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.

ascending, ascending-decumbent, or erect, simple or producing axillary shoots below 1st-order inflorescence or at proximal nodes, 25–70 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.

blades linear-lanceolate or lanceolate, 6–15(–17) × 2–4 cm, usually ca. 3.5–6 times as long as wide, widest near middle or nearly so, thin or rarely subcoriaceous, base cuneate, margins entire, undulate or slightly crisped, apex acute.

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

terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, dense or occasionally interrupted near base, usually broadly paniculate (branches simple or with few 2d-order branches).

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

articulated in proximal 1/3, filiform, 3–7 mm, equaling or 1.5–2 times as long as inner tepals, articulation indistinctly 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 to ovate-lanceolate, occasionally almost triangular, (2.5–)3–3.5 × 2–2.5 mm, base truncate or rounded, margins entire or indistinctly erose, apex obtuse or subacute;

tubercles 3 (occasionally 1 in var. monotylos Rechinger f., then very large, subequal or only slightly narrower than inner tepal), distinctly unequal (1 larger tubercle subequal or slightly narrower than inner tepal), usually smooth.

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

dark reddish brown, 1.8–2.4 × 1–1.5 mm.

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

= 20.