(626.) A. curtipendula, Brid.; Lesq. & James, Mosses of N. America, 291.

Lake Superior. (Agassiz.) Miquelon Island. (Delàmare). Placentia Bay, Newfoundland. (Rev. A. Waghorne.) Greenland. (Fl. Gr.)

Var. gigantea, Sulliv.& Lesq.; Canadian Musci, No. 245.

Vancouver Island. (Wood.) British Columbia. (Lyall.) On trees at Revelstoke, Columbia River Valley; on rocks at Yale and on trees at Hastings, Burrard Inlet, B.C.; very common on trees at Victoria, Nanaimo and Comox, Vancouver Island. (Macoun.) Harpledown Island, Gulf of Georgia and on trees at Alert Bay, Vancouver Island. (Dawson.) Sitka. (Roth. Alask.) Ounalaska, Behring Sea and Kodiak Island, Alaska. 1891. (J. M. Macoun.)

(621.) A. tenella, Kindb., Bull. Torr. Bot. Club. XVII. 275.

Tufts loose, green; secondary stems irregularly divided; branchlets numerous, the greater number very short. Leaves small, sub-patent or loosely appressed when dry, ovate-acute or short-acuminate, dentate at the apex, not striate, reflexed to the apex; the greater number of cells short, the inner and middle narrow; costa with 1-2 accessorial branches at the base, disappearing below the apex; perigonial leaves elongate. Dioecious. Female plants unknown.

Amongst Racomitrium varium (Can. Musc. No. 100) on rocks on the left bank of the Nanaimo River below the railway bridge, Vancouver Island, April 26th, 1887. (Macoun.)

(628.) A. Californica, Sulliv.; Lesq. & James, Mosses of N. America, 291 . Canadian Musci, No. 246.

On rocks at Deer Park, Lower Arrow Lake, Columbia River; on rocks at Yale; on trees at the mouth of Harrison River and rocks at Agassiz, Fraser Valley, B.C.; on trees near Victoria and at Comox, Vancouver Island. (Macoun.) Alaska. (Roth. Alask.)