82 MR. W. WEST : ECOLOGICAL NOTES. 
to 40 per cent. of Lecanora tartarea, 25 to 40 per cent. of Frullania Tama- 
risci, about 5 per cent. of 7sothecium myosuroides, and about 6 per cent. of 
Stereodon cupressiformis. Others not so much exposed showed about 20 per 
cent. of Lecanora tartarea, 30 per cent. of Parmelia saxatilis, and about 
10 per cent. of P. physodes ; the epiphytes were chiefly on the windward 
side. 
Four lots of Birches from Capel Curig. 
(The windward side was always richest.) 
Name of epiphyte. | 1. | 2. 3. | 4. 
Stereodon cupressiformis ......... bee | ... 5 | 4 
Dicranum scoparium ............ | 6 | 
| | 
Polytrichum formosum ............ | 4 
| Mostly on 
lower part. 
1 
| 
| Scapania gracilis .................. | 
Mostly below. | 
| | aN | _ 
| Lecanora tartarea у... ‚ 20 | 40 30 | 50 =35 per cent. 
| | | 
| Usnea ceratina .................... | 3 | 20 m | A little. |= 6 per cent. 
| A little 
| " . 
| | | Evernia 
| | Prunastri 
| Cladonia macilenta, C. рухі- | and Usnea. 
data, and С. digitata — ......... | | 5 5 ... = 3 per cent. 
| Mostly | 
| above. 
Platysma glaucum ............... | 25 40 =16 per cent. 
Parmelia physodes .............. e | e 2 
Parmelia saxatilis ............... m | wee m 3 | 
Creeping 
| over the 
| Scapania. 
Parmelia levigata ............... 3 2 2 
Pertusaria faginea п... 2 ... 3 | 
Spherophoron coralloides ......... | 10 | 
Sub-bareness  ..................... The rest. | The rest. The rest. | The rest. 
The branches bore Platysma glaucum (30), Usnea ceratina (25), Stereodon 
cupressiformis (5), Parmelia saxatilis (10), Lecanora tartarea (2). 
Climbing up some of these Birches to а height of about 30 centimetres 
was Dicranum scoparium mixed with Hylocomium loreum, Polytrichum for- 
mosum, and Cladonia sylvatica, a mixture similar to the vegetation of the 
ground. On various other trees (chiefly Oaks and Birches) at some distance 
from the last, the chief feature again was the abundance of Lecanora 
tartarea with fine apothecia where it faced the winds from the mountains ; 
