Flora of North America species comparison

often suffused with red-purple, terete, sparingly farinose when young.

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.

mainly alternate, numerous;

petiole 2–12(–16) mm;

blade cordate-ovate to orbicular, subreniform, cordate, or deltoid, (5–)8–20(–25) mm and about as wide or wider, base truncate to cordate (or attenuate when young), apex rounded to obtuse or acute.

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

in loose, deciduous, terminal panicles overtopping foliage, rachis and branches filiform, glomerules often beadlike in alternate position along rachis, perianth 5-lobed.

in small clusters, axillary.

axillary.

brown, 1–1.3(–1.5) mm.

white, 3 mm wide, dull.

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 on stipes 2–6 mm, samaralike, suborbicular, oblong or cordate in outline, winged, compressed, 6–16 mm wide, margins 2–4 times as wide as body, wings undulate or entire, surfaces smooth.

= 18.