(575.) P. brevicaule, Beauv.; Lesq. & James, Mosses of N. America, 260.

P. capillare, Canadian Musci, No. 377.

Pictou Co., N.S. (McKay.) On clayey soil, Bass River and Carle-ton, N.B. (Fowler's Cat.) On clay by the roadside, beyond the marsh, near Shaw's, Brackley Point, Prince Edward Island; also at Cassel-man, near Ottawa, Ont. (Macoun.)

(576.) P. capillare, Brid.; Lesq. & James, Mosses of N. America, 261.

Not uncommon in Greenland. (Fl. Gr.) Miquelon Island. (Dela-mare.) Chance Cove, Newfoundland. (Rev. A. Waghorne.)

(577.) P. dentatum, Brid.; Lesq. & James, Mosses of N. America, 261; Canadian Musci, No. 544.

P. urnigerum, Canadian Musci, No. 219, in part. Polytrichum urnigerum, Drumm. Musc. Bor. - Am., No. 284.

Banks amongst the Rocky Mountains. (Drummond.) North-west coast. (Nelson, Menzies.) Alaska. (Bischoff.) On the summit or Mount Queest, Gold Range, B.C., alt. 7,000 feet; St. Paul Island, Behring Sea, 1891. (J. M. Macoun.) Very abundant by the side of the railway in Roger's Pass and by Beaver Creek, Selkirk Mountains. (Macoun.) Polytrichum capillare, Michx., is probably a form of P. dentatum, Menzies, with the stem low and nearly simple.

(578.) P. contortum, Lesq.; Lesq. & James, Mosses of N. America, 262.

Alaska. (Kellogg.) North-west coast. (Menzies.) On the roots of upturned Douglas Fir in woods along the Columbia River, above Revelstoke, B. C. (Macoun.)

(579.) P. erythrodontium, Kindb. (n. sp.)

P. contortum, Canadian Musci, No. 430.

Stem erect, simple, or furnished with a short innovation above, naked below, 10-12 cm. long. Leaves green, spreading, flexuous and not incurved when dry, plane and patent when moist, linear-lanceolate, acuminate, red-denticulate all around, not sheathing, undulate, hispid or margined; cells round-hexagonal, chlorophyllose, also the marginal; lamellae distinct and not confluent, numerous, 20-30; costa narrow, percurrent. Capsule single, short, ovate-cylindrical, erect and papillose, wide-mouthed; teeth red-brown, narrowly hyaline-margined all around, narrowly Ungulate; pedicel about 4 cm. long. Dioecious.

This species is allied to P. contortum and P. atrovirens, but very distinct. Dr. C. Mueller considers these (three) as belonging to a peculiar subgenus (section) Catharinella.

By a roadside in wet woods near Comox, Vancouver Island, May 3rd, 1887. (Macoun). Prince of Wales Island, Alaska. 1891. (J. M. Macoun.) Stanley Park, Vancouver City, B.C. (Law.)

(580.) P, atrovirens, Mitt.; Lesq. & James, Mosses of N. America, 262.

Sitka. (Barclay.) Abundant by roadsides at Hastings, Burrard Inlet, B.C., April 6th, 1889. (Macoun.)

(581.; P. urnigerum, Beauv.; Lesq. & James, Mosses of N. America, 262; Canadian Musci, No. 219, in part.

On earth, New Harbor, Broad Cove, Chance Cove and Harbor Breton, Newfoundland. (Rev. A. Waghorne.) Dry turf on a ledge, Canaan Forks, Queen's Co., N.B. (J. Moser.) In woods at Truro, N.S.; very abundant by roadsides at Cape Rosier and other points, Gaspé Co., Que.; along Bear Creek, Roger's Pass, Selkirk Mountains, B.C. (Macoun.) Vicinity of Quebec. (St. Cyr.)

(582.) P. alpinum, Roehl.; Lesq. & James, Mosses of N. America, 263; Canadian Musci, No. 220.

Polytrichum alpinum, Drumm. Musc. Bor. - Am., No. 282.

Little Bay Islands, Western Cove, Cape Charles and Deep Water Bay, Labrador; on rocks, Harbor Breton and Trinity Bay, Newfoundland. (Rev. A. Waghorne.) Rocks of Lake Superior; and in various parts of Canada. (Drummond.) On the ground at Restigouche, N.B. (Fowler's Cat.) Wet rocks, Tobique River, N.B. (Hay.) Canaan Forks, Queen's Co., and Tay, York Co., N.B. (J. Moser.) Crevices of rocks Mount Albert, Gaspé Co., Que.; wet rocks, Sudbury Junction, Ont.; crevices of rocks, 10 miles south of Fort William, Lake Superior, also along Nepigon River; on perpendicular rocks, head of Lake Louise, Rocky Mountains; along Bear Creek in Roger's Pass, Selkirk Mountains; on rocks along the Columbia River at Revelstoke; also at Yale on the Fraser River, B.C.; on Mounts Benson and Arrow-smith, Vancouver Island. (Macoun.) Wet rocks, Queen Charlotte Islands. (Dawson.) Hall Island, St. Paul Island and Ounalaska, Behring Sea. 1891. (J. M. Macoun.) Kotzebue Sound and Sitka; (Roth. Alask.) Islands in Baffin's Bay. (R. Brown.) Frederikshaab, Greenland. (Fl. Gr.)

Var. septentrionale, Brid.; Canadian Musci, No. 427.

