Micranthes apetala |
Micranthes palmeri |
|
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tiny swamp saxifrage, western swamp saxifrage |
Palmer's saxifrage |
|
Habit | Plants solitary or in clusters, with bulbils on caudices, or short-rhizomatous. | Plants solitary or in clumps, 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 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. |
Inflorescences | 10–25-flowered, congested, glomerate thyrses, 4–15 cm, pink- to purple-tipped stipitate-glandular (hairs uniseriate). |
30+-flowered, (flowers sometimes almost secund), very open, lax thyrses, 6–50 cm, hairy proximally, densely so distally. |
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. |
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). |
Capsules | reddish or purplish, folliclelike. |
green with reddish or purplish tinge, or reddish purple, folliclelike. |
2n | = 38. |
|
Micranthes apetala |
Micranthes palmeri |
|
Phenology | Flowering early spring–summer. | Flowering spring. |
Habitat | Vernally moist meadows, wet depressions on mountain slopes | Rocky, open woodlands |
Elevation | 600-2800 m (2000-9200 ft) | 100-1000 m (300-3300 ft) |
Distribution |
ID; MT; OR; WA
|
AR; OK |
Source | FNA vol. 8, p. 68. | FNA vol. 8, p. 61. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga apetala, Saxifraga integrifolia var. apetala | Saxifraga palmeri, Saxifraga virginiensis var. subintegra |
Name authority | (Piper) Small: in N. L. Britton et al., N. Amer. Fl. 22: 135. 1905 , | Bush: Amer. Midl. Naturalist 11: 221. 1928 , |
Web links |
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