Micranthes unalaschcensis |
Micranthes hieraciifolia |
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hawkweed-leaf saxifrage |
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Habit | Plants solitary or tufted, with bulbils on caudices or rhizomatous. | Plants mostly solitary, with short caudices, sometimes rhizomatous. |
Leaves | basal; petiole flattened, 1–2 cm; blade broadly obovate to round, 1–3.5 cm, ± fleshy, base cuneate, margins distally toothed, sparsely ciliate, surfaces glabrous. |
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 | 2–10-flowered, open thyrses, racemiform distally, sometimes solitary flowers, 3–15 cm, tangled-hairy. |
30+-flowered, constricted, spikelike thyrses, 7–30 cm, tangled-hairy proximally, densely purple-tipped stipitate-glandular distally. |
Flowers | sepals reflexed, ovate; petals white to cream or pinkish, not spotted, elliptic to oblong, ± clawed, 3.5–5 mm, longer than sepals; filaments linear, flattened; pistils connate 1/2+ their lengths; ovary at least 1/2 inferior. |
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 | dark purple, valvate. |
reddish to purple, valvate. |
2n | = 112, 120. |
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Micranthes unalaschcensis |
Micranthes hieraciifolia |
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Phenology | Flowering summer. | Flowering summer. |
Habitat | Tundra, flushes, stream banks, slopes | Wet, mossy tundra, streamsides, ledges, crevices |
Elevation | 0-600 m (0-2000 ft) | 0-2000 m (0-6600 ft) |
Distribution |
AK; e Asia (Russian Far East) |
AK; MT; BC; NT; NU; YT; Greenland; Europe; Asia |
Discussion | The ovaries and capsules of Micranthes unalaschensis are ovoid, thicker and plumper than those of M. calycina and M. razshivinii, which are conic (E. Hultén 1968). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 8, p. 60. | FNA vol. 8, p. 66. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga unalaschensis, Saxifraga calycina subsp. unalaschensis, Saxifraga davurica var. unalaschensis | Saxifraga hieraciifolia, Saxifraga hieraciifolia var. angusticapsula, Saxifraga hieraciifolia var. rufopilosa |
Name authority | (Sternberg) Gornall & H. Ohba: J. Bot. Res. Inst. Texas 1: 1022. (2007) | (Waldstein & Kitaibel ex Willdenow) Haworth: Saxifrag. Enum., 45. 1821 (as hieracifolia) , |
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