104 MESSRS. J. A, WHELDON AND W. С. TRAVIS ON 
‘ Lancashire Naturalist,’ vols. i. and ii., 1907-1908. The list of lichens 
appears in vol. И. pp. 357-360. As the Todmorden district lies partly in 
Yorkshire and partly in Lancashire, we are only able to include in our list 
those species for which definite Lancashire localities are given. Unfor- 
tunately, Stansfield’s list mentions only a few Lancashire stations, but it is 
interesting, nevertheless, to us as showing the general character of the 
lichen-flora in the Todmorden district half a century or more ago, and for 
the evidence it affords that the deterioration of the lichen-flora had then 
commenced. Stansfield also contributed an interesting chapter, entitled 
“ Observations on the Botany of the Forest of Rossendale,” to Newbigging’s 
* History of the Forest of Rossendale’ (1868). Eight species of lichens are 
there mentioned. In his introductory remarks Stansfield calls attention to 
the destruction of the flora by the influence of smoke, and to this cause he 
attributes the extinction of from 30 to 40 species of cryptogams “ which have 
disappeared from the flora of the Forest during the last twenty years.” 
The next contribution to our knowledge of South Lancashire lichens is 
contained in the ‘Victoria History of Lancashire’? (1906). The article 
“ Botany,” by H. Fisher (6), gives records (supplied by one of the present 
authors) of 29 species of lichens found in South Lancashire. 
During the past seven years the investigation of the lichen-flora has been 
continued by the authors, with assistance of a few friends, and tlie results are 
embodied in the present paper. А few notes and records, published during 
the course of the investigation, will be found in the Proc. Liverpool Botanical 
Society, the pages of the * Lancashire Naturalist,’ and in the * Reports of the 
Lichen Exchange Club.’ 
V. Systematic List. 
In nomenclature and arrangement the list mainly follows Horwood’s * Hand- 
List of the Lichens of Great Britain, Ireland, and the Channel Isles’ (8) 
which is based on the * Monograph of British Lichens,’ Parts 1 and 2. 
! indicates that a specimen has been seen by the authors. 
Names of localities where the plant in question does not now occur are 
enclosed in parenthesis; and [ ] are used when a species is apparently now 
3 
extinct in the vice-county. 
The authors are responsible for all records in the List for which no authority 
is given, 
The total number of species recorded for South Lancashire, and referred to 
in our List, appears to be 190. Of these 4 are due either to errors of identifi- 
cation or of locality, or the names are ambiguous. 12 of the recorded species 
are believed to be now extinct, and perhaps this number should be larger. 
With these deductions, the number of species in South Lancashire, of which 
there is fairly recent evidence, is 174, with 27 varieties, 
