UW Burke Herbarium species comparison

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Micranthes lyallii

Micranthes odontoloma
Micranthes lyallii

Lyall's saxifrage, red-stemmed saxifrage

brook saxifrage, streambank saxifrage
Habit Perennial with well-developed rhizomes, often forming small mats.
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.

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.

Fruits

Follicle 7-12 mm. long exclusive of the slender, divergent, stylar beaks.

Micranthes lyallii

Micranthes odontoloma
Flowering time July-September June-September
Habitat Wet, gravelly meadows and along streams and ponds at high elevations. Streambanks, lake shores and wet meadows from low elevations in the mountains to the alpine.
Distribution
Occurring on both sides of the Cascades crest in northern Washington; Alaska to Washington, east to Alberta, Idaho, and Montana.
[WildflowerSearch map]
[BONAP county map]
Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains.
[WildflowerSearch map]
[BONAP county map]
Origin Native Native
Conservation status Not of concern Not of concern
Sibling taxa
M. apetala, M. ferruginea, M. fragosa, M. gormanii, M. idahoensis, M. integrifolia, M. nelsoniana, M. nidifica, M. occidentalis, M. odontoloma, M. oregana, M. rufidula, M. tischii, M. tolmiei
M. apetala, M. ferruginea, M. fragosa, M. gormanii, M. idahoensis, M. integrifolia, M. lyallii, M. nelsoniana, M. nidifica, M. occidentalis, 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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