Micranthes palmeri |
Micranthes nidifica |
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Palmer's saxifrage |
Columbia saxifrage, meadow saxifrage, peak saxifrage, swamp saxifrage |
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Habit | Plants solitary or in clumps, with bulbils on caudices. | Plants solitary or in clumps, with bulbils on caudices. |
Leaves | basal; petiole flattened, 1–9 cm; blade ovate to elliptic, 2–8 cm, slightly fleshy, base attenuate, margins entire or subentire, ciliate, surfaces tangled, reddish brown-hairy. |
basal; petiole flattened, 1.5–5.5 cm; blade ± ovate to elliptic, 3–6(–7.5) cm, fleshy, base attenuate, margins entire or minutely denticulate, ciliate, surfaces glabrate to sparsely hairy. |
Inflorescences | 30+-flowered, (flowers sometimes almost secund), very open, lax thyrses, 6–50 cm, hairy proximally, densely so distally. |
30+-flowered, lax, cylindric thyrses with 3–10, ± compact cymules, 10–30 cm, ± densely pink- to purple-tipped stipitate-glandular. |
Flowers | sepals erect to ascending, ovate to triangular; petals white, not spotted, broadly oblong to elliptic, not clawed, 3–6 mm, 2+ times as long as sepals; filaments linear, flattened; pistils distinct almost to base; ovary ± superior, (to 1/3 adnate to hypanthium). |
sepals strongly reflexed, broadly ovate to deltate; petals white to greenish white, not spotted, usually elliptic to obovate, clawed, 1–1.9 mm, equaling or shorter than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary 1/2+ inferior. |
Capsules | green with reddish or purplish tinge, or reddish purple, folliclelike. |
green or reddish purple, folliclelike. |
2n | = 38. |
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Micranthes palmeri |
Micranthes nidifica |
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Phenology | Flowering spring. | Flowering spring–summer. |
Habitat | Rocky, open woodlands | Open meadows, shrub-lands, gravelly slopes, edges of and open pine forests |
Elevation | 100-1000 m (300-3300 ft) | 100-2600 m (300-8500 ft) |
Distribution |
AR; OK |
CA; ID; MT; NV; OR; UT; WA; WY; BC
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Discussion | Micranthes nidifica is polymorphic and merges to some extent with M. fragosa in limited areas of southern Washington and northern Oregon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 61. | FNA vol. 8, p. 68. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga palmeri, Saxifraga virginiensis var. subintegra | Saxifraga nidifica, M. plantaginea, Saxifraga columbiana, Saxifraga integrifolia var. columbiana, Saxifraga integrifolia var. leptopetala, Saxifraga montana, Saxifraga plantaginea |
Name authority | Bush: Amer. Midl. Naturalist 11: 221. 1928 , | (Greene) Small: in N. L. Britton et al., N. Amer. Fl. 22: 134. (1905) |
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