(563.) A. undulatum, Beauv.; Lesq. & James, Mosses of N. America, 256; Canadian Musci, No. 214.

On banks, at the "Height of Land," Rocky Mountains; but rare. (Drummond.) New Harbor. Bay Bull Arm, Chance Cove and Broad Cove, Newfoundland. (Rev. A. Waghorne.) Miquelon Island. (Delà-mare.) Pictou Co., N.S. (McKay.) At Canaan Forks, Queen's Co., and Tay, York Co., N.B. (J. Moser.) On the ground in Kent Co. N.B. (Fowler's Cat.) On earth at Rustico Bay, Prince Edward Island; common on banks in woods at Ottawa, Lake Nipissing, Belleville and Owen Sound, Ont.; wet earth and turned-up stumps at Hastings and Yale, B.C.; common at Comox and Victoria, Vancouver Island. (Macoun.) Very common on knolls near London, Ont. (J. Dearness.)

(564.) A. angustatum, Bruch & Schimp.; Lesq. & James, Mosses of N. America, 256; Canadian Musci, No. 215.

Polytrichum angustatum, Drumm. Musc. Bor. - Am., No. 285.

New Harbor, Broad Cove and Bay Bull Arm, Newfoundland. (Rev A. Waghorne.) On the ground at Bass River, N.B. (Fowler's Cat.) Canaan Forks, Queen's Co., N.B. (J. Moser.) In dry sandy woods at Belleville, Ont.; also in Seymour West, Northumberland Co., Ont.; in woods at Leamington, Ont.; in woods, McLeod's Lake, lat. 55°, B.C. (Macoun.) Banks, etc, in Canada. (Drummond.) Vicinity of London, Ont. (J. Dearness.)

(565.) A. Selwyni, Aust.; Lesq. & James, Mosses of N. America, 256; Canadian Musci, No. 216.

Crevices of rocks, House Mountain, near Lesser Slave Lake, September 18th, 1872; on damp earth in Roger's Pass, and along Beaver Creek, Selkirk Mountains; along the Columbia River at Revelstoke, B.C. (Macoun.)

(566.) A. Lescurii, James; Lesq. & James, Mosses of N. America, 257.

Alaska. (Kellogg.) Sitka Island, Alaska. 1891. (J. M. Macoun.) This species occurs also in Japan, but in the specimens collected there by Mr. Bisset (in herb. Kindberg) the stem is at least a third shorter.

(567.) A. crispurn, James; Lesq. & James, Mosses of N. America,

257 ; Canadian Musci, No. 540.

A. xanthopelma, Canadian Musci, No. 463.

On earth in woods near Wooler, Northumberland Co., Ont.; also in woods at Port Dover and Leamington, Ont.; on earth along the Columbia River, about a mile above Revelstoke, B.C.; abundant on a loamy bank at Craigellachie, Eagle Pass, B.C. (Macoun.)

(568.) A, parallelum, Mitt.; Lesq. & James, Mosses of N. America,

258 ; Canadian Musci, No. 426.

Polylrichum undulatum, Drumm. Musc. Bor. - Am., No. 286.

Grand Cote, Rocky Mountains. (Drummond.) Wet rocks in Roger's Pass and on the higher slopes of Mount Cheops, Selkirk Mountains; also on the Gold Range north of Griffin Lake, B.C.; alt. 6,500 feet. (Macoun.)

(569.) A. leiophyllum, Kindb., Bull. Torr. Bot. Club XVII, 275; Canadian Musci, No. 217.

Plants erect, simple, naked below, densely foliate above, about 5-7 cm. high. Leaves smooth, lower very small, upper lanceolate and acute-cuspidate, not margined, the base scarcely broader; borders sharply serrate with large teeth, the basal only, entire; basilar cells narrow, the other round-hexagonal, all pellucid; costa percurrent; lamellae 6, disappearing below the apex, entire or slightly crenulate. Capsule single, 0.5-0.6 cm. long, sub-cylindrical, thicker below, 0.2 cm. broad, slightly curved, constricted at the mouth; lid obliquely rostrate from the conic base; perichetial leaves long-cuspidate with an excurrent costa; pedicel bright red, 4-5 cm. long. Dioecious.

This fine species differs considerably from A. parallelum in the smooth leaves, etc.

In damp woods on the lower slopes of Mount Arrowsmith, "Vancouver Island, July 18th, 1887; on earth in Roger's Pass, Selkirk Mountains, B.C., August, 1890. (Macoun.)

(570.) A. rosulatum, C. M. & Kindb. (n. sp.)

Dioecious. Stem indistinct or very short. Leaves rosulate, undulate, not margined, dentate at the middle, sometimes beset with transverse rows of small scales, the lower sub-oblong, the upper short-lanceolate, subobtuse; costa scarcely percurrent, nearly smooth. Barren.

This species is not to be confounded with our other species, though the scales of the leases are not always to be found. All other species, except A. leiophyllum and A. parallelum, have margined leaves.

On the bank of the Columbia River, between the railway bridge and the whirlpool, west side of River at Revelstoke, B.C., May 6th, 1890. (Macoun.)