Micranthes lyallii |
Micranthes rufidula |
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Lyall's saxifrage, red-stemmed saxifrage |
rusty-hair saxifrage |
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Habit | Perennial with well-developed rhizomes, often forming small mats. | Herbaceous perennial from short, horizontal rhizomes, the 1-3 leafless, reddish-glandular stems 1-2.5 dm. tall. |
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, the blades ovate, up to 6 cm. long and 3 cm. wide, with 15-30 rounded teeth, reddish-woolly on the lower surface; petioles slender, shorter or somewhat longer than the blades. |
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 open, flat-topped panicle, the bracts reddish-woolly; calyx reddish-woolly, divided about half its length, the 5 ovate lobes 1-2.5 mm. long; petals 5, white, 2-3.5 mm. long, broadly ovate, narrowed abruptly to the base; stamens 10, the filaments awl-shaped, reddish; ovary about 1/3 inferior. |
Fruits | Follicle 7-12 mm. long exclusive of the slender, divergent, stylar beaks. |
Follicles reddish |
Micranthes lyallii |
Micranthes rufidula |
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Flowering time | July-September | February-August |
Habitat | Wet, gravelly meadows and along streams and ponds at high elevations. | Wet open areas, ledges, rock outcroppings from moderate to high 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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Occurring on both sides of the Cascades crest in Washington; British Columbia to California.
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Origin | Native | Native |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Web links |
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