Micranthes texana |
Micranthes tempestiva |
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Texas saxifrage |
storm saxifrage |
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Habit | Plants solitary or in clumps, with bulbils on caudices. | Plants solitary or in groups, 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 indistinct (leaves appearing sessile), flattened, 2–8+ mm; blade oblanceolate to obovate, 4–10(–30) mm, fleshy, base cuneate to attenuate, margins entire or minutely denticulate, eciliate, (apex acute to obtuse or rounded), surfaces ± glabrous; (venation pinnate or palmate). |
Inflorescences | 20+-flowered, branched, ± capitate thyrses, 10–15 cm, hairy, sometimes purple-tipped stipitate-glandular. |
5–15(–20)-flowered, congested thyrses, 3–10(–15) cm, glabrous or sparsely 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 spreading, ovate; petals white, not spotted, linear to obovate, clawed, to 1.5 mm, shorter than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary inferior. |
Capsules | reddish to purplish, valvate. |
reddish purple, valvate. |
2n | = 10. |
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Micranthes texana |
Micranthes tempestiva |
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Phenology | Flowering late winter–spring. | Flowering summer. |
Habitat | Sandy flats, rocky, open, wooded areas, granite outcrops | Rocky ledges, slopes, or snow-bed meadows |
Elevation | 50-500 m (200-1600 ft) | 2400-3200 m (7900-10500 ft) |
Distribution |
AR; GA; KS; LA; MO; OK; TX |
MT |
Discussion | Of conservation concern. Micranthes tempestiva is known only from the Bitterroot Mountains and Anaconda Range. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 68. | FNA vol. 8, p. 69. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga texana | Saxifraga tempestiva |
Name authority | (Buckley) Small: Fl. S.E. U.S., 501. 1903 , | (Elvander & Denton) Brouillet & Gornall: J. Bot. Res. Inst. Texas 1: 1021. 2007 , |
Web links |