Flora of North America species comparison

emersed or submersed; submersed leaves mostly absent;

petiole terete to triangular, 2–36 cm;

blade with translucent markings present as distinct lines, elliptic, lanceolate, or ovate, 2.6–15.5 ´ 0.5–20 cm, base truncate or occasionally cordate to tapering.

emersed;

petiole 4–5-ridged, to 115 cm;

blade with translucent markings dots and short distinct lines, absent in smaller leaves, elliptic to broadly ovate, 16–28 × 8–23 cm, base attentuate to cordate.

racemes, rarely panicles, of 1–9 whorls, each 1–3(–4)-flowered, erect, 1.5–40 ´ 1.7–50 cm, not proliferating;

peduncles 3–5-ridged, 2.1–57 cm;

rachis triangular;

bracts distinct, lanceolate, 0.3–2.5 cm, coarse, margins scarious;

pedicels spreading to ascending, 0.6–2.8 cm.

panicles, of 4–9 whorls, each 9–16-flowered, erect, to 65 × 45 cm, not proliferating;

peduncles ridged, to 131 cm;

rachis 3–4-ridged;

bracts distinct, lanceolate, 4–7 mm, coarse, margins coarse;

pedicels spreading, 1.5–7.5 cm.

6–11 mm wide;

sepals spreading to recurved, 9–13-veined, veins not papillate;

petals clawed;

stamens 9–15;

anthers versatile;

pistils 45–200.

4 cm wide;

sepals erect, 21-veined, veins not papillate;

petals not clawed;

stamens 21;

anthers versatile;

pistils ca. 200.

oblanceolate, plump, 3–5-ribbed, abaxially 2-keeled, 0.9–3.2 ´ 0.6–2.5 mm;

glands 1–2;

beak terminal, 0.6–1.3 mm.

oblanceolate, terete, 5-ribbed, not abaxially keeled, 2.5 × 0.6–1 mm;

glands 4–5;

beak terminal, 0.5 mm.

unknown.

= 22.