Micranthes lyallii |
Micranthes ferruginea |
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Lyall's saxifrage, red-stemmed saxifrage |
rusty saxifrage |
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Habit | Perennial with well-developed rhizomes, often forming small mats. | Perennial from a short, woody base or thick rhizome, the 1-several leafless, freely-branched stems 1.5-3.5 dm. tall, soft-pubescent below and 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 all basal, oblanceolate, 2-10 cm. long and 5-15 mm. wide, with 7-17 teeth, thinly hairy, tapered gradually to broad, winged petioles not clearly differentiated from 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, diffuse panicle extending nearly to the base of the stem; calyx lobed almost to the base, the 5 lobes oblong-ovate, sharply reflexed, 1.5-2.5 mm. long, usually reddish or purplish; petals 5, white, 4-6 mm. long, dimorphic, 3 much broader than the other 2; stamens 10, the filaments slender and white; flowers vary from all normal to mostly replaced by leafy bulblets. |
Fruits | Follicle 7-12 mm. long exclusive of the slender, divergent, stylar beaks. |
Ovary almost completely superior, capsule 4-6 mm. long; carpels 2, fused their length. |
Micranthes lyallii |
Micranthes ferruginea |
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Flowering time | July-September | June-August |
Habitat | Wet, gravelly meadows and along streams and ponds at high elevations. | Open, moist, often rocky areas, from low to middle 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 in the Cascades and Olympic Mountains, and in the mountains of northeastern in Washington; Alaska to south California, east to Idaho, Montana, and Wyoming.
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Origin | Native | Native |
Conservation status | Not of concern | Not of concern |
Sibling taxa | ||
Web links |
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