Nuttall's Saxifrage: Cascadia nuttallii (Synonym: Saxifraga nuttallii)
Russethair Saxifrage, Rusty Saxifrage: Micranthes ferruginea (Synonyms: Saxifraga ferruginea, Saxifraga ferruginea var. ferruginea, Saxifraga ferruginea var. foliacea, Saxifraga ferruginea var. macounii, Saxifraga ferruginea var. vreelandii, Saxifraga vreelandii) - Leaves basal, oblanceolate wit 3-4 pairs of teeth at the tip. Inflorescence an open, spreading panicle. White flowers have 3 larger petals with 2 yellow-orange spots near the base and 2 smaller petals with out markings.
Brittle-leaved Saxifrage, Fleshy-leaved Saxifrage, Peak Saxifrage, Swamp Saxifrage: Micranthes fragosa (Synonyms: Saxifraga claytoniifolia, Saxifraga fragosa, Saxifraga fragosa ssp. claytoniaefolia, Saxifraga fragosa ssp. claytoniifolia, Saxifraga fragosa var. fragosa, Saxifraga integrifolia var. claytoniaefolia, Saxifraga integrifolia var. claytoniifolia, Saxifraga nidifica, Saxifraga nidifica var. claytoniifolia) -Very similar to Saxifraga integrifolia. Early spring wildflower to 18 inches tall. Leaves are basal, oval or elliptical in shape, with entire margins. The lower blade tapers abruptly to the thick petiole which is often as long as or longer than the blades. The flowers are white. Common in moist banks and seepage slopes which dry out during the summer.
Gorman's Saxifrage: Micranthes gormanii (Synonyms: Saxifraga gormanii, Saxifraga occidentalis var. dentata, Saxifraga occidentalis var. gormannii) -
Idaho Saxifrage: Micranthes idahoensis (Synonyms: Saxifraga idahoensis, Saxifraga marshallii ssp. idahoensis, Saxifraga marshallii var. idahoensis, Saxifraga occidentalis var. idahoensis) -
Northwestern Saxifrage, Common Western Saxifrage, Wholeleaf Saxifrage: Micranthes integrifolia (Synonyms: Saxifraga integrifolia, Saxifraga integrifolia var. integrifolia, Saxifraga laevicarpa) - Very similar to Saxifraga nidifica var. claytoniifolia. Early spring wildflower to 18 inches tall. Leaves are basal, oval or elliptical in shape, with entire margins. The lower blade tapers more gradually to broad petioles rarely as long as the blade. The flowers are white. Common in moist banks and seepage slopes which dry out during the summer.
Hybrid Saxifrage: Micranthes integrifolia x Micranthes rufidula -
Marshall's Saxifrage: Micranthes marshallii (Synonyms: Saxifraga hallii, Saxifraga marshallii) -
Dotted Saxifrage, Brook Saxifrage: Micranthes nelsoniana ssp. cascadensis (Synonyms: Saxifraga nelsoniana ssp. cascadensis, Saxifraga punctata, Saxifraga punctata var. cascadensis) - Basal leaves with round to kidney-shape. Margins with numerous triangular teeth. Each of the 5 white petals is narrowly to broadly oblong or oblong-elliptic, and each has 2 yellow dots near the base. Petals all the same size and shape. Could be confused with both Saxifraga mertensiana and Saxifraga odontoloma.
Nesting Saxifrage (formerly Northwestern Saxifrage): Micranthes nidifica (Synonyms: Micranthes plantaginea, Saxifraga columbiana, Saxifraga integrifolia var. columbiana, Saxifraga integrifolia var. leptopetala, Saxifraga nidifica, Saxifraga nidifica var. nidifica, Saxifraga plantaginea) -
Alberta Saxifrage, Redwool Saxifrage, Western Mountain Saxifrage, Western Saxifrage: Micranthes occidentalis (Synonyms: Micranthes lata, Micranthes saximontana, Saxifraga occidentalis, Saxifraga occidentalis ssp. occidentalis, Saxifraga occidentalis var. allenii, Saxifraga occidentalis var. occidentalis, Saxifraga occidentalis var. wallowensis, Saxifraga reflexa, Saxifraga reflexa ssp. occidentalis) - Inflorescence pyramidal. Stems, calyces and branches of inflorescence greenish and generally lacking reddish hairs. Found on moist rocky banks which dry out in summer.
