Saxifraga vespertina |
Saxifraga cespitosa |
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Matted saxifrage, saxifraga vespertina, spotted saxifrage, yellow dot saxifrage |
saxifrage cespiteuse, tuft alpine saxifrage, tuft or tuft alpine saxifrage, tuft saxifrage |
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Habit | Plants forming loose mats, (stems trailing), not stoloniferous, rhizomatous. | Plants densely cushion- to loosely mat-forming, (stems trailing), not stoloniferous, not rhizomatous, with ± woody caudex. |
Leaves | 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. |
basal and proximal cauline, (marcescent, crowded); petiole flattened, 2–6(–12) mm; blade elliptic to obovate or spatulate, 3(–5)-lobed apically (lobes oblong-elliptic), 4–15(–25) mm, ± fleshy, margins entire, sparsely short glandular-ciliate (mostly proximally), (nonsecreting hydathodes present adaxially at each lobe apex), apex obtuse, surfaces sparsely to densely short stipitate-glandular. |
Inflorescences | 3–6-flowered cymes, 2.5–12 cm, pink- to purple-tipped stipitate-glandular; bracts sessile. |
2–5-flowered cymes, sometimes solitary flowers, to 2–15(–20) cm, densely clear- or cream- to pinkish yellow-tipped stipitate-glandular; bracts sessile. |
Flowers | 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. |
sepals erect to spreading, triangular or ovate to elliptic, margins stipitate-glandular, surfaces stipitate-glandular; petals white, proximally greenish to yellowish tinged, not spotted but sometimes striate, elliptic or oblanceolate to obovate, (1.5–)3–7(–15) mm, equaling or longer than sepals; ovary inferior. |
2n | = 26. |
= 78, 80. |
Saxifraga vespertina |
Saxifraga cespitosa |
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Phenology | Flowering summer. | Flowering summer. |
Habitat | Rocky slopes, ledges, crevices | Rock outcrops, crevices, talus, scree slopes, rocky tundra, fellfields, nunataks, stream banks |
Elevation | 100-1800 m (300-5900 ft) | 0-4500 m (0-14800 ft) |
Distribution |
OR; WA
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AK; AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC; MB; NL; NT; NU; ON; QC; YT; Greenland; Europe; Asia (Siberia)
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Discussion | The North American representatives of Saxifraga cespitosa are very variable. It seems futile at this time to recognize any of the infrapecific taxa that have been described, although five are frequently distinguished as either subspecies or varieties. Expressions of all of the purported distinguishing characters overlap or have little apparent geographic or ecologic correlation. The only Southern Hemisphere representatives of Saxifraga are closely related to S. cespitosa. Reports of S. rosacea Moench from southern Greenland are misidentifications of this species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 142. | FNA vol. 8, p. 146. |
Parent taxa | Saxifragaceae > Saxifraga | Saxifragaceae > Saxifraga |
Sibling taxa | ||
Synonyms | Leptasea vespertina, S. bronchialis subsp. vespertina, S. bronchialis var. vespertina | Muscaria delicatula, Muscaria micropetala, Muscaria monticola, S. cespitosa subsp. decipiens, S. cespitosa var. emarginata, S. cespitosa subsp. exaratioides, S. cespitosa subsp. laxiuscula, S. cespitosa var. lemmonii, S. cespitosa var. minima, S. cespitosa subsp. monticola, S. cespitosa subsp. sileneflora, S. cespitosa subsp. subgemmifera, S. cespitosa var. subgemmifera, S. cespitosa subsp. uniflora |
Name authority | (Small) Fedde: Just’s Bot. Jahresber. 33(1): 613. (1906) | Linnaeus: Sp. Pl. 1: 404. 1753 , |
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