Micranthes odontoloma |
Micranthes hieraciifolia |
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brook saxifrage, stream saxifrage, streambank saxifrage |
hawkweed-leaf saxifrage |
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Habit | Plants solitary or sometimes grouped, rhizomatous. | Plants mostly solitary, with short caudices, sometimes rhizomatous. |
Leaves | basal; petiole rounded, 2–30 cm; blade round, 7–40 cm, thin to slightly fleshy, base cordate to truncate, margins regularly dentate, eciliate, surfaces sparsely brownish hairy abaxially, glabrous adaxially. |
basal; petiole sometimes indistinct, flattened, 2–4 cm; blade ovate to elliptic, 2–6 cm, ± fleshy, base cuneate to slightly attenuate, margins usually ± evenly serrulate to denticulate, ciliate, surfaces sparsely to densely hairy and sparsely stipitate-glandular. |
Inflorescences | 10–30+-flowered, open, lax, flat-topped thyrses, 20–65(–85) cm, glabrous proximally, purple-tipped subsessile-glandular distally. |
30+-flowered, constricted, spikelike thyrses, 7–30 cm, tangled-hairy proximally, densely purple-tipped stipitate-glandular distally. |
Flowers | sepals reflexed, ovate to elliptic; petals white, each with 2 basal yellow spots, round to broadly elliptic, clawed, 3–4.5 mm, longer than sepals; filaments strongly club-shaped, (to 6 mm); pistils connate ca. 1/2 their lengths; ovary superior. |
sepals spreading to reflexed, triangular to ovate; petals dark reddish purple, not spotted, narrowly ovate to lanceolate, slightly clawed, 1.5–3 mm, equaling sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary 1/2+ inferior. |
Capsules | green to purple, ± folliclelike. |
reddish to purple, valvate. |
2n | = 24, 48. |
= 112, 120. |
Micranthes odontoloma |
Micranthes hieraciifolia |
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Phenology | Flowering summer–early autumn. | Flowering summer. |
Habitat | Wet meadows and stream banks | Wet, mossy tundra, streamsides, ledges, crevices |
Elevation | 1500-4000 m (4900-13100 ft) | 0-2000 m (0-6600 ft) |
Distribution |
AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC
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AK; MT; BC; NT; NU; YT; Greenland; Europe; Asia |
Discussion | In British Columbia, Micranthes hieraciifolia is disjunct between the far north and the Okanagan-Thompson Plateau in the south (S. A. Harris 2003). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 56. | FNA vol. 8, p. 66. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga odontoloma | Saxifraga hieraciifolia, Saxifraga hieraciifolia var. angusticapsula, Saxifraga hieraciifolia var. rufopilosa |
Name authority | (Piper) A. Heller: Muhlenbergia 8: 60. 1912 , | (Waldstein & Kitaibel ex Willdenow) Haworth: Saxifrag. Enum., 45. 1821 (as hieracifolia) , |
Web links |
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