Micranthes eriophora |
Micranthes stellaris |
|
---|---|---|
redfuzz saxifrage |
saxifrage étoilée, starry saxifrage |
|
Habit | Plants solitary or in groups, with bulbils on caudices. | Plants tufted or mat-forming, with ± branched caudices or stolonlike rhizomes. |
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 ± absent; blade obovate to elliptic, 1–5 cm, ± fleshy, base cuneate, margins 1–3-toothed in distal 1/2, ciliate, surfaces 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. |
2–10-flowered, open, lax cymes, sometimes solitary flowers, (all or some flowers replaced with bulbils, bulbils sometimes absent), 5–20 cm, sparsely to moderately purple-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, narrowly elliptic to lanceolate; petals white, each with 1–2 basal yellow spots, lanceolate, clawed, 3–8 mm (2 often slightly larger), longer than sepals; filaments linear, flattened; pistils connate 1/2+ their lengths; ovary superior, (to 1/3 adnate to hypanthium). |
Capsules | purplish, valvate. |
green to purple, valvate. |
2n | = 28. |
|
Micranthes eriophora |
Micranthes stellaris |
|
Phenology | Flowering late winter–early summer. | Flowering summer. |
Habitat | Rocky slopes and ledges | Mossy tundra near streams, rocky, gravelly seepage areas |
Elevation | 1900-3000 m (6200-9800 ft) | 0-500 m (0-1600 ft) |
Distribution |
AZ; NM; Mexico (Baja California, Chihuahua)
|
LB; NU; QC; Greenland; Europe |
Discussion | Micranthes stellaris is amphi-Atlantic. In Nunavut, it is known only from Baffin Island. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 8, p. 64. | FNA vol. 8, p. 57. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga eriophora | Saxifraga stellaris |
Name authority | (S. Watson) Small: in N. L. Britton et al., N. Amer. Fl. 22: 142. (1905) | (Linnaeus) Galasso: Atti Soc. Ital. Sci. Nat. Mus. Civico Storia Nat. Milano 146: 231. (2005) |
Web links |