Flora of North America species comparison

mostly erect and branched, branches green, obtusely angled or striate, glabrate.

alternate except the proximalmost, petiolate;

blade green on both sides, rhombic-lanceolate to lanceolate, oblong, or narrowly lance-oblong or hastate-ovate, 25–120 × 3–40(–75) mm, entire or toothed, proximal ones broadly cuneate or sometimes hastate subbasally with obliquely antrorse basal lobes, distal cauline leaves lanceolate and entire.

mostly alternate, shortly petiolate;

blade narrow to broadly rhomboid, lanceolate, oblanceolate, or elliptic, (8–)12–35(–42) × 6–16 mm, thin, margin coarsely and irregularly dentate, glabrescent adaxially, somewhat scurfy abaxially.

compact or interrupted spiciform or paniculiform clusters.

mostly 5-merous.

in subterminal, axillary glomerules.

in axillary glomerules.

dimorphic: brown, 2.5–3(–3.5) mm wide, or black, 1–2 mm wide;

radicle of brown seeds subbasal to median, antrorse.

circular.

bracteoles green becoming black, rhombic to rhombic-triangular, or ovate-rhombic, compressed, ± uniformly sized, 2–7(–20) mm, base mostly hastate, acute, margin united almost to middle, entire or sparingly toothed, surfaces tuberculate.

bracteoles sessile or on the stipe to 0.5 mm, rhombic to obovate, almost flat to convex, 2.2–4 × 1.7–2.7 mm, thin or somewhat thickened in age, connate in basal 1/2, margin entire in basal 1/2, 2–4-toothed in distal 1/2, apex acute, scurfy.

= 36.

= 18.