(687.) H. dimorphum, Brid.; Lesq. & James, Mosses of N. America, 321.

Nova Scotia. (James.) On rocks, Canaan Forks, Queen's Co., and at Tay, York Co., N.B. (J. Moser.) Greenland. (Fl. Gr.)

(688.) H. heteropterum, Bruch.; Canadian Musci, No. 267.

Hypnum catenulatum, Drumm. Musc. Bor. - Am., No. 219.

On damp rocks at Hastings, Burrard Inlet, B.C.; damp rocks, Gold-stream and Nanaimo, Vancouver Island. (Macoun.) Forward Inlet,

Gulf of Georgia, B.C. (Dawson.) Greenland. (Fl.Gr.) Upon rocks, rare; not found in fructification. (Drummond.)

(689.) H. Vancouveriense, Kindb.

Thuidium Vancouveriense, Kindb., Bull. Torr. Bot. Club, XVII., 277.

Plants minute, densely and irregularly pinnate, sparingly radiculose, rarely flagelliferous, dark green, not glossy; branches short, very slender. Leaves ovate-deltoid, denticulate above the middle, pellucid, faintly papillose; stem-leaves decurrent, reflexed at the base, acute; branch-leaves smaller, looser, more concave, oval and obtuse; cells hexagonal-oval or rhombic, the alar and marginal quadrate-rhombic; costa slender, short, scarcely reaching to the middle; paraphyllia few or none. Perichetial leaves longer acuminate, cells narrower. Capsule small, oblong, sub-erect; peristome perfect; teeth yellowish; cilia 2; elongate; pedicel 1 cm. long. Dioecious.

On rocks on the upper slopes of Mount Finlayson, at Goldstream; also on Mount Arrowsmith, Vancouver Island, July 17th, 1887. (Macoun.)

(690.) H. procurrens, Lesq. & James, Mosses of N. America, 321; Canadian Musci, No. 498.

British North America. (Drummond fide Mitten.) On damp rocks, Roger's Pass, Selkirk Mountains, B.C., alt. 4,500 feet; on rocks near Hector, Rocky Mountains. (Macoun.)

(691.) H. frullaniopsis, C. M. & Kindb. (n. sp.)

Stem irregularly divided, brown-red, not radiculose; branches short, obtuse, when dry incurved; paraphyllia none. Leaves uniform, dark green, not shining, when dry loosely, or not at all, appressed, sub-squarrose when moist, distant and decurrent, cochleariform, roundish oval, obtusate, incurved at the apex, minutely denticulate above to the middle, very papillose; upper cells rhombic, the lower oblong, the alar quadrate, the inner basal reddish; costa short, more or less distinct sometimes stout and simple. Dioecious. Habit of the hepatic, Frullania

This species differs very much from the allied species principally in the uniform leaves, the absence of paraphyllia and the not cordate leaf-base.

On trees, at Canaan Forks, Queen's Co., N.B. (J. Moser.)

(692.) H, aberrans, Ren. & Card. Coult. Bot. Gaz.

H. homceopterum, C. M. & Kindb.; Canadian Musci, No. 484. Abundant on rocks and bark of trees around Revel stoke, also at

Pass Creek Falls, near Sproat, Columbia River, B.C., May 5th. 1890. (Macoun.)