1897] Macoun — Cryptogamic Flora of Ottawa. 171 



146. B. platycladum, C. M. and Kindb. 



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 sub-oval, famtly curved ; teeth dark- 

 yellow, entire at the borders ; cilia not appendiculate ; lid unknown ; 

 pediel rough, about 2 cm. long, or shorter. Perichetial leaves long, 

 fiiliform-acuminate, the point arcuate. Dioecious. 



Differs irom B. rutabuium principally in the long-decurrent 

 auricled leaves and the dioecious inflorescerise ; from B. nvulare in 

 the peristome, etc. 



On stones in the bed and along the sides of a brook, north of the 

 Parry Sound Railway, west of West End Park, May 21st. 1885. 



Mr. F. A. Grout, of Columbia College, New York, who has just 

 completed a monograph of Brachythecium, refers the above species to 

 B. rutabuluTH (L.) \diX, flavescens, Brid. 



147. B. Donnellii, Aust. 



On limestone rocks in McKay's Woods, near the Lake, Sept. 25th, 

 1889. 



148. B. velutinum, Bruch and Schimp. 



On earth in Gilmour's Park, Chelsea, Que., Sept. 9th, 1889; on 

 the bases of trees in Dow's Swamp, May 2nd, 1896. 



149. B. intricatum, Hedw. (New to America.) 



On rocks by a brook near Meeche's Lake, north of Chelbea^ Que. 

 Sept. 23rd, 1893. 



150. B. Starkii, Bruch and Schimp. 



On stones in the brook north of the Parry Sound Railway and 

 west of West End Park ; on the bases of trees along the Beaver Mea- 

 dow west of Hull, Que., Oct. i6th. 1884. 



151. B. CEdipodium, (Mitt.) 



On old log's in woods Gilmour's Park, Chelsea, Que. Sept. 9th, 

 1889 ; on rocks in woods west of Hull, Que., Oct. 20th, 1891 ; on 

 earth in Beechwcod Cemetery, Oct. 12th, 1889. 



152. B. curtum, Lindb. 



On stones in damp places McKay's Woods, Oct. 12th, 188 



