190 The Ottawa Naturalist. [Jan. 



and well-defined; other cells narrow, very small; costa thin, 

 mostly indistinct, sometimes ceasing below or near the iniddle. 



Dioecious. Stem irregularly divided, not creeping; para- 

 phyllia none. Capsules unknown. 



Differs from the resembling H. KneiEii in small leaf-cells 

 and indistinct or short and faint costa. Now approved by Mr. 

 Renauld. 



Alaska, St. Paul's Island. J. M. Macoun, 1892, No. 113; 

 Ottawa, 28th September, 1907, No. 268. New to Canada. 



92. Orthotrichum affine, Schrad., subsp. subrivale. 



Capsule and pedicel exserted. Leaves short-acuminate 

 acute (not subulate). 



Quebec, 1905, No. 69. 



93. Bartramia circinnulata, C. M. et Kindb. 



Capsule long-pedicellate, as in B. pomiformis . 

 Vancouver Island, 1908. 



94. BrYUM HYDROPHILUM, KiNDB. 



Leaves of fruiting stem narrowly recur^-ed in the lower 

 part. Cilia of the endostome appendiculate. Spores small, 

 about 0. 01 m.m. Dioecious. Allied to B. ventricosum. 



Vancouver Island, fruiting, 1908. 



95. EURHYNCHIUM RUSCIFORME (WeIS) MiLDE, VAR. OBTUSUM. 



Leaves generally obtuse, often arrounded at the apex. 

 Capsules not seen. 



Vancouver Island, 1908. 



96. Calliergon trifarium (Web. et Mohr), subsp. 



apiculatum. 



Stem much divided; branches curved; leaves short-api- 

 culate, not arrounded at apex, less strongly appressed. Capsules 

 unknown. 



Vancouver Island 1908. 



97. Isothecium myuroides, Kindb. 



("Isothecium aplocladum, Mitt.:" Kindb., Eur. and N. 

 Amer. Bryineo). 



Leaves shorter than in /. tnyosur aides; cells often oblong. 

 It is several times found, also 1908, in Vancouver Island. 



98. Weisia Wolfii, Lesq. et James. 



("W. mucronata Br. eur. :" C. Mueller). 



