Flora of North America species comparison

stiffly erect;

branchlets terete.

slender to rather coarse, initially erect-ascending, finally spreading-ascending, scurfy when young.

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.

alternate except proximalmost ones, blade ovate to cordate-ovate, 5–15(–20) × 3–10(–13) mm;

base mostly cordate (to rounded), margin entire or denticulate, apex acute to attenuate, thickish and scurfy-tomentose.

of both sexes mixed in small axillary clusters.

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

in glomerules in distal axils, 4–5-merous.

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

brown, 2.4–2.8 mm.

deep red-brown, 1.5–1.8 mm.

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 sessile or subsessile, round-ovate (semi-orbiculate) to deltoid-rhombic or flabellate, slightly compressed, 3–5 mm and as broad, united to middle, deeply toothed, margin with acute teeth, terminal tooth subequal to others or largest, thin and soft at margin, hard at center, scarcely though sometimes tuberculate on faces.

= 36, 54.