Ohio Archidium Moss

Archidium ohioense Schimp.; (B.S.G. Bryol. Eur. (43:) Archid ed. 2. 3 ; hyponym. 1850) C. Miill. Syn. 2 : 517. 1851.
Plants seldom more than 5-10 mm. high, branching by repeated subapical innovations, varying from light-yellow to black: leaves narrowly lanceolate-subulate, seldom 1 mm. long; costa excurrent or ending in the subulate awn ; margins serrulate ; basal cells oblong, becoming rhomboidal or hexagonal, 13 ^ wide by 27-54 m long; perichaetial leaves longer and broader, 1-1.5 mm. long. Autoicous or cladautoicous : antheridia on basal stems or in axillary buds, with 3-4 ecostate bracts: calyptra small, fugacious: capsule sessile in axillary buds, 1-8 on a single plant, seldom more than 25-33 ^ in diameter; walls thin, the cells hexagonal, 27 by 54 m: spores few, 12-24, angled, large, 135-162 /i in diameter, smooth, the contents yellow or brown and filled with oil-globules, maturing from September to April.
Type locality; Harper's Ferry, Virginia.
Distribution: In wet fields or bare places in dry soil from Quebec and New York to Minnesota, Florida, and Louisiana.