UW Burke Herbarium species comparison

Basal leaves with sheathing stipules and long petioles, the blade oblong-lanceolate, 1-3 dm. long and up to 5 cm. wide, rounded or wedge-shaped at the base;

cauline leaves reduced upward; all leaves with irregularly curled margins.

Basal leaves several, with sheathing stipules and long petioles, the blade oblong-ovate or oblong-lanceolate, 10-30 cm. long, cordate at base;

cauline leaves few, much reduced upward.

Inflorescence a large, compact panicle, the branches nearly erect, leafy-bracteate to mid-length;

pedicels slender, 1.5-2 times as long as the flowers, with a swollen joint well below mid-length;

flowers perfect; outer 3 perianth segments ascending, 1.5 mm. long; inner 3 segments deltoid-ovate with a truncate base, 4-5 mm. long, usually with an oblong, veiny and pitted lump at the base;

styles 3.

Inflorescence a large panicle, leafy-bracteate below, the branches ascending;

pedicels slender, 2-3 times as long as the flowers;

flowers perfect; outer 3 perianth segments 1.5-2 mm. long, not reflexed; inner 3 segments triangular to oval, 3-11 mm. long, truncate at base, entire or denticulate on the margins, strongly veiny;

styles 3.

Achene 1.5-2 mm. long, smooth.

Achene about 4 mm. long, smooth.