(50.) W. viridula, Brid.; Lesq. & James, Mosses of N. America, 55; Canadian Musci No. 515.

W. controversa, Drumra. Musc. Bor. - Am. No. 67.

Tay, York Co., and Canaan Forks, Queen's Co., N.B. (J. Moser.) On the ground in the plains of Carleton House, Saskatchewan, N.W.T. (Drummond.) On earth along the high bank, south of the railway crossing in Belleville, Ont., 1864; on earth in woods at Leamy's Lake, near Hull, Que., 1889; on earth at Victoria, Vancouver Island. (Macoun.) On earth at London, Ont. (J. Dearness.)

(51.) W - convoluta, C. M. & Kindb. (n. sp.)

Tufts dense, dark green. Stem slender, branching, densely foliate. Leaves very patent when moist, flexuous, from a broader oblong base narrowed into the very narrow and long often piliform acumen, margins entire and erect; cells email, quadrate chlorophyllose opaque costa very thin, vanishing in the acumen. Perichetial leaves broader vaginant at the base, shorter than the other, densely appressed involving the pedicel; capsule cylindric, very narrow, faintly curved; lid obliquely rostrate; pedicel yellowish, elongate, slender, spirally twisted, narrowed to the capsule.

This species differs from Weisia viridula principally in the longer, narrower capsule, the leaves not involute and in the not excurrent costa.

Crevices of rocks near the summit of Copper Mountain south of Bow River, at Silver City, Rocky Mountains. Alt. 7,700 feet. 1885.