Micranthes odontoloma |
Micranthes integrifolia |
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brook saxifrage, stream saxifrage, streambank saxifrage |
Columbian saxifrage, grassland saxifrage, northwestern saxifrage, smooth leaf saxifrage, swamp saxifrage, whole-leaf saxifrage |
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Habit | Plants solitary or sometimes grouped, rhizomatous. | Plants solitary or in clumps, (sometimes gynodioecious), often with bulbils on caudices, or short-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 flattened, 0.5–4 cm; blade narrowly to broadly ovate, 2–7 cm, ± leathery, base attenuate, margins entire or minutely denticulate, usually ciliate, surfaces sparsely to moderately hairy. |
Inflorescences | 10–30+-flowered, open, lax, flat-topped thyrses, 20–65(–85) cm, glabrous proximally, purple-tipped subsessile-glandular distally. |
(15–)20+-flowered, open to ± congested, conic thyrses, (usually branched, lateral cymules ± open), 12–35 cm, densely pink- to purple-tipped stipitate-glandular. |
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 slightly reflexed, ovate; petals white, not spotted, obovate, clawed, 2–4 mm, longer than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary 1/2+ inferior. |
Capsules | green to purple, ± folliclelike. |
reddish or purplish, folliclelike. |
2n | = 24, 48. |
= 38. |
Micranthes odontoloma |
Micranthes integrifolia |
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Phenology | Flowering summer–early autumn. | Flowering late winter–spring. |
Habitat | Wet meadows and stream banks | Vernally moist meadows, grassy slopes, rock outcrops |
Elevation | 1500-4000 m (4900-13100 ft) | 0-1800 m (0-5900 ft) |
Distribution |
AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC
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CA; OR; WA; BC
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Discussion | The occasional occurrence of sterile pollen has been noted in this as well as in other species of Micranthes (as Saxifraga, K. I. Beamish 1961). Some populations exhibit gynodioecism (P. E. Elvander 1982). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 56. | FNA vol. 8, p. 67. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga odontoloma | Saxifraga integrifolia |
Name authority | (Piper) A. Heller: Muhlenbergia 8: 60. 1912 , | (Hooker) Small: in N. L. Britton et al., N. Amer. Fl. 22: 137. 1905 , |
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