Micranthes lyallii |
Micranthes oregana |
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Lyall's saxifrage, red-stemmed saxifrage |
bog saxifrage, Oregon saxifrage |
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Habit | Perennial with well-developed rhizomes, often forming small mats. | Strong perennial from a short, woody base, the flowering stems leafless, 3-12 dm. tall, copiously glandular-pubescent above. |
Leaves | Leaves all basal, the leaves wedge-shaped to fan-shaped, 10-25 mm. long and nearly as broad, coarsely dentate with 7-9 teeth, with slender petioles of similar length, glabrous or with a few soft, brown hairs. |
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. |
Flowers | Inflorescence, calyx and fruits often bright red; inflorescence a cyme with up to 15 flowers, the peduncles slender, often with linear, entire bracts; calyx lobed almost to the base, the 5 lobes oblong-lanceolate, 2-3 mm. long, sharply reflexed; petals 5, white, aging to pink, 2.5-4 mm. long, the blade oblong-oval, rounded to a short, broad claw; stamens 10, equaling the petals, the filaments white, club-shaped; carpels often 3-5, fused only 0.5-1 mm., the ovary mostly superior, the carpels tapered to styles less than 1 mm. long. |
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. |
Fruits | Follicle 7-12 mm. long exclusive of the slender, divergent, stylar beaks. |
Ovary nearly superior in fruit; carpels 2-4. |
Micranthes lyallii |
Micranthes oregana |
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Flowering time | July-September | April-July |
Habitat | Wet, gravelly meadows and along streams and ponds at high elevations. | Bogs, streambanks and wet meadows at mid-elevations in the mountains. |
Distribution | Occurring on both sides of the Cascades crest in northern Washington; Alaska to Washington, east to Alberta, Idaho, and Montana.
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Both sides of the Cascades crest in Washington; Washington to California, east to Alberta, Montana, Idaho, Nevada, and Colorado.
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Origin | Native | Native |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Web links |
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