Flora of North America species comparison

usually branched from base, erect or reclining.

simple or branched, erect or sprawling.

blades narrowly ovate to orbiculate, distal blades sometimes lanceolate, 2-8 × 1-6 cm, base nearly cordate to rounded, sometimes cuneate in distal leaves, margins serrate, apex rounded to acute;

cystoliths rounded or ± elongate.

blades elliptic, lanceolate, or narrowly to broadly ovate, 6-20 × 2-13 cm, base rounded to cordate, margins coarsely serrate, sometimes doubly serrate, apex acute or acuminate;

cystoliths rounded.

± globose cymes.

paniculate, pedunculate, elongate.

unisexual, staminate and pistillate intermixed in same inflorescence, sessile to short-pedunculate.

unisexual, staminate and pistillate on same or different plants, staminate ascending, the pistillate lax or recurved.

outer tepals linear, 0.4-0.8 mm, inner tepals ovate, 1.4-2 × 1-1.4 mm.

outer tepals linear to narrowly spatulate or lanceolate, 0.8-1.2 mm, inner tepals ovate to broadly ovate, 1.4-1.8 × 1.1-1.3 mm.

ovoid to broadly ellipsoid, 1.2-1.4(-1.6) × 0.8-1 mm.

ovoid to broadly ovoid, 1-1.3(-1.4) × 0.7-0.9 mm.

= 26.