UW Burke Herbarium species comparison

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Micranthes apetala

Micranthes fragosa

Tiny swamp saxifrage, western swamp saxifrage

Clayton's saxifrage
Habit Scapose, herbaceous perennials from rhizomes, often mat-forming.
Leaves

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, 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

Capsules green or reddish-purple.

Micranthes apetala

Micranthes fragosa
Flowering time March-May April-June
Habitat Vernally moist meadows at low to middle elevations. Wet slopes and cliffs, often near watercourses.
Distribution
Occurring east of the Cascades crest in Washington; Washington to Oregon, east to Idaho and Montana.
[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. ferruginea, M. fragosa, M. gormanii, M. idahoensis, M. integrifolia, M. lyallii, M. nelsoniana, M. nidifica, M. occidentalis, M. odontoloma, M. oregana, 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 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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