Note on Pellia epiphylla. 
347 
LITERATURE. 
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NOTE ON PELLIA EPIPHYLLA , 
By T. E. Wallis, B.Sc, (Lond.), F.I.C., 
(Lecturer in Botany at the Technical Institute, 
Tunbridge Wells). 
[With Six Text Figures]. 
I T is a pleasure to find in Dr. Cavers’ new “ Practical Botany ” 
(Clive, 1911) a more adequate treatment of the life history 
and structure of Pellia epiphylla than has hitherto been available ; 
one may instance in particular the description of the dehiscence 
lines in the capsule wall and the figures showing their microscopical 
structure (pp. 324 and 326). 
Having noticed the meagreness of the accounts usually given, 
1 kept plants of Pellia under observation in the laboratory 
from September, 1910 to July, 1911. As a result I discovered 
the lines of dehiscence in the capsule wall, and was somewhat sur¬ 
prised to find no mention of them in the ordinary text-books. On 
looking up the literature relating to the subject, I had found that 
although the mechanism of dehiscence is discussed in a paper 
