuneate, margins entire, repand, flat or crisped, apex acute or attenuate.

terminal, occupying distal 2/3 of stem, usually lax and interrupted, narrowly paniculate.

terminal, occupying distal 1/2–2/3 of stem, interrupted in proximal 1/2, paniculate, branched.

articulated in proximal part, filiform, 1.5–2.5(–3) mm, articulation indistinct or slightly swollen.

articulated in proximal 1/3, filiform, distinctly swollen in distal part (near base of tepals, but not at articulation point), 4–14 mm, articulation weakly evident, not swollen.

3–6(–8) in whorls;

inner tepals orbiculate or broadly ovate, 2.5–3.2 × 2.7–3.2 mm, base broadly cordate or rounded, apex obtuse or subacute;

tubercles absent or some inner tepals with slightly swollen central veins.

10–20 in whorls;

inner tepals oblong-ovate, 4–6 × 3–5 mm, base rounded to subcordate, margins entire, apex obtuse or subacute;

tubercles absent.

brown or dark brown, 0.9–1.2 × 0.6–0.8 mm.

mature specimens not seen.

= 8 (pistillate plants), 9 (staminate plants), 10 (both sexes).

= 120.