290 GEOLOGICAL SURVEY OF CANADA. 



1144. B. cavernosum, Kindb., Revue Bryol., 1895. 



Differs from B. rutabuliforme : Leaves more concave, recurved 

 on both sides to acumen ; alar and lower basal cells small, green 

 and well-defined. Lid of capsule longer fointed or 1 ostella'e. 



On rocks near high-water mark, Spanish Mills, and on moist 

 rocks, Credit Forks, Ont., 1892-93. ( Jos. White) 



1145. B. Hillebrandi, Lesq.; Lesq. & James, Mosses of N. 

 America, 340. 



On old logs in woods, Carleton Place, Ont., May 12th, 1900. 

 {Macoun?) 



1146. B. biventrosum, Muell.; Lesq. & James, Mosses of N. 

 America, 338. 



On old logs in woods, Carleton Place, Ont., May 12th 1900. 

 {Macoun.^ 



1147. B. calicareum, Kindb., Revue Bryol., 1895. 



Leaves crowded, long-acuminate, filiform-pointed, more or less 

 recurved, incurved-lalcate when dry, patent when moist; angular 

 cells short, special alar cells few, hyaline and much larger, the 

 others linear. Stem-leaves with a broad base; costa short, gener- 

 ally vanishing near the middle. Branch-leaves narrow ; costa 

 nearly reaching the acumen. Capsule small, arcuate; cilia not 

 appendiculate; lid apiculate; pedicel smooth about i cm. 

 long. Tufts dense, radiculose, green, faintly glossy. Stem irregu- 

 larl)^ divided; branches not compressed. Habit of B. intricatum. 



Abundant on flat limestone rocks in Rockcliffe Park, Ottawa, 

 Ont., Oct., 1892, May, 1899, and June, 1900. {Macoun.) 



1148. B. intricatum, Hedw.; Kindb., Bryol. N. Am.& Eur. 118. 



On damp rocks, Meech's Lake, Chelsea, Que., Sept. 23rd, 

 1893. New to America. {Macoun.) 



1149. B. SUbintricatum, Kindb., Revue Bryol., 1895. 



Leaves narrowly ovatc-oblong, or ovate-lanceolate nearly uni- 

 form (those of the branches not much narrower), nearly crowded 

 (at least those of the stem), decurrent, not falcate when dry; alar 

 cells few, the others linear; costa vanishing above the middle. 



