Micranthes hitchcockiana |
Micranthes bryophora |
|
---|---|---|
Saddle Mountain saxifrage |
bud 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 absent; blade linear to narrowly elliptic, 0.5–4 cm, fleshy, base cuneate, margins subentire, ciliate, surfaces hirsute. |
Inflorescences | 70+-flowered, open, lax, flat-topped thyrses, 15–35 cm, tangled, yellow-tipped stipitate-glandular. |
usually 2–3+-flowered, open, lax thyrses, sometimes solitary flowers, (flowers terminal, proximal usually replaced by bulbils, sometimes bulbils absent), 2–25 cm, stipitate-glandular. (Pedicels reflexed.) Flowers: sepals reflexed, elliptic; petals white, each with 2 basal yellow spots, triangular to broadly ovate, clawed, 3–5 mm, longer than sepals; filaments linear, flattened; pistils connate 1/2+ their lengths; ovary superior, (to 1/3 adnate to hypanthium). |
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. |
|
Capsules | greenish to reddish purple, folliclelike. |
green to yellow, purple tinged, valvate. |
2n | = 76. |
|
Micranthes hitchcockiana |
Micranthes bryophora |
|
Phenology | Flowering late spring–summer. | Flowering summer. |
Habitat | Wet rocks and ledges on mountain-top balds | Wet meadows, rocky ledges |
Elevation | 600-1100 m [2000-3600 ft] | 1600-4500 m [5200-14800 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.) |
Specimens of Micranthes bryophora from the disjunct populations in Idaho have been called Saxifraga bryophora var. tobiasiae; they appear to overlap in morphology with the California plants and are not distinguished here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Distribution |
OR
|
CA; ID
|
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga hitchcockiana | Saxifraga bryophora, Saxifraga bryophora var. tobiasiae |
Name authority | (Elvander) Brouillet & Gornall: Novon 18: 138. 2008 , | (A. Gray) Brouillet & Gornall: J. Bot. Res. Inst. Texas 1: 1020. (2007) |
Source | Flora of North America vol. 8, p. 70. | Flora of North America vol. 8, p. 58. |
Web links |