Micranthes texana |
Micranthes nidifica |
|
---|---|---|
Texas saxifrage |
Columbia saxifrage, meadow saxifrage, peak saxifrage, swamp saxifrage |
|
Habit | Plants solitary or in clumps, with bulbils on caudices. | Plants solitary or in clumps, with bulbils on caudices. |
Leaves | 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. |
basal; petiole flattened, 1.5–5.5 cm; blade ± ovate to elliptic, 3–6(–7.5) cm, fleshy, base attenuate, margins entire or minutely denticulate, ciliate, surfaces glabrate to sparsely hairy. |
Inflorescences | 20+-flowered, branched, ± capitate thyrses, 10–15 cm, hairy, sometimes purple-tipped stipitate-glandular. |
30+-flowered, lax, cylindric thyrses with 3–10, ± compact cymules, 10–30 cm, ± densely pink- to purple-tipped stipitate-glandular. |
Flowers | 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. |
sepals strongly reflexed, broadly ovate to deltate; petals white to greenish white, not spotted, usually elliptic to obovate, clawed, 1–1.9 mm, equaling or shorter than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary 1/2+ inferior. |
Capsules | reddish to purplish, valvate. |
green or reddish purple, folliclelike. |
2n | = 38. |
|
Micranthes texana |
Micranthes nidifica |
|
Phenology | Flowering late winter–spring. | Flowering spring–summer. |
Habitat | Sandy flats, rocky, open, wooded areas, granite outcrops | Open meadows, shrub-lands, gravelly slopes, edges of and open pine forests |
Elevation | 50-500 m (200-1600 ft) | 100-2600 m (300-8500 ft) |
Distribution |
AR; GA; KS; LA; MO; OK; TX |
CA; ID; MT; NV; OR; UT; WA; WY; BC
|
Discussion | Micranthes nidifica is polymorphic and merges to some extent with M. fragosa in limited areas of southern Washington and northern Oregon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 8, p. 68. | FNA vol. 8, p. 68. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga texana | Saxifraga nidifica, M. plantaginea, Saxifraga columbiana, Saxifraga integrifolia var. columbiana, Saxifraga integrifolia var. leptopetala, Saxifraga montana, Saxifraga plantaginea |
Name authority | (Buckley) Small: Fl. S.E. U.S., 501. 1903 , | (Greene) Small: in N. L. Britton et al., N. Amer. Fl. 22: 134. (1905) |
Web links |
|