Seligeria doniana

Seligeria doniana (vSmith) C. Miill. Syn. 1 : 420. 1848
Cymnoslomum Donnianum Smith, Engl. Bot. pi. 1582. 1806. Anodus fJonianus B.S.G. Bryol. Eur. (33-36?) Anodus 3. 1846. Seligeria Donnii Lindb. Oefv. Sv. Vet.-Akad. FOrh. 21: 187. 1864.
Plants very small, 2-5 mm. high, gregarious; stems erect, rarely 1 mm. high, simple, or with basal branches: leaves crowded, straight, 1 mm. long, subulate from a bfoader, serrulate base; costa broad, excurrent, filling the awn or disappearing below the apex in the lower leaves; basal cells oblong; margins crenulate-scrrulate ; perichaetial leaves shorter, not subulate, broader and sheathing, serrate. Autoicous; antheridia in basal buds, without paraphyses: seta 1-3 mm. long, exserted, erect: calyptra cucullate: capsule minute, 0.5 mm. or less, ovoid
pyriform, becoming hemispheric and broader when empty; neck short, stomatose; walls thickened, the cells oblong or hexagonal, irregular; mouth bordered by 4-5 rows of cells; lid conic, oblique, bordered; peristome none: spores smooth, 8-lOyu in diameter, maturing in summer.
Type locality; England.
Distribution: In pockets and hollows of sandstone and limestone rocks, rare; Ontario; Maine; New York; New Jersey; Ohio; Minnesota to Alberta.