Micranthes texana |
Micranthes odontoloma |
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Texas saxifrage |
brook saxifrage, stream saxifrage, streambank saxifrage |
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Habit | Plants solitary or in clumps, with bulbils on caudices. | Plants solitary or sometimes grouped, rhizomatous. |
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 rounded, 2–30 cm; blade round, 7–40 cm, thin to slightly fleshy, base cordate to truncate, margins regularly dentate, eciliate, surfaces sparsely brownish hairy abaxially, glabrous adaxially. |
Inflorescences | 20+-flowered, branched, ± capitate thyrses, 10–15 cm, hairy, sometimes purple-tipped stipitate-glandular. |
10–30+-flowered, open, lax, flat-topped thyrses, 20–65(–85) cm, glabrous proximally, purple-tipped subsessile-glandular distally. |
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 reflexed, ovate to elliptic; petals white, each with 2 basal yellow spots, round to broadly elliptic, clawed, 3–4.5 mm, longer than sepals; filaments strongly club-shaped, (to 6 mm); pistils connate ca. 1/2 their lengths; ovary superior. |
Capsules | reddish to purplish, valvate. |
green to purple, ± folliclelike. |
2n | = 24, 48. |
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Micranthes texana |
Micranthes odontoloma |
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Phenology | Flowering late winter–spring. | Flowering summer–early autumn. |
Habitat | Sandy flats, rocky, open, wooded areas, granite outcrops | Wet meadows and stream banks |
Elevation | 50-500 m (200-1600 ft) | 1500-4000 m (4900-13100 ft) |
Distribution |
AR; GA; KS; LA; MO; OK; TX |
AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC
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Source | FNA vol. 8, p. 68. | FNA vol. 8, p. 56. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga texana | Saxifraga odontoloma |
Name authority | (Buckley) Small: Fl. S.E. U.S., 501. 1903 , | (Piper) A. Heller: Muhlenbergia 8: 60. 1912 , |
Web links |
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