Micranthes apetala |
Micranthes bryophora |
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tiny swamp saxifrage, western swamp saxifrage |
bud saxifrage |
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Habit | Plants solitary or in clusters, with bulbils on caudices, or short-rhizomatous. | Plants solitary or tufted, with bulbils on caudices. |
Leaves | basal; petiole flattened, 0.5–3 cm; blade ± ovate, 2–5 cm, ± fleshy, base attenuate, margins entire or crenulate, eciliate, surfaces hairy. |
± basal; petiole absent; blade linear to narrowly elliptic, 0.5–4 cm, fleshy, base cuneate, margins subentire, ciliate, surfaces hirsute. |
Inflorescences | 10–25-flowered, congested, glomerate thyrses, 4–15 cm, pink- to purple-tipped stipitate-glandular (hairs uniseriate). |
usually 2–3+-flowered, open, lax thyrses, sometimes solitary flowers, (flowers terminal, proximal usually replaced by bulbils, sometimes bulbils absent), 2–25 cm, stipitate-glandular. (Pedicels reflexed.) Flowers: sepals reflexed, elliptic; petals white, each with 2 basal yellow spots, triangular to broadly ovate, clawed, 3–5 mm, longer than sepals; filaments linear, flattened; pistils connate 1/2+ their lengths; ovary superior, (to 1/3 adnate to hypanthium). |
Flowers | sepals erect to ascending, ovate; petals absent, sometimes 1–5, white to greenish white, not spotted, linear to oblong, clawed, 1–2 mm, much shorter than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary 1/2+ inferior. |
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Capsules | reddish or purplish, folliclelike. |
green to yellow, purple tinged, valvate. |
2n | = 38. |
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Micranthes apetala |
Micranthes bryophora |
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Phenology | Flowering early spring–summer. | Flowering summer. |
Habitat | Vernally moist meadows, wet depressions on mountain slopes | Wet meadows, rocky ledges |
Elevation | 600-2800 m (2000-9200 ft) | 1600-4500 m (5200-14800 ft) |
Distribution |
ID; MT; OR; WA
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CA; ID
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Discussion | Specimens of Micranthes bryophora from the disjunct populations in Idaho have been called Saxifraga bryophora var. tobiasiae; they appear to overlap in morphology with the California plants and are not distinguished here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 68. | FNA vol. 8, p. 58. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga apetala, Saxifraga integrifolia var. apetala | Saxifraga bryophora, Saxifraga bryophora var. tobiasiae |
Name authority | (Piper) Small: in N. L. Britton et al., N. Amer. Fl. 22: 135. 1905 , | (A. Gray) Brouillet & Gornall: J. Bot. Res. Inst. Texas 1: 1020. (2007) |
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