WACOUN.] CATALOGUE OF CANADIAN PLANTS. 195 



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 (Brachythedum) Rutabulum, Canadian Musci, No. 287; in part. 



Tufts densely cohering, bright-green, shining. Stem irregularly 

 branching ; branches short, obtuse, complanate. Leaves loosely imbri- 

 cate 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 dis- 

 tinctly 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. 



Differs from B. Rutabulum principally in the long-decurrent auricled 

 leaves and the dioecious inflorescence ; from B. rivulare in the peris- 

 tome, &c. 



On stones by brooks in woods west of Ottawa, Ont., May 21st, 



1885. (Macoun.} 



(729.) B. gemmascens, C. M. & Kindb, (n. sp.) 



Tufts very dense, green, finally rufescent. Stem irregularly branching, 

 furnished with numerous male buds. Leaves narrow, ovate-lanceolate 

 with a twisted point, faintly denticulate all around, crowded, not 

 decurrent nor auricled ; cells pale, nearly all narrow, only the lowest 

 1-2 rows of the basal dilated, the alar not larger than the inner ; costa 

 prolonged above the middle, vanishing below the acumen. Capsule 

 small, round-oval, oblique ; teeth dark-orange, segments shorter than 

 the very high basal membrane, cilia not appendiculate ; lid conic, 

 short-pointed ; pedicel minutely verrucose, about 1 cm. long. Monoe- 

 cious. This species seems to be allied to B. Starkii, but well-distinct. 



On wet logs along the Columbia Eiver, above Eevelstoke, B.C., May 

 12th, 1890. (Macoun.} 



(730.) B. Donnellii, Aust. Coult. Bot. Gaz. IV., 162. 



Hypnum (Brachythedum) Donnellii, Aust. ; Lesq. & James, Mi 

 America, 338. 



On rocks in McKay's woods, near Ottawa, Ont. (MacounJ) 



