I56 THE FLORA OF HALIFAX. 



Andreaea crassineryia, Bruch. 



1864. Hebden Valley ; G. E. Hunt, Brit. Moss Fl. Lees' Fl. 

 H. N. Dixon (Students' Handbook) is of opinion that the 

 differences between this and the preceding species are of 

 so slight a nature " that A. cvassinevvia must be considered 

 to be little more than a variety of A. Rothii, with an 

 extremely narrow lamina reduced to one or two series of 

 cells above, and occasionally disappearing entirely just 

 below the apex." He places it under A. Rothii as a sub- 

 species. 



TETRAPHID ACE M . 



Tetraphis pellucida, (L) Hedw. 



1840. High Greenwood, etc. (Heptonstall). — Bailies' Fl. 



On banks in woods, Todmorden. — Hevb. Nwl. 



Very common in all the moist woods, especially about 

 decaying tree-stumps which it often literally clothes. It 

 also flourishes abundantly on the stems of dead ferns, 

 drooping over the edges of moist woodland banks. So 

 far as our observations have gone in this district it is 

 invariably barren of capsules. Its method of vegetative 

 reproduction is so successful that it has no need to form 

 capsules and spores. There are some specimens in fine 

 fruit in Leyland's Herbarium, gathered in Stiperden 

 Clough just outside the parish, in 1836. It may occasion- 

 ally fruit still in some out-of-the-way corner of the district, 

 and have escaped detection. Instead of the ordinary moss 

 capsule and spores, it produces a cup filled with gemmae 

 at the apex of the stem. 



Tetraphis Browniana, (Dicks) Grev. 



1837. High Greenwood (Heptonstall) ; Hell Holes ; Keb 

 Clough ; Wickenberry Clough, etc. — Hevb. Leyl. 



1840. In many of the doughs in the neighbourhood of 

 Todmorden, Heptonstall, etc. — Bailies' Fl. 



Sandy rocks near Todmorden.— Herb. Nwl. 



1854. Shady sand-stone rocks in Staups Clough, and other 



rocky dells near Todmorden. — Supp. 

 1888. Keb and Staups Cloughs. — A. Stansfield, Lees' Fl. 

 On the under surface of overhanging rocks, Hebden Valley, 



a little above Hardcastle (1896). — /. Needham and H. T. 



Soppitt ! Lumb Waterfall, Crimsworth Dean. — J. 



Needham. 



