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 or erect, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 40–60(–80) 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 deep olive green, with strongly prominent veins abaxially, linear-lanceolate, occasionally lanceolate, 5–12 × 1.5–4 cm, usually ca. 3.5–5 times as long as wide, widest near or below middle, thick, coriaceous, base cuneate or rounded-cuneate, margins entire to crenulate, undulate or crisped, flat, apex subobtuse or broadly acute.

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

terminal and axillary, terminal usually occupying distal 1/3 of stem, lax, interrupted almost to top, usually broadly paniculate (branches simple or nearly so).

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

articulated in proximal 1/3 or almost near middle, filiform or slightly thickened, especially distally 3–6(–7) mm, not more than 2–2.5 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.

5–15 in whorls;

inner tepals orbiculate, ovate-deltoid, or ovate-triangular, 3.5–4.5(–5) × 3–4(–4.5) mm, base truncate or rarely indistinctly cordate, margins entire, apex subacute;

tubercles 3, equal or subequal, much narrower than inner tepals, free margins of inner tepals wider than or at least as wide as tubercle, verrucose to subglabrous.

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

brown or dark reddish brown, 2.5–3 × 1.5–2 mm.

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

= 20.