Micranthes spicata |
Micranthes tempestiva |
|
---|---|---|
|
storm saxifrage |
|
Habit | Plants solitary or tufted, short, thick-rhizomatous. | Plants solitary or in groups, with bulbils on caudices. |
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 indistinct (leaves appearing sessile), flattened, 2–8+ mm; blade oblanceolate to obovate, 4–10(–30) mm, fleshy, base cuneate to attenuate, margins entire or minutely denticulate, eciliate, (apex acute to obtuse or rounded), surfaces ± glabrous; (venation pinnate or palmate). |
Inflorescences | 15+-flowered, congested, spikelike thyrses, 15–50(–70) cm, tangled, pink- to purple-tipped stipitate-glandular. |
5–15(–20)-flowered, congested thyrses, 3–10(–15) cm, glabrous or sparsely purple-tipped stipitate-glandular. |
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 spreading, ovate; petals white, not spotted, linear to obovate, clawed, to 1.5 mm, shorter than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary inferior. |
Capsules | green, purplish tinged, ± folliclelike, (basally connate). |
reddish purple, valvate. |
2n | = 10. |
|
Micranthes spicata |
Micranthes tempestiva |
|
Phenology | Flowering summer. | Flowering summer. |
Habitat | Wet tundra, heaths, moist, rocky areas, streamsides | Rocky ledges, slopes, or snow-bed meadows |
Elevation | 0-1700 m (0-5600 ft) | 2400-3200 m (7900-10500 ft) |
Distribution |
AK; YT |
MT |
Discussion | Of conservation concern. Micranthes tempestiva is known only from the Bitterroot Mountains and Anaconda Range. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 8, p. 57. | FNA vol. 8, p. 69. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga spicata | Saxifraga tempestiva |
Name authority | (D. Don) Small: in N. L. Britton et al., N. Amer. Fl. 22: 146. (1905) | (Elvander & Denton) Brouillet & Gornall: J. Bot. Res. Inst. Texas 1: 1021. 2007 , |
Web links |