Saxifraga oppositifolia |
Saxifraga vespertina |
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purple mountain saxifrage, purple or purple mountain saxifrage, purple saxifrage, saxifrage à feuilles opposées, twinflower saxifrage |
Matted saxifrage, saxifraga vespertina, spotted saxifrage, yellow dot saxifrage |
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Habit | Plants mat- or cushion-forming (with trailing, ± woody stems), not stoloniferous, rhizomatous. | Plants forming loose mats, (stems trailing), not stoloniferous, rhizomatous. | ||||
Leaves | cauline (marcescent, crowded), opposite (rarely alternate); petiole absent; blade oblong to ± broadly obovate, unlobed, 2–5 mm, leathery, margins entire, bristly-ciliate, with 1(–3) lime-secreting hydathodes (in pit, secretion obvious), apex obtuse, surfaces glabrous. |
cauline (crowded proximally); petiole absent; blade spatulate, unlobed or minutely 3-toothed or -lobed apically, 4–11 mm, leathery, margins entire, (not cartilaginous), stiffly ciliate, apex rounded or obtuse, mucronate, surfaces glabrous. |
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Inflorescences | solitary flowers, ebracteate, 1–5 cm, glabrate or sparsely purple-tipped stipitate-glandular. |
3–6-flowered cymes, 2.5–12 cm, pink- to purple-tipped stipitate-glandular; bracts sessile. |
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Flowers | sepals erect, ovate, margins stiffly ciliate or not, surfaces hairy, stipitate-glandular, or glabrous; petals purple to pink, rarely white, often drying violet, not spotted, obovate to elliptic, (2–)5–12(–20) mm, longer than sepals; ovary ± superior. |
sepals erect, ovate to oblong, margins sparsely ciliate, surfaces glabrous; petals white to cream, yellow-spotted proximally, red- or orange-spotted distally, these often faded in dried specimens, elliptic, 4–6 mm, much longer than sepals; ovary superior. |
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Capsules | ± folliclelike. |
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2n | = 26. |
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Saxifraga oppositifolia |
Saxifraga vespertina |
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Phenology | Flowering summer. | |||||
Habitat | Rocky slopes, ledges, crevices | |||||
Elevation | 100-1800 m [300-5900 ft] | |||||
Distribution |
AK; CO; ID; MT; NY; OR; VT; WA; WY; AB; BC; MB; NS; NT; NU; ON; QC; YT; Eurasia; arctic and alpine
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OR; WA
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Discussion | Subspecies 7 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 136. | FNA vol. 8, p. 142. | ||||
Parent taxa | ||||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Leptasea vespertina, S. bronchialis subsp. vespertina, S. bronchialis var. vespertina | |||||
Name authority | Linnaeus: Sp. Pl. 1: 402. 1753 , | (Small) Fedde: Just’s Bot. Jahresber. 33(1): 613. (1906) | ||||
Web links |
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