168 
BRYOLOGISTS AT AUSTWICK. 
CHRIS, A. CHEETHAM. 
OwInG to the early date of Easter the first meeting of the York- 
shire Naturalists’ Union this season was postponed, and the 
Bryological section took advantage of this and visited Austwick. 
The lessened railway facilities reduced the attendance 
somewhat. 
On the first evening specimens and diagrams of the Thuidia, 
which have been recently revised by Mr. H. N. Dixon, F.L.S., 
1. Thuidium tamariscinum. 2. T. Philiberti. 8. 7. delicatulum. 4. T. recognitum 
A. Apex of branch leaf. Bb. Apex of stem leaf. 
in The Journal of Botany this year (pp. 189-192) were ex- 
hibited and the differences pointed out. A working key based 
on that given by Mr. Dixon was used, but it must be here 
emphasised that the following remarks are based on the plants 
as seen in this district :— 
, J Branch leaf with pointed apical cell ie .. = T. tamariscinum. 
Vea, _ , truncate and pappilose apical cell— can © 
rill Stem leaf with filiform point of single cells oe =) Ll. Phulaberin 
Ya be nmielarovetie é e fs —— 8 
(Stem leaf with apparently ex-current nerve the 
7 cells in apex much elongate “ss .. = T. recognitum. 
” Stem leaf with nerve ceasing below apex which 
| is of short cells ty: of eve .. = IL. delicatulum. 
Naturalist, 
