'45 



SPHAGNA OF YORKSHIRE AND DURHAM. 



WILLIAM INGHAM, B.A., 



Organising I>isf>ectoy of Schools, Haxby Road, York. 



In the 'Journal of Botany' for 1900 appeared the 'European 

 Sphagnacece' after Warnstorf by E. Charles Horrell, F.L.S. 

 For some time I have been studying- all my gatherings of 

 Sphagna according- to this new system, and the results are given 

 in this paper. My thanks are due to Mr. Horrell for his great 

 trouble and kindness in verifying- all the Sphagna in this list, 

 and also to Warnstorf himself for verifying- a few of them. 



The new system is a difficult one, but, as it deals with 

 morphological characters, I consider it a natural system, and 

 one that will give great pleasure, and that can be mastered by 

 any bryologist who will follow the directions given by Mr. 

 Horrell as to sections and staining at the beginning of his paper. 



The Sphagna I have g-athered, mentioned in this paper, have 

 the vice-county number in parentheses after the habitats, and 

 are as follows : — 



61 ... South-East Yorkshire. 



62 ... North-East Yorkshire. 



63 ... South-West Yorkshire. 



64 ... Mid-West Yorkshire. 



65 ... North-West Yorkshire. 



66 ... Durham. 



I.— SPHAGNA ACUTIFOLIA Schimp. 



Sphagnum fimbriatum Wils. Strensall Common (62), Sep- 

 tember 1898 ; Terrington Carr (62,), June 1898. 



Var. robustum Braithw. In abundant fruit, Skipwith Common, 

 July 1897 (61). 



Var. tenue Grav. Askham Bog- (64), June 1900. 



Sphagnum Russowii Warnst. var. rhodochroum Russ. A very 

 beautiful Sphag-num and, I believe, new to Britain, in bog- 

 approaching the White Force, Teesdale (65), August 1897. 



Sphagnum rube/lum Wils. 



Var. pallescens W T arnst. Leckby Carr (65), September 1898. 

 Var. purpurascens Warnst. Cronkley Fell (65), June 1897. 

 Var. rubrum Grav. Cronkley Fell (65), June 1897. 

 Var. versicolor Russ. Burnhope Moor, Weardale (bo), July 



1S98 ; Cronkley Fell (65), June [897 ; Farngill, Arkengarth- 



dale (65), August 1900. 



ujoi May 2. k 



