144 THE FLORA OF HALIFAX. 



Certainly gone long ago from Mile Cross, in Gibbet Lane ; 

 and no longer common or frequent on any of the moors. 

 Probably all the club-mosses have become much rarer 

 within the last century, or even half-century ; but with 

 so much moorland within the parish it is improbable 

 that they have become extinct. Lack of records is in 

 part due to difficulty of free access to the moors, and 

 consequent comparative neglect of their more scattered 

 plants. But it also seems likely that the practice of 

 firing the moors, in the interests of grouse, has brought 

 about the more or less complete disappearance of the 

 club-mosses, and some other moorland plants. 



SELAGINELLACEJE. 



Selaginella selaginoides, Gray. — 58. 



Native. Highland type. P. July. 



Very rare, on boggy moors: no record before 1895, when 

 Mr. C. E. Moss and Mr. C. Fielding found it on the way 

 to Blackstone Edge, about a mile before the White House. 



