Flora of North America species comparison

simple or branched from base, erect.

simple or branched, erect.

blades ovate to broadly ovate, distal blades becoming ovate-lanceolate to lanceolate, 7-15 × 5-10 cm, base truncate to cordate, margins coarsely dentate, apex acute to caudate;

cystoliths rounded or occasionally elongate.

blades elliptic to broadly elliptic, widest near middle, 1.8-9 × 1.2-4.5 cm, base cuneate, margins coarsely serrate, serrations often with lateral lobes, apex acute;

cystoliths rounded.

racemose, elongate.

spikelike or paniculate.

unisexual, staminate and pistillate in separate inflorescences, or with a few pistillate flowers at apex of staminate inflorescences, subsessile to short-pedunculate.

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

outer tepals lanceolate to narrowly ovate, 0.8-1 mm, inner tepals broadly ovate, 1.4-2.2 × 1.3-1.4 mm.

outer tepals ovate, 0.5-0.7 mm, inner tepals broadly ovate, 0.6-0.9 × 1.2-1.4 mm.

ovoid, 1.4-1.6 × 1-1.1 mm.

ovoid, 1.5-1.8 × 1.1-1.3 mm.

= 26.

= 24, 26.