Burke: Micranthes oregana vs. Micranthes fragosa

	Micranthes oregana	Micranthes fragosa
	bog saxifrage, Oregon saxifrage	Clayton's saxifrage
Habit	Strong perennial from a short, woody base, the flowering stems leafless, 3-12 dm. tall, copiously glandular-pubescent above.	Scapose, herbaceous perennials from rhizomes, often mat-forming.
Leaves	Leaves basal, 10-20 cm. long, contracted to a broadly-winged petiole, the blades elliptic-oblanceolate to ovate-lanceolate, entire or shallowly toothed, nearly glabrous, but with soft hairs on the petiole margins.	Leaves all basal, petiolate, the petioles flattened, 4-10 cm. long; blades broadly ovate to deltate, 4-10 cm. long, fleshy, the base tapered, the margins entire, hairy, the surfaces nearly glabrous.
Flowers	Inflorescence an elongate panicle, narrow to somewhat diffuse; calyx 2-3.5 mm. long, the 5 reflexed lobes oblong lanceolate; petals white to greenish-white, usually 5 but sometimes 1 or more lacking, often unequal in size, obovate to ovate-oblong, 2-4 mm. long and 1-2.5 broad; stamens 10, filaments broadly club-shaped, 1-2 mm. long, greenish-white to pinkish.	Inflorescence an elongate, conic, open, compound panicle with 30 or more flowers, 20-50 cm. long, with purple-tipped, stalked glands; sepals 5, spreading, ovate to deltate; petals 5, white, not spotted, clawed, 2-3 mm. longer than the sepals; stamens 10, the filaments linear and flattened; pistils 2, fused half their length.
Fruits	Ovary nearly superior in fruit; carpels 2-4.	Capsules green or reddish-purple.

	Micranthes oregana	Micranthes fragosa
Flowering time	April-July	April-June
Habitat	Bogs, streambanks and wet meadows at mid-elevations in the mountains.	Wet slopes and cliffs, often near watercourses.
Distribution	Both sides of the Cascades crest in Washington; Washington to California, east to Alberta, Montana, Idaho, Nevada, and Colorado. [WildflowerSearch map] [BONAP county map]	East of Cascades in Washington, south to Oregon and east to Idaho. [WildflowerSearch map] [BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	M. apetala, M. ferruginea, M. fragosa, M. gormanii, M. idahoensis, M. integrifolia, M. lyallii, M. nelsoniana, M. nidifica, M. occidentalis, M. odontoloma, M. rufidula, M. tischii, M. tolmiei	M. apetala, M. ferruginea, M. gormanii, M. idahoensis, M. integrifolia, M. lyallii, M. nelsoniana, M. nidifica, M. occidentalis, M. odontoloma, M. oregana, M. rufidula, M. tischii, M. tolmiei
Web links	Local floras: 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	Local floras: 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 fragosa

bog saxifrage, Oregon saxifrage

Clayton's saxifrage

Habit

Strong perennial from a short, woody base, the flowering stems leafless, 3-12 dm. tall, copiously glandular-pubescent above.

Scapose, herbaceous perennials from rhizomes, often mat-forming.

Leaves

Leaves basal, 10-20 cm. long, contracted to a broadly-winged petiole, the blades elliptic-oblanceolate to ovate-lanceolate, entire or shallowly toothed, nearly glabrous, but with soft hairs on the petiole margins.

Leaves all basal, petiolate, the petioles flattened, 4-10 cm. long;

blades broadly ovate to deltate, 4-10 cm. long, fleshy, the base tapered, the margins entire, hairy, the surfaces nearly glabrous.

Flowers

Inflorescence an elongate panicle, narrow to somewhat diffuse;

calyx 2-3.5 mm. long, the 5 reflexed lobes oblong lanceolate;

petals white to greenish-white, usually 5 but sometimes 1 or more lacking, often unequal in size, obovate to ovate-oblong, 2-4 mm. long and 1-2.5 broad;

stamens 10, filaments broadly club-shaped, 1-2 mm. long, greenish-white to pinkish.

Inflorescence an elongate, conic, open, compound panicle with 30 or more flowers, 20-50 cm. long, with purple-tipped, stalked glands;

sepals 5, spreading, ovate to deltate;

petals 5, white, not spotted, clawed, 2-3 mm. longer than the sepals;

stamens 10, the filaments linear and flattened;

pistils 2, fused half their length.

Fruits

Ovary nearly superior in fruit;

carpels 2-4.

Capsules green or reddish-purple.