Brook Saxifrage, Stream Saxifrage: Micranthes odontoloma (Synonyms: Saxifraga aestivalis, Saxifrage arguta, Saxifraga odontoloma, Saxifraga punctata ssp. punctata, Saxifraga punctata var. arguta) - Leaves all basal and kidney-shaped with numerous triangular teeth. Petioles 2-3 times longer than the blades. Flowers on cymose panicles. Petals white and orbicular in shape, although the petals may be different sizes and shapes on the same flower. Could be confused with Saxifraga mertensiana and Saxifraga nelsoniana.
Bog Saxifrage, Oregon Saxifrage: Micranthes oregana (Synonyms: Micranthes arnoglossa, Micranthes brachypus, Saxifraga montanensis, Saxifraga oregana, Saxifraga oregana var. montanensis, Saxifraga oregana var. oregana, Saxifraga oregana var. sierrae) - Basal leaves large, oblanceolate with moderately acute tips. Inflorescence narrowly to widely cymose-paniculate. Petals white to greenish-white, or absent. Petals may be of different sizes.
Rustyhair Saxifrage, Western Saxifrage: Micranthes rufidula (Synonyms: Saxifraga aequidentata, Saxifraga klickitatensis, Saxifraga occidentalis ssp. rufidula, Saxifraga occidentalis var. aequidentata, Saxifraga occidentalis var. rufidula, Saxifraga rufidula) - Early spring wildflower to 10 inches high. Leaves basal, ovate with teeth. Petals white. Inflorescence flat-topped. Stems, calyces and branches of inflorescence often with reddish hairs. Found on moist rocky banks which dry out in summer.
Matted Saxifrage, Spotted Saxifrage: Saxifraga austromontana (Synonyms: Ciliaria austromontana, Saxifraga austromontana, Saxifraga bronchialis ssp. austromontana, Saxifraga bronchialis var. austromontana) - Low growing mat or cushion forming plant. Leaves linear and pointed. Leaves both on basal stems and flowering stems. Petals spotted with red-purple dots at the tip, yellow-orange spots near the base. If present, it is at high elevations on the Washington side of the river?
Tufted Alpine Saxifrage, Tufted Saxifrage: Saxifraga cespitosa (Synonyms: Saxifraga caespitosa, Saxifraga caespitosa ssp. caespitosa, Saxifraga caespitosa ssp. subgemmifera, Saxifraga caespitosa var. cespitosa, Saxifraga caespitosa var. subgemmifera, Saxifraga cespitosa ssp. cespitosa, Saxifraga cespitosa ssp. subgemmifera, Saxifraga cespitosa var. cespitosa, Saxifraga cespitosa var. subgemmifera) - Low growing mat or cushion forming plant. Leaves narrowly lanceolate with 3 (sometimes 5) lobes at the tip. Flowers white with fairly large, rounded petals. No markings on petals.
Merten's Saxifrage, Wood Saxifrage, Woodland Saxifrage: Saxifraga mertensiana (Synonym: Saxifraga mertensiana var. eastwoodiae) - Blades of basal and stem leaves round with large teeth on the margins, each tooth tipped with 3 smaller teeth. Flowers small, in an open panicle, with 5 narrow white petals. Prefers wet places. Could be confused with both Saxifraga nelsoniana and Saxifraga odontoloma.
Matted Saxifrage, Spotted Saxifrage, Yellowdot Saxifrage: Saxifraga vespertina (Synonyms: Ciliaria vespertina, Saxifraga bronchialis ssp. vespertina, Saxifraga bronchialis var. vespertina) - Low growing mat or cushion forming plant. Leaves oblong to spatulate, only occasionally 3-lobed at the tips, otherwise, the tips are rounded. Petals spotted with red-purple dots at the tip, yellow-orange spots near the base.