Micranthes hitchcockiana |
Micranthes reflexa |
|
---|---|---|
Saddle Mountain saxifrage |
Yukon saxifrage |
|
Habit | Plants solitary or in clumps, short-rhizomatous. | Plants solitary or tufted, with bulbils on caudices. |
Leaves | basal; petiole often indistinct, flattened, 5–50 mm; blade elliptic to obovate, 4–12 cm, slightly fleshy, base cuneate, margins serrate to dentate, densely ciliate, surfaces densely tangled-hairy. |
basal; petiole broadly flattened, 1–2 cm; blade elliptic to broadly ovate, 1–3 cm, fleshy, base attenuate, margins shallowly serrate (teeth to 1 mm), densely ciliate, surfaces tangled reddish brown-hairy. |
Inflorescences | 70+-flowered, open, lax, flat-topped thyrses, 15–35 cm, tangled, yellow-tipped stipitate-glandular. |
15+-flowered thyrses with flowers crowded at branch tips, 7–60 cm, ± hairy, also with some purple-tipped glandular hairs. |
Flowers | sepals reflexed, elliptic to ovate; petals white, not spotted, elliptic, clawed, 2–5 mm, longer than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary 1/2 inferior, appearing more superior in fruit. |
sepals reflexed, ovate to triangular; petals white, with 2 basal yellow spots (spots distinct even in dried material), elliptic to spatulate, clawed, 2–4 mm, longer than sepals; filaments strongly club-shaped, (longer than petals); pistils distinct almost to base; ovary superior, (to 1/3 adnate to hypanthium). |
Capsules | greenish to reddish purple, folliclelike. |
green to purplish, folliclelike. |
2n | = 76. |
= 20, 40. |
Micranthes hitchcockiana |
Micranthes reflexa |
|
Phenology | Flowering late spring–summer. | Flowering late spring–summer. |
Habitat | Wet rocks and ledges on mountain-top balds | Heath, tundra, dry to mesic meadows, alpine gravelly slopes and fellfields, open woods |
Elevation | 600-1100 m [2000-3600 ft] | 0-1800 m [0-5900 ft] |
Discussion | Of conservation concern. Micranthes hitchcockiana may have originated from hybridization between M. rufidula and M. oregana (P. E. Elvander 1984; W. E. Perkins 1978). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Micranthes idahoensis, M. marshallii, and M. reflexa form a morphological complex of ecologically and geographically distinct entities in western North America that is much in need of study. The eastern North American M. careyana and M. caroliniana are also morphologically similar to the members of this complex. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Distribution |
OR
|
AK; BC; NT; YT |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga hitchcockiana | Saxifraga reflexa |
Name authority | (Elvander) Brouillet & Gornall: Novon 18: 138. 2008 , | (Hooker) Small: in N. L. Britton et al., N. Amer. Fl. 22: 146. (1905) |
Source | Flora of North America vol. 8, p. 70. | Flora of North America vol. 8, p. 63. |
Web links |