192. A. laevis, Linn.
On wet banks, Canada. (Underwood.) Very abundant along the Bonnechère, below the hotel at Golden Lake, Ont., Sept. 26th, 1900; on an old road in woods, Arner, Essex Co., Ont., August 6th, 1901. (Macoun.)
193. A. punctatus, Linn.
Wet banks, Canada. (Austin.) On wet earth at Truro N.S., July, 10th, 1883. (Macoun.)
194. A. fusiformis, Aust.
On earth by the sides of ditches at Hastings, Burrard Inlet, B.C.; quite common by ditches and in wet places on mountains at Goldstream, Nanaimo and Victoria, Vancouver Island, (Macoun.) On earth, Alert Bay, Vancouver Island. (Dr. G. M. Dawson.) Observatory Inlet. (Scouler.)
195. A. stomatifer, Aust.
On earth on the slofe of the mountain at Sproat, Columbia River, B.C., June 24th, 1890; on earth in Stanley Park, Vancouver, B.C., Aug. 25th, 1893; on wet earth above Yale, Fraser River, B.C., May 17th, 1875. (Macoun.)
Thallus forming small dark green rosettes, 4-10 mm. in diameter, strongly undulate, crisped, subradiately inciso-laciniate or somewhat broadly lobed, rugose, pitted sometimes, slightly lamellate, ecostate, 6-8 cells in axile parts, cavernose, becoming at the margin gradually 3 or 2 stratose, now and then glandular-thickened; surface-cells distinct, translucent, lightly protuberant, subrhombic, trapegoidal, or oblong-pentagonal.
Abundant on earth subject to flood in spring, near the head of the discharge of Leamy's Lake, Hull, Que., October 6th, 1889. Not since collected. (Macoun.)