Burke: Micranthes integrifolia

	Micranthes integrifolia
	Columbian saxifrage, swamp saxifrage, whole-leaf saxifrage
Habit	Pubescent perennial from a rhizome, the leafless flowering stems mostly single, 1-3 dm. tall.
Leaves	Leaves all basal, the blades 2-5 cm. long, narrowly rhombic to rhombic-ovate, narrowed gradually to broad petioles rarely as long, with prominent marginal hairs and rusty-woolly on the lower surface.
Flowers	Inflorescence thyrsoid, (15-)20+-flowered, open to ± congested, conic (usually branched) subtended by a leafy, rusty-woolly bract; calyx broadly conic, the 5 lobes oblong-lanceolate, 1-2 mm. long, reflexed; petals 5, white, obovate, 1.5-3 mm. long, at least half as broad as long; stamens 10, short, awl-shaped.
Fruits	Ovary about inferior in fruit; mature follicles 2, 3.5-5 mm. long, often reddish or purplish.

	Micranthes integrifolia
Flowering time	March-July
Habitat	Prairies, grassy slopes and vernally moist areas, sea level to subalpine.
Distribution	Occurring west of the Cascades crest and east in the Columbia River Gorge in Washington; British Columbia to California. [WildflowerSearch map] [BONAP county map]
Origin	Native
Conservation status	Not of concern
Sibling taxa	M. apetala, M. ferruginea, M. fragosa, M. gormanii, M. idahoensis, M. lyallii, M. nelsoniana, M. nidifica, M. occidentalis, M. odontoloma, M. oregana, M. rufidula, M. tischii, M. tolmiei
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Micranthes integrifolia

Columbian saxifrage, swamp saxifrage, whole-leaf saxifrage

Habit

Pubescent perennial from a rhizome, the leafless flowering stems mostly single, 1-3 dm. tall.

Leaves

Leaves all basal, the blades 2-5 cm. long, narrowly rhombic to rhombic-ovate, narrowed gradually to broad petioles rarely as long, with prominent marginal hairs and rusty-woolly on the lower surface.

Flowers

Inflorescence thyrsoid, (15-)20+-flowered, open to ± congested, conic (usually branched) subtended by a leafy, rusty-woolly bract;

calyx broadly conic, the 5 lobes oblong-lanceolate, 1-2 mm. long, reflexed;

petals 5, white, obovate, 1.5-3 mm. long, at least half as broad as long;

stamens 10, short, awl-shaped.

Fruits

Ovary about inferior in fruit; mature follicles 2, 3.5-5 mm. long, often reddish or purplish.