Flora of North America species comparison

stiffly erect;

branchlets terete.

obtusely angled, finely 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.

sessile or short petiolate;

blade paler abaxially, oblong or rhombic-ovate to broadly obovate or narrowly oblong or narrowly elliptic, 10–30 × (1–)3–15 mm, thin, base rounded to cuneate, margin repand-dentate or sinuate-dentate to undulate or distal ones or all of them entire, apex rounded to acute, mucronate, densely white scurfy abaxially, grayish green and usually glabrate adaxially.

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

in short, dense, naked terminal spikes or panicles;

calyx 5-cleft, lobes green keeled.

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

fascicled in axils.

brown, 2.4–2.8 mm.

brown, 1–1.5 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 with stipes to 0.5 mm, broadly cuneate-orbiculate, compressed, (2–) 2.5–4.5 × (1.5–)2.6–5 mm, usually as broad as or broader than long, much thickened at maturity, united only at truncate or broadly cuneate base, margin deeply and acutely dentate, faces with 2, sometimes swollen, dentate crests or covered with irregular, conic-acute, corky tubercles, seldom smooth.