Micranthes rufidula |
Micranthes texana |
|
---|---|---|
rusty-hair saxifrage |
Texas saxifrage |
|
Habit | Plants solitary or in groups, with bulbils on caudices, or rhizomatous. | Plants solitary or in clumps, with bulbils on caudices. |
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 flattened, 1–3 cm; blade broadly ovate to oblong, 1.5–3 cm, ± leathery, base ± abruptly attenuate, margins subentire to slightly crenate, eciliate, surfaces glabrate to sparsely hairy. |
Inflorescences | 15+-flowered, open, flat-topped thyrses, 5–20 cm, purple-tipped stipitate-glandular; (bracts often tangled brown-hairy). |
20+-flowered, branched, ± capitate thyrses, 10–15 cm, hairy, sometimes 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 erect, ovate; petals white, not spotted, ± obovate, clawed, 2–3.5 mm, ± equaling sepals; filaments linear, flattened; pistils 3+, connate to 1/2 their lengths; ovary 1/2+ inferior, appearing more superior in fruit. |
Capsules | greenish to reddish purple, folliclelike. |
reddish to purplish, valvate. |
2n | = 20, 38, 56, 58. |
|
Micranthes rufidula |
Micranthes texana |
|
Phenology | Flowering late winter–summer. | Flowering late winter–spring. |
Habitat | Wet to dry, rocky ledges | Sandy flats, rocky, open, wooded areas, granite outcrops |
Elevation | 0-3000 m (0-9800 ft) | 50-500 m (200-1600 ft) |
Distribution |
CA; OR; WA; BC
|
AR; GA; KS; LA; MO; OK; TX |
Source | FNA vol. 8, p. 62. | FNA vol. 8, p. 68. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga aequidentata, Saxifraga occidentalis subsp. rufidula, Saxifraga occidentalis var. rufidula, Saxifraga rufidula | Saxifraga texana |
Name authority | Small: in N. L. Britton et al., N. Amer. Fl. 22: 140. (1905) | (Buckley) Small: Fl. S.E. U.S., 501. 1903 , |
Web links |
|