H. trichomanoides, Lesq. James, Mosses of N. America, 285; Canadian
Very nearly allied to Somalia trichomanoides; differs in the leaves being longer, rather Ungulate, the lowest basal cells yellow, the perichetial leaves more suddenly narrowed to the very short acumen, the segments of the peristome cleft between the articulations.
The Asiatic Somalia obtusata (in herb. C. Mueller) is very different, probably not found in North America.
On rocks about Lake Superior; but rare. (Drummond.) On trees at Pirate's Cove, Straits of Canso, N.S.; on earth along Hunter's River, Prince Edward Island; on the face of perpendicular rocks, Ste. Anne des Monts River, Gaspé Co., Que.; on the bases of trees west of Ottawa, and on limestone rocks in McKay's woods, Ottawa; on rocky ledges, Flinton, Hastings Co., and at Sudbury Junction and along the Dawson Route, west of Lake Superior, Ont. (Macoun.) On rocks, New Harbor, Newfoundland. (Rev. A. Waghorne.) On rocks, Canaan Forks, Queen's Co., N.B. (J. Moser.) On rocks along the Columbia River above
Revelstoke; and on logs on the overflowed banks of the Fraser at Mission, B.C.; on earth on the bank of the river at Comox, "Vancouver Island. (Macoun.)