Polytrichum septentrionale, Drumm. Musc. Bor. - Am., No. 283.

Summit of Rocky Mountains. (Drummond.) Abundant on the summit of Copper Mountain, on the south side of the Bow River valley, at Castle Mountain, Rocky Mountains. (Macoun.) Greenland. (Fl. Gr.) St. Lawrence, St. Paul and St. George islands, Behring Sea. 1891. (J. M. Macoun.)

Var. brevifolium, Brid.

On rocks, Digge's Island, [Hudson Strait. (R. Bell.) Greenland. (Fl. Gr.)

Var. microdontium, Kindb., Ott. Nat. Vol. V.

Differs in the leaves being nearly entire or indistinctly denticulate. St. Paul Island, Behring Sea, 1891. (J. M. Macoun.)

(583.) P. Macounii, Kindb., Bull. Torr. Bot. Club,XVI. 96; Canadian Musci, No. 546.

Dioecious; laxly caespitose, green, brownish when old. Stem rooting only at base, ascending 8-15 cm. high, dichotomous branching. Leaves very long (1.5-2 cm.); when dry, spreading or patulose, flexuose and convolute; when humid, subplane, linear-lanceolate; cuspidate from the short, sheathing, dirty-white base, densely and sharply serrate, spinulose and reddish at back towards the apex; lamellae numerous (about 60), entire, each of round hexangular cells, costa long-excurrent; lower cells of the leaf-base elongate and narrow, the upper oblong, the cell-walls often oblique and irregular. Perichetial leaves shorter and more acute than the other; seta robust, 3-6 cm. long, pale, finally orange. Vaginule glabrate, pale; capsule 6 mm. long, obliquely inclined, cylindric-oblong without neck at the base, narrowed below the mouth, constricted, not angulose, finally dark-brown, at first greenish with the mouth orange, 6-7 mm. long and 2 mm. broad; lid large conic-subulate, at base orange, 2 cm. long; teeth of peristome 32, short.

This robust and very distinct species is allied to the Japonian Polytrichum grandifolium, Lindb.

On rocks and earth in Roger's Pass, Selkirk Mountains; on rocks at Revelstoke on the Columbia and on earth at Hastings, Burrard Inlet, B.C.; on the slopes of Mount Arrowsmith, Vancouver Island. (Macoun.) On rocks, Alert Bay, Vancouver Island. (Dawson.) Prince of Wales Island, Alaska, 1891. (J.M. Macoun.)

(584.) P. polare, C. Muell, Bot. Zeit. 205. 1859. Collected in Eastern Greenland and on Sabine Island. (Pansch.)

575. P. brevicaule, Beauv.

Polyirich m Pennsylvanicum, Hedw.; Kindb., Bryol. N. Am. &Eur. 158.

On earth at Half-Way Brook and Baddeck, Cape Breton Island, N.S., 1898; on a sandy bank north side of Beechwood Cemetery, Ottawa, Ont., Oct., 1900. (Macoun.)

576. P. capillare, Brid.

Polytrichum capillare, Richard; Kindb., Bryol. N. Am. & Eur. 159.

Salmon Creek, near Juneau. (Miss G. Cooley.) This is probably P. dentatum.

578. P. contortum, (Menzies) Lesq.

Catharinella cont.rta, Menzies; Kindb., Bryol. N. Am. & Eur. 157.

On earth, Nagai Island, Alaska, Sept. 18th,1892. (J.M.Macoun.) Loring, Sitka. (Miss G. Cooley.)

580. P. atrovirens, Mitt.

Catharinellai atrovirens, Mitt; Kindb., Bryol. N. Am. & Eur.

157.

On earth in Stanley Park, Vancouver City, B.C., 1893. (Macoun) Law.) Reported as P. eythrodontium, in Part VI., p. ) 50.

581. P. urnigerum, Beauv.

Polytichum u:nigeum, Linn.; Kindb., Bryol. N. Am. & Eur. 158.

On earth at Baddeck, Grand Narrows, and Louisburg, Cape Breton Island, N.S., 1898; abundant on roadside cuttings, Edmuns-ton, N.B., Sept., 1899. (Macoun.) Stillwater River, Labrador, 1896. (A. P. Low.) Port Etches, Alaska, Lat. 60°30' 1892. (J. M. Macoun) Juneau, alt. 3,000 feet; also at Salmon Creek and Gold Creek Canon, Juneau, Alaska. (Miss G. Cooley.)

582. p. alpinum, Roehl.

Polytrichum alpinum, L.; Kindb., Bryol. N. Am. & Eur., 160.

Not rare at Baddeck, Louisburg and Margaree, Cape Breton Island, N.S., 1898; crevices of rocks at Meech's Lake, Que., and Hogsback, near Ottawa, Ont., 1897. (Macoun) Port Etches, Alaska, Lat. 6o° 30', 1892. (J. M. Macoun.) Juneau, 3000 feet alt.; also at Salmon Creek and Sheep Creek, near Juneau, Alaska. (Miss G. Cooley.) Sheep Camp, Dyea Creek, Alaska; and Lindeman, Yukon. (Willams.)

Var. subcylindricum, Kindb.

Koksoak River, northern Labrador, Aug. 21st, 1896. (A. P. Low.)

583. P. Macounii, Kindb.

Polytrichum Macounii, Kindb., Bryol. N. Am. & Eur. 159.

On rocks at the mouth of the Skeena River, B.C., May, 1892; mountains at Chilliwack Lake, B.C. (J. M. Macoun.)