Flora of North America species comparison

simple or more commonly branched throughout, mainly 2–8(–10) dm, branches mostly obtusely angled;

herbage scurfy, becoming glabrate.

alternate or proximalmost opposite, short petiolate proximally, sessile and often cordate-clasping distally;

blade ovate to deltoid or oval, 4–30(–40) × 3–30 mm, base truncate or subhastate to rounded, margin entire or dentate, apex acute to obtuse.

numerous, sessile or proximal short petiolate;

blade greenish adaxially, paler abaxially, oblanceolate to spatulate-elliptic or oval, (3–)5–18 × 1–8 mm, margin entire, more scurfy abaxially.

in axillary glomerules.

in glomerules mainly in distal axils;

sepals 3–5.

in glomerules largely in distal bractless axils, thus short spicate;

calyx 5-cleft.

in proximal axils.

brown, 1–2 mm wide.

light brown, 0.8–1 mm.

bracteoles scarcely compressed, 2–3 mm and as wide, apex truncate to broadly rounded, with 3 (or more) teeth across summit, surfaces smooth (or rarely tuberculate).

bracteoles subsessile or stipe to 0.3 mm, suborbiculate to obovate, 1–1.5(–2) × 1.1–1.8 mm, united to middle, margin minutely 3–5-toothed at apex, otherwise entire, apex green, faces smooth or rarely tuberculate.

= 18.