Flora of North America species comparison

frequently tinged with red, much branched, sparsely scurfy.

many, sessile or short petiolate;

blade obovate, oblong, oblanceolate, or elliptic, (5–)7–20 × 1–3(–5) mm, base cuneate, margin entire, apex acute.

persistent, proximal ones opposite, becoming alternate distally, short petiolate or subsessile;

blade oblong to oblong-lanceolate, ovate, obovate, or spatulate, 12–40(–50) × 5–25 mm, base commonly subhastate to cuneate, margin entire or sinuate-dentate to strongly undulate-crisped, apex acute.

in glomerules in distal axils and short terminal spikes.

in interrupted or crowded glomerules 2–4.5 mm thick, in sparsely leafy paniculate spikes to 5+ dm.

in small axillary clusters.

few to solitary, in axillary clusters or in crowded or interrupted, often leafy, erect, branched spicate racemes or racemose panicles to 25+ cm.

brown, 1.3–1.5 mm.

brown, 1.5–2 mm.

bracteoles sessile or subsessile, broadly obovate, 2–3 mm and as broad or about as broad, united 1/2 of length, margin free, deeply and sharply dentate, narrowed at summit, faces smooth or sometimes tuberculate.

bracteoles on slender or stout stipes (2–)4–20 mm (or sessile), body broadly elliptic to globose, 6–15 mm and wide, spongy, united to the linear apex, margin deeply laciniate, faces appendaged with flattened to hornlike tubercles to 8 mm.