Micranthes spicata |
Micranthes unalaschcensis |
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Habit | Plants solitary or tufted, short, thick-rhizomatous. | Plants solitary or tufted, with bulbils on caudices or rhizomatous. |
Leaves | basal; petiole rounded, 4–15 cm; blade round, ovate, or reniform, 3–15 cm, thin, base cordate, margins serrate to dentate, ciliate, surfaces hairy to glabrate. |
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. |
Inflorescences | 15+-flowered, congested, spikelike thyrses, 15–50(–70) cm, tangled, pink- to purple-tipped stipitate-glandular. |
2–10-flowered, open thyrses, racemiform distally, sometimes solitary flowers, 3–15 cm, tangled-hairy. |
Flowers | sepals reflexed, oblong to ovate; petals cream to yellowish, not spotted, oblong, not clawed, 3–4.5 mm, longer than sepals; filaments narrowly club-shaped; pistils connate at least 1/2 their lengths; ovary superior, (to 1/3 adnate to hypanthium). |
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. |
Capsules | green, purplish tinged, ± folliclelike, (basally connate). |
dark purple, valvate. |
Micranthes spicata |
Micranthes unalaschcensis |
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Phenology | Flowering summer. | Flowering summer. |
Habitat | Wet tundra, heaths, moist, rocky areas, streamsides | Tundra, flushes, stream banks, slopes |
Elevation | 0-1700 m (0-5600 ft) | 0-600 m (0-2000 ft) |
Distribution |
AK; YT |
AK; e Asia (Russian Far East) |
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.) |
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Source | FNA vol. 8, p. 57. | FNA vol. 8, p. 60. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga spicata | Saxifraga unalaschensis, Saxifraga calycina subsp. unalaschensis, Saxifraga davurica var. unalaschensis |
Name authority | (D. Don) Small: in N. L. Britton et al., N. Amer. Fl. 22: 146. (1905) | (Sternberg) Gornall & H. Ohba: J. Bot. Res. Inst. Texas 1: 1022. (2007) |
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