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.

usually procumbent, rarely ascending, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 30–60 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 narrowly linear-lanceolate, 6–17 × 1–3 cm, usually ca. 7–10 times as long as wide, widest near middle, usually thick, not coriaceous or subcoriaceous, base cuneate, margins entire, usually strongly undulate and/or crenulate, 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, rather dense towards apex, distinctly interrupted in proximal 1/2, usually broadly paniculate (branches almost at right angles to main axis, 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, 4–7 mm, not more than 2–2.5 times as long as inner tepals, articulation slightly 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 in whorls;

inner tepals, broadly deltoid or deltoid-ovate, 3–4 × 3.2–4(–4.5) mm, base truncate, margins entire or indistinctly crenulate, apex obtuse or subacute;

tubercles absent, rarely small and indistinct.

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

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

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

= 20.