Flora of North America species comparison

stiffly erect;

branchlets terete.

tardily deciduous, alternate or proximal-most subopposite, shortly petiolate;

blade gray green, oblong-ovate to elliptic or orbiculate, 8–30(–35) × 6–20 mm, margin entire or rarely dentate, apex rounded to retuse or obtuse.

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.

yellow, in clusters 2–3 mm wide, borne in panicles 6–30 cm.

in small, very numerous glomerules in axils of elongated, terminal leafy-bracteate spikes or finally paniculate.

brown, 2.4–2.8 mm.

dark brown or black, 0.8–1.5 mm;

radicle inferior.

bracteoles sessile or substipitate, 4–5 × 5–9 mm, base broadly cuneate, margin sharply toothed, apical tooth subtended by 2–6 equal or smaller teeth, faces smooth or rarely tuberculate.

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.