Plants to 1.7 cm, light green. Stem leaves ± twisted when dry, oblong-lanceolate to narrowly-lanceolate, 1--2 mm, acute, usually with ± gradual apiculus; margins irregularly serrate near apex; brood bodies with longitudinal septae, septae curved, of 4--9 cells. Sporophytes not known in North America.

Crevices in vertical rock faces; 3000 m; Ariz.; Europe.

This variety is distinguished by its robust plants, sharply toothed distal leaf margins, and abundant gemmae having curved longitudinal septae. It has been found in the flora only in the White Mts. of Arizona.