UW Burke Herbarium species comparison

Leaves basal, the blades elliptic, up to 6 cm. long and 3 cm. wide, with 15-30 rounded teeth;

petioles slightly winged, 1-3 times as long as the blades.

Inflorescence pyramidal, open, up to 10 cm. long, the branches ascending;

calyx divided about half its length, the 5 ovate lobes 1-2.5 mm. long;

petals 5, white, broadly elliptic, 1.5-3 mm. long, with 2 yellow spots near the base;

stamens 10, the filaments petaloid, strongly club-shaped, 3-4 times as broad above the middle as at the base.

Ovary less than 1/3 inferior, with 2 follicles