Micranthes virginiensis

(Michaux) Small

Fl. S.E. U.S., 501. 1903 ,.

Common names: Virginia or early saxifrage saxifrage de Virginie
IllustratedEndemic
Basionym: Saxifraga virginiensis Michaux Fl. Bor.-Amer. 1: 269. 1803
Treatment appears in FNA Volume 8. Treatment on page 61. Mentioned on page 54.

Plants solitary or in clumps, with bulbils on caudices. Leaves basal; petiole flattened, 1–9 cm; blade ovate to elliptic, 2–8 cm, ± fleshy, base attenuate, margins irregularly crenate to serrate, ciliate, surfaces sparsely to ± densely stipitate-glandular and tangled, reddish brown-hairy, adaxially glabrescent. Inflorescences 30+-flowered, (flowers sometimes secund), very open, lax, ± flat-topped thyrses, 6–50 cm, proximally hairy, distally densely purple-tipped stipitate-glandular. Flowers: sepals erect to ascending (even in fruit), ovate to triangular; petals white, not spotted, broadly oblong to elliptic, not or rarely slightly clawed, 3–6 mm, 2+ times as long as sepals; filaments linear, flattened; pistils distinct almost to base; ovary ± superior, (to 1/3 adnate hypanthium). Capsules green to purplish, folliclelike. 2n = 20 (+ 0–6 supernumeraries), 38.


Phenology: Flowering spring.
Habitat: Rocky hillsides, cliffs and shaded rock outcrops, stream banks, wooded slopes
Elevation: 0-1500 m

Distribution

V8 109-distribution-map.gif

Man., N.B., Ont., Que., Ala., Ark., Conn., D.C., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va.

Discussion

Also reported for Micranthes virginiensis is 2n = 28; D. E. Soltis (1983) documented zero to six supernumerary chromosomes in this species and speculated that this report may have included eight supernumeraries.

Selected References

None.

Lower Taxa

None.
... more about "Micranthes virginiensis"
Luc Brouillet +  and Patrick E. Elvander† +
(Michaux) Small +
Saxifraga virginiensis +
Virginia or early saxifrage +  and saxifrage de Virginie +
Man. +, N.B. +, Ont. +, Que. +, Ala. +, Ark. +, Conn. +, D.C. +, Ga. +, Ill. +, Ind. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Vt. +, Va. +  and W.Va. +
0-1500 m +
Rocky hillsides, cliffs and shaded rock outcrops, stream banks, wooded slopes +
Flowering spring. +
Fl. S.E. U.S., +
Illustrated +  and Endemic +
Micranthes virginiensis +
Micranthes +
species +