Micranthes rufidula |
Micranthes spicata |
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rusty-hair saxifrage |
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Habit | Plants solitary or in groups, with bulbils on caudices, or rhizomatous. | Plants solitary or tufted, short, thick-rhizomatous. |
Leaves | basal; petiole flattened, 4–8 cm; blade ovate to elliptic, 1–4 cm, fleshy, base attenuate to ± truncate, margins serrate (15–30- toothed), eciliate, surfaces densely tangled, reddish brown-hairy abaxially, glabrous adaxially. |
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. |
Inflorescences | 15+-flowered, open, flat-topped thyrses, 5–20 cm, purple-tipped stipitate-glandular; (bracts often tangled brown-hairy). |
15+-flowered, congested, spikelike thyrses, 15–50(–70) cm, tangled, pink- to purple-tipped stipitate-glandular. |
Flowers | sepals spreading, ovate, (often tangled brown-hairy); petals white, not spotted, ovate to elliptic, clawed, 2–4 mm, longer than sepals; filaments linear, flattened to slightly club-shaped; pistils distinct almost to base; ovary superior, (to 1/3 adnate to hypanthium). |
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). |
Capsules | greenish to reddish purple, folliclelike. |
green, purplish tinged, ± folliclelike, (basally connate). |
2n | = 20, 38, 56, 58. |
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Micranthes rufidula |
Micranthes spicata |
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Phenology | Flowering late winter–summer. | Flowering summer. |
Habitat | Wet to dry, rocky ledges | Wet tundra, heaths, moist, rocky areas, streamsides |
Elevation | 0-3000 m (0-9800 ft) | 0-1700 m (0-5600 ft) |
Distribution |
CA; OR; WA; BC
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AK; YT |
Source | FNA vol. 8, p. 62. | FNA vol. 8, p. 57. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga aequidentata, Saxifraga occidentalis subsp. rufidula, Saxifraga occidentalis var. rufidula, Saxifraga rufidula | Saxifraga spicata |
Name authority | Small: in N. L. Britton et al., N. Amer. Fl. 22: 140. (1905) | (D. Don) Small: in N. L. Britton et al., N. Amer. Fl. 22: 146. (1905) |
Web links |
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