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.

Mitella trifida is a species of flowering plant in the saxifrage family known by the common names threeparted miterwort and Pacific miterwort. It is native to western North America from Alaska to Montana to California, where it grows in wet wooded habitat types. It is a rhizomatous perennial herb growing up to about 45 centimeters tall. The leaves occur around the base of the stem. They have rounded blades up to 10 centimeters wide and lobed, round-toothed edges. The erect inflorescence bears up to 20 flowers, usually along one side of the stem. The distinctive flower is cup-shaped with five white or violet-tinged petals which are usually, but not always, divided into three lance-shaped lobes.