Micranthes lyallii |
Micranthes tischii |
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Lyall's saxifrage, red-stemmed saxifrage |
Olympic saxifrage |
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Habit | Perennial with well-developed rhizomes, often forming small mats. | Scapose, herbaceous perennials, often solitary, from a crown with bulbils. |
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 all basal, petiolate, the petiole flattened, 0.4-2 cm. long; blades ovate to elliptic, fleshy, 0.5-2 cm. long, the base tapered, the margins serrate and hairy, the upper surface glabrous, the lower reddish-brown woolly. |
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 a flat-topped, 5- to 15-flowered, open cyme 2-7 cm. long, with purple-tipped, stalked glands; sepals 5, spreading to reflexed, ovate; petals 5, greenish, often purple-margined, not spotted or clawed, lanceolate to obovate, 1.5-2 mm. long, barley longer than the sepals; stamens 10, the filaments linear and flattened; pistils 2, distinct almost to base. |
Fruits | Follicle 7-12 mm. long exclusive of the slender, divergent, stylar beaks. |
Capsules purplish. |
Micranthes lyallii |
Micranthes tischii |
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Flowering time | July-September | May-July |
Habitat | Wet, gravelly meadows and along streams and ponds at high elevations. | Forested ledges and rock crevices where moist. |
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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Endemic to Washington, where known from the Olympic Mountains and Washington Pass in Okanogan County. |
Origin | Native | Native |
Conservation status | Not of concern | Sensitive in Washington (WANHP) |
Sibling taxa | ||
Web links |
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