Baie St. Paul, Charlevoix Co., Que. (St. Cyr.) Common on rotten wood at London, Ont. (J. Dearness.) On dead wood, Tobique River, KB. (Hay.) Tay, York Co., N.B. (J. Moser.) On old logs, Skead's Farm, Ottawa; and on trees at Peace River, lat. 56°, N.W.T. (Macoun.) rocks amongst the Rocky Mountains; at Portage River; Beaver Lake and in Upper Canada (Ontario) upon trunks of trees and stones. (Drummond.)
Var. orthoclados, Kindb. (n. sp ?); Canadian Musci, No. 259, in part.
Branches elongate and not curved. All basal leaf-cells orange. Segments linear, not completely free at base, smooth or denticulate at one side, not shorter than the teeth.
The European species differs in the peristomial teeth being pale, generally longer than the linear-subuliform, hyaline-bordered and free segments; the branches of the stem are shorter and curved, only the alar leaf-cells orange. The figure given by Schimper and Lesq. & James representing the peristome does not correspond with the specimens.
On old logs, Skead's Farm, near Ottawa, May 15th, 1885. (Macoun.)