Flora of North America species comparison

ascending or erect, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 50–90 cm.

erect or rarely ascending, 1 to several from base, branched in distal 1/2 (in inflorescence), (25–)30–90(–110) cm.

blades ovate-lanceolate, oblong-lanceolate, or lanceolate, 10–15 × 3–5.5 cm, usually 2.5–3.5 times as long as wide, widest in proximal 1/3, thick, usually not coriaceous, base broadly cuneate, truncate, or rounded, margins entire, flat or slightly undulate-crisped, apex acute or attenuate.

ocrea normally laciniate;

blade oblong-ovate, ovate-lanceolate, to lanceolate, 4–10(–15) × 1–4(–6) cm, normally more than 2.5 times as long as wide, base sagittate (with acute lobes directed downward, ± parallel to petiole), margins entire, normally flat, apex acute or subacute.

terminal and axillary, terminal usually occupying distal 1/2 of stem, dense, narrowly to broadly paniculate (branches usually simple).

terminal, occupying distal 1/3 of stem, usually lax and interrupted especially in proximal part, narrowly paniculate, cylindric (with 1st-order branches simple, or with few 2d-order branches).

articulated in proximal 1/3, thin but slightly thickened distally, (2–)3–7(–8) mm, usually as long as or shorter than inner tepals, articulation slightly swollen.

articulated near middle, filiform, 2–5(–6) mm, articulation distinct.

12–20 in whorls;

inner tepals broadly cordate or broadly ovate-deltoid, 7–10 × 8–12 mm, base deeply and broadly cordate, margins entire, apex acuminate;

tubercles 3, equal or subequal, usually minutely to distinctly rugose.

(2–)4–8(–10) in whorls;

inner tepals orbiculate, occasionally broadly ovate, 3–4(–5) × 3–4 mm, base rounded or cordate, apex obtuse;

tubercles small or occasionally absent.

brown or dark reddish brown, 2.5–3.5 × 2–2.5 mm.

black to dark brown, 1.8–2.5 × 1.2–1.5 mm, shiny, smooth.

= 20.

= 14 (pistillate plants), 15 (staminate plants).