Saxifraga aleutica |
Saxifraga mertensiana |
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Aleut saxifrage, Aleutian saxifrage |
Merten's or wood or woodland saxifrage, Mertens' saxifrage, wood saxifrage, woodland saxifrage |
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Habit | Plants mat-forming, not stoloniferous, rhizomatous. | Plants solitary or in clumps, not stoloniferous, with caudex or short-rhizomatous. |
Leaves | basal and cauline, (basal crowded, cauline 1–2); petiole absent; blade oblanceolate to spatulate, unlobed, 3–6 mm, fleshy, margins entire, eciliate, apex obtuse, surfaces glabrous. |
basal and cauline, (basal persistent, cauline ± inconspicuous); petiole rounded, 2–20 mm; blade round to reniform, irregularly shallowly lobed, 20–80(–100) mm, thin, margins serrate, stipitate glandular-ciliate, apex obtuse to rounded, surfaces sparsely hairy. |
Inflorescences | solitary flowers, 0.5–2 cm, densely pink- to purple-tipped stipitate-glandular; bracts sessile. |
30+-flowered, open, much-branched thyrses, usually some or all flowers replaced by bulbils (sometimes bulbils absent), 15–40 cm, dark purple-tipped stipitate-glandular; bracts (± inconspicuous), petiolate or sessile. |
Flowers | sepals reflexed, oblong to ovate or triangular, margins stipitate-glandular, surfaces glabrous; petals greenish yellow, not spotted, elliptic to narrowly obovate, 2–3 mm, ± equaling sepals; ovary superior. |
sepals reflexed (at least in fruit), ovate to elliptic, margins eciliate, surfaces sparsely stipitate-glandular or glabrous; petals white, not spotted, narrowly ovate to elliptic, (3–)4–6 mm, longer than sepals; filaments strongly club-shaped; ovary superior. |
2n | = 36, ca. 48, 50. |
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Saxifraga aleutica |
Saxifraga mertensiana |
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Phenology | Flowering summer. | Flowering spring–summer. |
Habitat | Gravelly areas, hill and mountain tops | Moist to wet stream banks, mossy cliffs and slopes, waterfall spray zones |
Elevation | 200-1200 m (700-3900 ft) | 0-2500 m (0-8200 ft) |
Distribution |
AK |
AK; CA; ID; MT; OR; WA; AB; BC
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Discussion | Saxifraga aleutica is found on the Aleutian Islands. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Plants of Saxifraga mertensiana bear bulbils in the axils of basal leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 140. | FNA vol. 8, p. 146. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | S. mertensiana var. eastwoodiae | |
Name authority | Hultén: Svensk Bot. Tidskr. 30: 522, fig. 4. 1936 , | Bongard: Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 2: 141. 1832 , |
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