Micranthes eriophora |
Micranthes hitchcockiana |
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redfuzz saxifrage |
Hitchcock's saxifrage, Saddle Mountain saxifrage |
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Habit | Plants solitary or in groups, with bulbils on caudices. | Plants solitary or in clumps, short-rhizomatous. |
Leaves | basal; petiole flattened, 0.5–2.5 cm; blade ovate to elliptic, 1–2 cm, ± fleshy, base attenuate, margins sharply serrate, sparsely to densely ciliate (some glandular-tipped), surfaces densely tangled, reddish brown-hairy abaxially, glabrous adaxially. |
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. |
Inflorescences | 10+-flowered, (flowers often secund), very open, lax, often flat-topped thyrses with distant lateral branches, 6–25 cm, pink- to purplish-tipped stipitate-glandular. |
70+-flowered, open, lax, flat-topped thyrses, 15–35 cm, tangled, yellow-tipped stipitate-glandular. |
Flowers | sepals erect, triangular; petals white, sometimes purplish-tipped, not spotted, obovate to elliptic, not clawed or barely clawed, 4–7 mm, ca. 2 times as long as sepals; filaments linear, flattened; pistils distinct almost to base; ovary 1/3–1/2 inferior. |
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 | purplish, valvate. |
greenish to reddish purple, folliclelike. |
2n | = 76. |
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Micranthes eriophora |
Micranthes hitchcockiana |
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Phenology | Flowering late winter–early summer. | Flowering late spring–summer. |
Habitat | Rocky slopes and ledges | Wet rocks and ledges on mountain-top balds |
Elevation | 1900-3000 m (6200-9800 ft) | 600-1100 m (2000-3600 ft) |
Distribution |
AZ; NM; Mexico (Baja California, Chihuahua)
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OR
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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.) |
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Source | FNA vol. 8, p. 64. | FNA vol. 8, p. 70. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga eriophora | Saxifraga hitchcockiana |
Name authority | (S. Watson) Small: in N. L. Britton et al., N. Amer. Fl. 22: 142. (1905) | (Elvander) Brouillet & Gornall: Novon 18: 138. 2008 , |
Web links |
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