* B. mammilligerum, Kindb. (n. subsp.)

Monoecious. Tufts very dense and radiculose. Stem subpinnate. Leaves very patent in a dry state, striate, long, narrowly ovate-lanceolate, often filiform-pointed, borders not, or narrowly, recurved, faintly serrate; alar cells few; costa ordinarily vanishing in the middle, sometimes longer. Perichetial leaves long-aristate. Perigonial leaves subuliform-pointed. Capsule suboval, curved; segments narrowly rimose,not open; cilia nodose, not appendiculate; annulus none; lid mammillate; pedicel long, smooth.

On old wet logs near a spring along the road leading south from Sicamous, B.C., July 19th, 1889. (Macoun.)

Since the true Brachythecium salebrosum is an object of so many contrary descriptions by different authors, we have preferred to propose this form separately.

Schimper says, Syn. muscor. Europ. ed. 2, II, 641:-operculo conico, annulo angusto, processus in carina hiantes.

Lesq. & James, Mosses of 1ST. America, p. 336:-operculum conical, annulus narrow, cilia articulate.

C. Mueller, Syn. Muscor. Omn., II., 359:-folia caulinae laxe imbri-bricata, late ovata longe latiuscule acuminata, perichetialia longe reflexa acuminata; theca exannulata; operculo conico acuto, perist. d. int. valde hiantes, ciliis appendiculatis. From the last description the present one differs considerably.

(719.) B. glareosum, (Bruch), Bryol. Europ.; C. Muell., syn. 361.

Hypnum lutescens, Drumm. Musc. Bor. - Am., No. 174.

About the roots of trees. (Drummond.) On earth at the roots of trees in woods west of the Columbia River at Revelstoke, B.C. (Macoun.)

(720.) B. Roellii, Een. & Card. Near Victoria, Vancouver Island. (Dr. Roell.)

(721.) B. leevisetum, Kindb., Bull. Torr. Bot. Club, XVII., 279.

Habit of B. populeum. Plants caespitose, green and glossy. Stem irregularly ramulose. Leaves close, sub-erect, open, ovate-lanceolate, acuminate and acute, sulcate; borders serrulate from the middle upwards; basal cells dilatate; costa long, reaching at least two-thirds of the leaf. Capsule small, incurved, oblong; outer teeth hyaline-margined, light brown; cilia short and not appendiculate; perichetial leaves nerveless; lid highly convex, not apiculate; pedicel very smooth. Monoecious.

In small quantity on a rotten log in the valley of Eagle River at Craigellachie, Gold Range, B.C., July 18th, 1889. (Macoun.)

(722.) B. acutum, (Mitt.) Sulliv. Icon. Suppl. 99.

Hypnum (Brachythecium) acutum, Mitt.; Lesq. & James, Mosses of N. America, 337; Canadian Musci, No. 438.

Pack River, British Columbia. (Lyall.) Mansfield Island, Hudson Strait, 1885. (R. Bell.) On earth in wet woods, Beechwood, Ottawa, Ont.; and west of Hull, Que.; on logs at Hastings, and on earth at Quesnel, B.C. (Macoun.)

(723.) B. albicans, Bruch & Schimp., Bryol. Europ.

Hypnum (Brachytheclum) albicans, Neck.; Lesq. & James, Mosses of N.

America, 337; Canadian Musci, No. 285, in part; Drumm. Musc.

Bor. - Am., No. 173. Hypnum salebrosum, Drumm. Musc. Bor. - Am., No. 175, in part.

Rocky Mountains. (Bourgeau.) Heart's Delight, Newfoundland. (Rev. A. Waghorne.) Bass River, N.B. (Fowler's Cat.) On earth at Salt Lake, Anticosti; on earth in woods, Brackley Point, Prince Edward Island; on rotten logs in a swamp at Brighton, Ont.; on rotten logs at Owen Sound, Ont.; on rotten logs, Roger's Pass, Selkirk Mountains; on earth at Yale and Quesnel, B.C.; on sand at Comox Bar, Vancouver Island. (Macoun.) On dry barren ground amongst grass (No. 173); in marshy ground (No. 175). (Drummond.) St. Paul Island, Behring Sea. (Palmer.) Greenland. (Fl. Gr.)

(724.) B. harpidioides, C. M. & Kindb. (n. sp.)

Tufts compact, soft, radiculose below, whitish or bright green, not shining. Stems intricate, irregularly branching or pinnate. Leaves patent, somewhat loosely disposed, decurrent, more or less arcuate (principally the upper), not auricled, plicate, nearly flat, ovate and subulate-acuminate; borders faintly denticulate and recurved often all around; cells distinctly chlorophyllose, the alar large, subquadrate, the other lanceolate. Dioecious. Capsules not found.

This species resembles some forms of Brachythecium albicans, but is very peculiar in the arcuate leaves as in the section Harpidium of the genus Hypnum.

On old logs in woods along the Columbia River above Revelstoke, May 6th, 1890. (Macoun.) On logs in woods at Canaan Forks, Queen's Co., N.B., 1889. (J. Moser.)

(725.) B. cirrhosum, (Schwaegr) Schimp. Syn. ed. II., 866. Greenland. (Fl. Gr.)

(726.) B. trachypodium, (Brid.) Bryol. Europ. VI. Greenland. (Fl. Gr.)

(727.) B. pseudo-albicans, Kindb., Bull. Torr. Bot. Club, XVII.,

278.

Hypnum (Brachythecium) albicans, Neck. var. (?) or n. sp.; Canadian Musci, No. 285, in part.

Differs from the true B. albicans (Neck.), in having the leaves looser, sub-distichous, shorter-acuminate, faintly striate, denticulate all

WACOUN.] around; the alar cells greater, all the basal cells finally reddish. Barren.

On earth in woods at Comox, Vancouver Island, May 5th, 1887. (Macoun.)

(728.) B. platycladum, C. M. & Kindb. (n. sp.)

Hypnum (Brachythecium) Rutabulum, Canadian Musci, No. 287, in part.

Tufts densely cohering, bright-green, shining. Stem irregularly branching; branches short, obtuse, complanate. Leaves loosely imbricate or patent, nearly flat, long-decurrent, distinctly auriculate, faintly striate, broad, ovate, suddenly and generally short-acuminate; borders not recurved, faintly sinuolate or sub-entire below the middle, more distinctly denticulate above; cells pale, the upper narrow, the lower near the base dilated, the alar large and well-defined; costa short, reaching little above the middle. Capsule suboval, faintly curved; teeth dark-yellow, entire at the borders; cilia not appendiculate; lid unknown; pedicel rough, about 2 cm. long or shorter. Perichetial leaves long, filiform-acuminate, the point arcuate. Dioecious.