Threeparted Miterwort

Ozomelis micrantha (Piper) Rydb
Mitella micrantha Piper, Brythea 7 : 162. 1899.
Perennial with a short rootstock ; flowering branches leafless, puberulent above, sparsely pubescent below, 2-4 dm. high ; petioles 5-10 cm. long, glabrous or hirsute ; blades ovate or round-reniform, 5-lobed, faintly crenate, glabrous or sparsely hirsute on each side and ciliate-margin ed ; racemes 2-10 cm. long, not secund ; flowers nearly sessile ; hypanthium with sepals 1.5 mm. high; sepals whitish, oblong, obtuse, 3-nerved with simple nerves; petals oblanceolate, entire, acuminate, 3-nerved, exceeding the sepals ; stamens short.
Type locality: Fort Colville, Washington. Distribution • Known only from the type locality.

Ozomelis anomala (Piper) Rydb
Mitella anomala Piper, Erythea 7 : 162. 1899.
Perennial with a rootstock ; flowering branches leafless, 3-4 dm. high, minutely puberulent ; petioles 8-10 cm. long, slender, glabrous or retrorsely hairy above ; blades roundedreniform with a broad sinus, 5-veined, scarcely lobed, doubly crenate, sparsely pilose above, glabrous beneath, ciliate, 2-4 cm. broad ; raceme 6-12-flowered, not secund ; flowers sessile ; hypanthium with sepals about 2 mm. high ; sepals whitish, acutish, 3-nerved, the midnerve branched ; petals wanting ; stamens 5, included or replaced by palmately 3-5cleft staminodia.
Type locality : Mountains near Eureka, California. Distribution: Known only from the type locality.

Ozomelis trifida (Graham) Rydb
Mitella trifida Graham, Bdinb. New Phil. Jour. 1829: 185. 1829.
Ozomelis varians Raf . Fl. Tell. 2 : 73. 1836.
Mitellopsis Hookeri Meissn. PI. Vase. Gen. Comm. 100. 1838.
Lithophragma nudicaulis Nutt.; T. & G. Fl. N. Am. 1 : 587, as a synonym. 1840.
Mitellopsis trifida Walp. Rep. 2 : 370. 1843.
Perennial with a short rootstock ; flowering branches 2-3 dm. high, naked, glaiidular-
puberulent ; petioles of the basal leaves 5-7 cm. long, retrorse-hairy at least above ; blades
reniform, 2-4 cm. broad, more or less distinctly 7-9-lobed with broad shallow rounded lobes
and crenate, sparingly hairy on both sides; racemes short, 2-6 cm. long; pedicels very
short; hypanthium hemispherical, together with the sepals 1.5-2 mm. long; sepals green,
triangular-ovate, strongly reflexed ; petals euneate, deeply 3-cleft at the apex ; filaments very short.
Type locality : Rocky Mountains, near Smoky River on the east side, in latitude 56°. Distribution : In wet places in the Canadian Rockies.