Micranthes apetala |
Micranthes texana |
|
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tiny swamp saxifrage, western swamp saxifrage |
Texas saxifrage |
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Habit | Plants solitary or in clusters, with bulbils on caudices, or short-rhizomatous. | Plants solitary or in clumps, with bulbils on caudices. |
Leaves | basal; petiole flattened, 0.5–3 cm; blade ± ovate, 2–5 cm, ± fleshy, base attenuate, margins entire or crenulate, eciliate, surfaces hairy. |
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 | 10–25-flowered, congested, glomerate thyrses, 4–15 cm, pink- to purple-tipped stipitate-glandular (hairs uniseriate). |
20+-flowered, branched, ± capitate thyrses, 10–15 cm, hairy, sometimes purple-tipped stipitate-glandular. |
Flowers | sepals erect to ascending, ovate; petals absent, sometimes 1–5, white to greenish white, not spotted, linear to oblong, clawed, 1–2 mm, much shorter than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary 1/2+ inferior. |
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 | reddish or purplish, folliclelike. |
reddish to purplish, valvate. |
2n | = 38. |
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Micranthes apetala |
Micranthes texana |
|
Phenology | Flowering early spring–summer. | Flowering late winter–spring. |
Habitat | Vernally moist meadows, wet depressions on mountain slopes | Sandy flats, rocky, open, wooded areas, granite outcrops |
Elevation | 600-2800 m (2000-9200 ft) | 50-500 m (200-1600 ft) |
Distribution |
ID; MT; OR; WA
|
AR; GA; KS; LA; MO; OK; TX |
Source | FNA vol. 8, p. 68. | FNA vol. 8, p. 68. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga apetala, Saxifraga integrifolia var. apetala | Saxifraga texana |
Name authority | (Piper) Small: in N. L. Britton et al., N. Amer. Fl. 22: 135. 1905 , | (Buckley) Small: Fl. S.E. U.S., 501. 1903 , |
Web links |
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