On rocks, Credit Forks, Ont. (James White. Thos. Walker.) On earth in a ravine at Grand Narrows, Cape Breton Island, N.S., 1898. (Macoun.)
44. G. rupestris, Schleich.
On ledges and boulders at the old mill, Rockliffe, Ottawa, Ont., 1896. (Macoun.)
45. G. curvirostris, Ehrh.
On dripping rocks, Credit Forks, Ont. (Jas. White Thos. Walker) On wet ledges of rocks, Rockcliffe, Ottawa, and at King's Mountain, Chelsea, Que., 1897; on rocks at Saddle Mountain, Banff, Alta.; in the Crow's Nest Pass, and on Moose Mountain, Alta., Rocky Mountains, 1897. (Macoun.) Yukon River cliffs, just below Dawson, Yukon, 1899. (Williams.)
Var. commutatum, Card. & Ther. (Bot. Gaz. Vol. p.)
This variety has long narrow leaves and the cells of the areola-tion are everywhere long and smooth. In the type, the upper areolation is composed of irregular cells, rectangular,quadrate and triangular, with scattered papillae.
47. G. tenue, Schrad.
On damp limestone rocks at Credit Forks, Ont., 1893. (James White.) Drummond's specimen No. 21 from Lake Winnipeg belongs here, but the reference from Owen Sound in Pt. VI. belongs to the next.
Leaves obtusate, subacute, not arrounded at the apex. Peri-chetial not larger and not sheathing, the inner one subovate and shorter. Capsule oblong, not longer than the beak; teeth none or rudimentary. Annulus not revoluble. Resembles Weisiatemris in size.
On limestone rocks at Owen Sound, Ont, July 31st, 1871; on earth in a ravine at Grand Narrows, Cape Breton Island, N.S., 1898. (Macoun.)