On earth and logs in woods. Bass River, Kent Co., N.B. (Prof. Fowler.) The dark colored form at Canaan Forks, N.B. (J. Moser.) A dark colored form (nigrescens, Kindb.) at Rustico Bay, P.E.I.; Pirate's Cove, Straits of Canso, N.S.; McKay's woods, Ottawa; abundant near Wooler, and at Belleville, Ont.; west of Edmonton, and along Buffalo Lake north of Isle a la Crosse, N.W.T., 1875; in woods at Revelstoke, B.C., 1890. (Macoun.) Roots of trees Island Lake, Argenteuil Co., Que. (D' Urban.) Bottom of canon below Elk River Bridge, Rocky Mountains. (Dr. Dawson.)

Var. pallidum, C. Muell. Miquelon Island, (Delaware.)

(100.) D. congestiforme, C. M. &Kindb. (n. sp.)

Differs from D. congestum, Brid., in the leaves being less twisted, the upper cells oblong, the costa narrow, the perichetial leaves long-acuminate, the capsule without annulus. Habit of D. scofarium, Hedw., but differing principally in the smooth costa, less denticulate leaves and the furrowed capsule. D. rhabdocarpum has all leaf-cells narrow.

On damp rocks on the east side of Lake Mara at Sicamous, B.C., July 3rd, 1889. (Macoun.)

(101.) D. congestum, Brid.; Musc. Recent. Suppl. I., 176; Canadian Musci, No. 408.

D. fuscescens, Lesq. & James, Mosses of N. America, 72, in part.

Differs from D. fuscescens, Turn, in the leaves being remotely serrate only above, the upper cells greater, nearly smooth and irregular, the lower porose, the costa narrower, 1/7 width of the base, and the capsule quite smooth. (Kindberg.) Bogs, Mount Albert, Gaspé, 1882. On old logs in woods at Morley, Rocky Mountains, 1885; at Donald in the Columbia Valley, 1889. (Macoun.) Sitka. (Roth. Alask.) Christianshaab, Greenland. (Fl. Gr.)

(102.) D. fuscescens, Turn.; Lesq. & James, Mosses of North America, 72, in part; Canadian Musci, No. 39.

Quite common on old logs across the continent. Tay, York Co. and Canaan Forks, Queen's Co., N. B. (J. Moser) Miquelon Island. (Delaware.) On logs, Tobique River, N.B. (Say.) On old logs, Bass River, Kent Co., N.B. (Fowler's Cat.) On logs, Jupiter River and Becscie River, Anticosti; in woods, Rustico Bay, P.E.I,; Pirate's Cove, Straits of Canso, N.S.; Fox River, Gaspé Co., Que.; on logs, at Ottawa, Belleville, Brighton, North Bay, Lake Nipissing, and Gull River, Peterboro Co., Ont.; on rocks, Lake Superior; old logs, Manitoba House, Lake Manitoba; on earth, Kicking Horse Lake, Rocky Mountains; on rocks at Sicamous, B.C.; Cameron Lake, Vancouver Island. (Macoun.) On old logs, Newfoundland. (Rev. A. Waghome.) Along the Athabasca River, N.W.T. (J. M. Macoun.) Greenland. (Fl. Gr.)

Var. brevirostre, Kindb.

Belleville, Ont.; and Macleod's Lake, B.C. (Macoun.)

(103.) D. Muehlenbeckii, Bruch & Schimp.; Lesq. & James, Mosses of N. America, 72; Canadian Musci, No. 481.

On Laurentian rocks at Shannonville, near Belleville, Ont., 1865; on earth at Morley, and on rocks at Hector, Rocky Mountains; on logs, Roger's Pass, Selkirk Mountains, 1885; on earth at Cache Creek, and Blackwater River, B.C., 1875. (Macoun.) On the slofes of Mount Queest, Gold Range, B.C., alt., 5,000 feet, 1889. (J. M. Macoun.) On old logs, Craigellachie, 1889; woods between St. John and Dunvegan, Peace River, 1872. (Macoun.) Smith's Sound. (Dr. Kane.)

(104.) D. brevifolium, Lindb. Musci Scand., 24; Greenland Flora 392.

Godhavn, Greenland. (Fl. Gr.) Digges Island, Hudson Bay. (R. Bell.)

(105.) D. Canadense, Kindb., Bull. Torr. Bot. Club, Vol. XVII, 87

Size robust. Habit of D. majus, Turn., or D. Drummondii. Stem radiculose. Leaves indistinctly undulate, long-acuminate, denticulate at the acumen; inner basal cells hyaline, the alar orange, the other cells sublinear and porose; costa smooth or slightly rough, not excurrent, broad at the base, narrow above. Capsule short, beaked, curved, finally costate and blackish.

Nearly allied to D. subpalustre, C.M. & Kindb., but the leaves are more gradually narrowed, also the perichetial ones, and very much longer; costa broader at the base.

On earth in woods at Moodyville, Burrard Inlet, B.C., April 19th, 1889. (Macoun.)

(106.) D. leucobasis, C. M. & Kindb. (n. sp.)

Dioecious. Stem very tomentose, 3-4 cm. high. Leaves green, cris-pate or falcate, faintly sinuose-undulate, narrowly ovate-lanceolate, gradually tapering into a subuliform denticulate, often brittle, point; alar cells fugitive, rectangular, small and yellow, the other lower cells porose, elongate and hyaline, the upper short and chlorophyllose; costa scarcely excurre nt, nearly smooth, narrow. Capsule curved, small and not furrowed; pedicel 1 cm. long.

This species is principally remarkable in the whitish leaf-base, but in habit resembling D. congestum, Brid.

On bases of trees in woods west of the Columbia River at Revel-stoke, B.C., May 6th, 1890; and in Roger's Pass, Selkirk Mountains. (Macoun.)

(107.) D. elongatum, Schwaegr; Lesq. & James, Mosses of N. America, VI; Drumm. Musc. Bor. - Am., No. 91.

Mountain woods. (Drummond.) Miquelon Island. (Delamare.) In bogs, New Harbor, Newfoundland. (Rev. A. Waghorne.) Northern shores of Lake Superior, 1848. (Agassiz.) Mansfield Island, Hudson Strait. (R. Bell.) Mount Albert, Gaspé Co., Que.; borders of Lesser Slave Lake and near Peace River, 1872. (Macoun.) Kotzebue Sound. (Roth. Alask.) Smith's Sound. (Dr. Kane.) Greenland. (Fl. Gr.)

(108.) D. plano-alare, C. M. & Kindb. (n. sp.)

Differs from D. Labradoricum, C. Muell. (D. Groznlandicum, Brid., Limpricht, D. tenuinerve, Zett.) in the leaf-cells being greater, short, rectangular and nearly uniform, the alar scarcely greater and not excavate; leaves green, a little larger with a quite blunt acumen; the stems cohering and shorter.

In D. Labradoricum the cells are very narrow, the alar well-defined and the leaves less blunt. The allied D. elongatum has an excurrent costa and the upper leaf-cells shorter than the lower.