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, normally branched in distal 2/3, occasionally almost near base, 10–60(–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 normally deciduous, rarely partially persistent at maturity;

blade lanceolate or oblong-lanceolate, gradually narrowed at both ends, (10–)15–30(–35) × 1.5–6 cm, more than 4 times as long as wide, base narrowly to broadly cuneate, margins entire, flat or, rarely, weakly undulate, apex acute, rarely subobtuse.

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

terminal, occupying distal 1/2 of stem, rarely more, reddish brown at maturity, usually lax, interrupted in proximal 1/2 or 2/3, broadly paniculate;

branches spreading.

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

articulated near base or at least in proximal 1/3, filiform, 3–6 mm, articulation weakly evident.

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.

15–25(–30) in rather dense whorls;

inner tepals narrowly triangular, narrowly rhombic-triangular, or linguliform, (2.5–)3–3.5(–4) × 1.2–1.5(–2) mm (excluding teeth), normally ca. 2 times as long as wide, base truncate or broadly cuneate, margins prominently dentate, apex acute very rarely subacute, straight, teeth (1–)2–3, normally at each side of margins, subulate-filiform, bristlelike, straight, 1–2(–3) mm, usually as long as width of inner tepals;

tubercles 3, equal or subequal, apex obtuse, smooth.

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

light brown, 0.9–1.75 × 0.6–1 mm.

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

= 60.