Flora of North America species comparison

many, subsessile or very short petiolate;

blade subconcolorous, lanceolate to oblong, elliptic, or oval, (8–)10–30(–40) × 3–12(–15) mm, margin sharply dentate to entire.

mostly alternate;

petiole 0.5–2.5 cm, becoming shorter or subsessile in distal ones;

blade deltoid to rhombic-ovate or lanceolate, (10–)15–50(–70) × 8–40 mm, base rounded, truncate, or broadly cuneate, margin irregularly sinuate-dentate or repand-dentate to entire, sometimes subhastate, apex obtuse to acute;

distal blades often narrower and sometimes entire except for basal lobes.

in dense or interrupted, naked, simple or paniculate spikes mainly 5–8 mm thick, staminate ones 4-merous.

in glomerules in terminal spikes or panicles 3–20 cm, or reduced to solitary, rounded, terminal glomerule.

in small clusters, axillary.

brown, 1–1.3(–1.5) mm.

dark brown or black, 0.8–1.5 mm;

radicle inferior.

bracteoles sessile or subsessile (stipe to 1 mm), cuneate-orbicular to obovate, somewhat compressed, 2.1–3.5 × (1.7–)2–3.7 mm, united 1/2 of length, margin sharply and often slenderly toothed beyond middle, faces often rather strongly veined, smooth or with 1 or more slender or flattened appendages.

bracteoles densely packed on rachis, sessile, ovate-oblong or rounded-deltoid, (2–)2.5–3(–4.5) mm, united only at rounded or truncate base, angled and cristate on faces, thin or spongy-thickened.

= 18.