THE FLORA OF HALIFAX. 203 



Hylocomium squarrosum, (L.) B. & S. (Hypnum, L.) 



1775. /. Bolton. [Lees' Fl. 



1888. Growing scarcer about Todmorden — A. Stansfield, 

 1893. Hardcastle ; 1898. Crimsworth Dean, both in fruit 

 — J. Needham. Ogden Clough ! 



Hylocomium triquetrum, (L.) B. & S. (Hypnum, L.) 

 1775. J. Bolton. 



1840. Woods, very frequent — Bailies' Fl. 

 1888. Todmorden — A. Stansfield, Lees' Fl. 

 This species has not been met with recently. 



HEPATIOE. 



INTRODUCTION. 



THE greater part of the introduction to the Moss- Flora 

 applies equally to the Hepaticae. Bolton's records form 

 the basis of the following list. He enumerated twenty-nine or 

 thirty species, two being included under the mosses. They 

 were mostly first records for the county, and nearly all have 

 been recently confirmed. So far as we know, the next pub- 

 lished records are contained in "A List of Musci and Hepaticae 

 of Yorkshire," by the late Dr. Spruce, in the " Phytologist,'* 

 Vol. ii. pp. 147-157, (1845). These were communicated to 

 Spruce by J. Nowell, from the Todmorden district. Unfor- 

 tunately this list was overlooked when the Moss- Flora was 

 compiled. Leyland's Herbarium contains thirty species also 

 supplied by Nowell, who continued to add to our knowledge 

 of the local and county distribution of these beautiful but 

 minute plants. Subsequent lists are to be found in the West 

 Riding Floras of Miall and Carrington, and of F. A. Lees. A 

 few are recorded in C. B. Hobkirk's History of Huddersfield, 

 1868, and in Pearson's List of Yorkshire Hepaticae, "Nat." 

 1876. The Messrs. T. & A. Stansfield, Todmorden, H. F. 

 Parsons, and others, contributed many records for the Calder 

 area to Lees' Flora 



