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 from above middle, 80–150(–200) 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 ovate-lanceolate or oblong-lanceolate, normally 30–45(–50) × 10–15 cm, base truncate, broadly cuneate, or weakly cordate, margins entire, flat or weakly undulate, apex acute or subacute.

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

terminal, occupying distal 1/2 of stem, normally dense, narrowly to broadly paniculate, branches usually straight or arcuate, rarely indistinctly flexuous.

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

articulated in proximal 1/3, sometimes almost near base, filiform, 5–13(–17) mm, articulation usually distinctly 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(–25) in whorls;

inner tepals broadly ovate, suborbiculate, or orbiculate, (5–)5.5–8(–10) × 5–9(–10) mm, base usually distinctly cordate, margins entire or subentire to very weakly erose, apex obtuse or occasionally subacute;

tubercles normally 1, more than 1 mm wide, normally less than 2 times as wide as inner tepals, occasionally 3, then 2 much smaller.

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

brown, 3–3.5 × 1.5–2.5 mm.

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

= 60.