Micranthes subapetala |
Micranthes eriophora |
|
---|---|---|
Yellowstone saxifrage |
redfuzz saxifrage |
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Habit | Plants solitary or in clumps, with bulbils on caudices. | Plants solitary or in groups, with bulbils on caudices. |
Leaves | basal; petiole usually indistinct, flattened, ca. 2 cm; blade ovate or elliptic to oblanceolate, 3–15 cm, fleshy, base cuneate, margins entire or minutely denticulate, ciliate, surfaces hairy. |
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. |
Inflorescences | 30+-flowered, ± constricted (spikelike) to ± open thyrses, 20–75 cm, yellow- to pink- (rarely purplish-) tipped stipitate-glandular. |
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. |
Flowers | sepals reflexed, ovate; petals absent, sometimes 1–5, pink to purplish, not spotted, elliptic, clawed, 1–2 mm, shorter than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary inferior. |
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. |
Capsules | dark purple, valvate. |
purplish, valvate. |
2n | = 76. |
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Micranthes subapetala |
Micranthes eriophora |
|
Phenology | Flowering summer. | Flowering late winter–early summer. |
Habitat | Subalpine and alpine meadows, wet banks, ledges | Rocky slopes and ledges |
Elevation | 1200-3000 m (3900-9800 ft) | 1900-3000 m (6200-9800 ft) |
Distribution |
ID; MT; WY
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AZ; NM; Mexico (Baja California, Chihuahua)
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Discussion | Although the species is usually distinctive, some populations of Micranthes subapetala in northern Wyoming appear more similar to M. hieraciifolia than to typical M. subapetala and may need to be re-evaluated. The distributional disjunction between the two taxa is about 1600 kilometers. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 66. | FNA vol. 8, p. 64. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga subapetala, Saxifraga oregana var. subapetala, Saxifraga rydbergii | Saxifraga eriophora |
Name authority | (E. E. Nelson) Small: in N. L. Britton et al., N. Amer. Fl. 22: 139. 1905 , | (S. Watson) Small: in N. L. Britton et al., N. Amer. Fl. 22: 142. (1905) |
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