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Micranthes lyallii

Lyall's saxifrage, red-stemmed 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 spicata

Flowering time July-September
Habitat Wet, gravelly meadows and along streams and ponds at high elevations.
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]
[BONAP county map]
Origin Native
Conservation status 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. odontoloma, M. oregana, M. rufidula, M. tischii, M. tolmiei
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