Micranthes howellii |
Micranthes rufidula |
|
---|---|---|
Howell's saxifrage |
rusty-hair saxifrage |
|
Habit | Plants solitary or in groups, with bulbils on caudices. | Plants solitary or in groups, with bulbils on caudices, or rhizomatous. |
Leaves | basal; petiole flattened, 1–4 cm; blade oblong to narrowly ovate, 1–2(–3) cm, ± fleshy, base attenuate, margins sharply serrate, eciliate, surfaces sparsely tangled, reddish brown-hairy abaxially, glabrous adaxially. |
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. |
Inflorescences | 5–10(–20)-flowered, very open, lax, ± flat-topped cymes or thyrses, 5–10(–20) cm, glabrate to sparsely purple-tipped stipitate-glandular; (bracts glabrous). |
15+-flowered, open, flat-topped thyrses, 5–20 cm, purple-tipped stipitate-glandular; (bracts often tangled brown-hairy). |
Flowers | sepals strongly reflexed, elliptic, (surfaces glabrous); petals white, not spotted, obovate to elliptic, clawed, 2.5–4.5 mm, longer than sepals; filaments linear, flattened; pistils distinct almost to base; ovary ± superior. |
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). |
Capsules | purple, valvate. |
greenish to reddish purple, folliclelike. |
2n | = 20, 38, 56, 58. |
|
Micranthes howellii |
Micranthes rufidula |
|
Phenology | Flowering early spring–early summer. | Flowering late winter–summer. |
Habitat | Wet, rocky ledges and crevices | Wet to dry, rocky ledges |
Elevation | 0-900 m (0-3000 ft) | 0-3000 m (0-9800 ft) |
Distribution |
CA; OR
|
CA; OR; WA; BC
|
Source | FNA vol. 8, p. 63. | FNA vol. 8, p. 62. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga howellii | Saxifraga aequidentata, Saxifraga occidentalis subsp. rufidula, Saxifraga occidentalis var. rufidula, Saxifraga rufidula |
Name authority | (Greene) Small: in N. L. Britton et al., N. Amer. Fl. 22: 140. (1905) | Small: in N. L. Britton et al., N. Amer. Fl. 22: 140. (1905) |
Web links |
|