Saxifraga adscendens |
Saxifraga eschscholtzii |
|
---|---|---|
ascending saxifrage, rock saxifrage, wedge-leaf saxifrage |
ciliate saxifrage, cushion saxifrage |
|
Habit | Plants biennial, sometimes behaving as winter annual, solitary or tufted, not stoloniferous, with caudex. | Plants cushion-forming, rounded, sometimes mat-forming (then stems trailing), (stems slightly woody at base), not stoloniferous, rhizomatous, with caudex. |
Leaves | basal and cauline, (basal persistent, compact); petiole absent (cuneate base ± petiolelike); blade oblanceolate to obovate, (2–)3(–5)-toothed or shallowly lobed apically, rarely unlobed (distal often so), (lobes forwardly directed), (2–)4–15 mm, slightly fleshy, margins entire, stipitate glandular-ciliate, apex obtuse, surfaces glabrate to stipitate-glandular. |
basal (sometimes cauline on trailing stems), (closely imbricate); petiole absent; blade round to broadly obovate, unlobed, 1–4 mm, ± fleshy, margins entire, stiffly bristly-ciliate, apex obtuse or rounded, surfaces glabrous. |
Inflorescences | (2–)6–15(–40)-flowered thyrses, (1–)4–25 cm, densely purple-tipped stipitate-glandular; bracts sessile. |
solitary flowers, to 1 cm, glabrous; bracts sessile. |
Flowers | sepals erect, (usually reddish purple), ovate or triangular to oblong, margins stipitate glandular-ciliate, surfaces stipitate-glandular; petals white, not spotted, obovate to oblanceolate, (2–)3–6 mm, equaling or longer than sepals; ovary inferior. |
unisexual (plants dioecious); sepals spreading in flower, reflexed in fruit, (purple), triangular to ovate, margins ciliate, surfaces hairy; petals yellow, drying cream to brown, not spotted, linear to oblanceolate, 1–2.5 mm, ± equaling sepals; ovary superior. |
2n | = 22. |
= 12. |
Saxifraga adscendens |
Saxifraga eschscholtzii |
|
Phenology | Flowering summer. | Flowering early summer. |
Habitat | Moist, often shaded cliff ledges, screes, talus slopes, gravelly stream banks, gravelly alpine meadows | Cliffs and gravelly spits, rocky outcrops, gravel shores, tundra |
Elevation | 1200-4200 m (3900-13800 ft) | 0-2000+ m (0-6600+ ft) |
Distribution |
AK; CO; ID; MT; NV; OR; UT; WA; WY; AB; BC; NT; YT; Europe
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AK; NT; YT; Asia (Siberia) |
Discussion | Although the North American plants of Saxifraga adscendens have been known as subsp. oregonensis, expressions of the supposed distinguishing characters appear to overlap completely with the variation found in Europe. The plants produce bulbils on caudices. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 8, p. 145. | FNA vol. 8, p. 139. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Muscaria adscendens, S. adscendens subsp. oregonensis, S. adscendens var. oregonensis, S. oregonensis | |
Name authority | Linnaeus: Sp. Pl. 1: 405. 1753 , | Sternberg: Revis. Saxifrag., suppl. 1: 9. 1822 , |
Web links |