ACROCARPOUS MOSSES. 
Mnium Dil. L. 
I. M. marginatum (Dicks.) P. Beau v. 
[M. serratum Schrad.). 
Montane B. Range 1-3. 
Among- rocks and stony ground in woods, not uncommon. 
Frequent on shaded rocks amongst both ranges of hills 
from Cock Mill Woods near Whitby, to the main limestone 
cliffs of Widdale Fell (Baker). 
Raywood, Castle Howard (Spruce). 
Arncliff Wood, Eskdale (M.B.S.). 
Aysgarth Force (Barnes). 
Fruiting 4 mth. 
2. M. riparium Mitten. 
Montane B. Range i. 
On stumps by shaded streams and in woods, rare. 
Mowthorpe Dale Wood, Castle Howard (Spruce, 1844). 
Fruiting 5 mth. 
3. M. hornum (L.). 
Range 1-3. 
Damp shaded banks, and in woods, common. 
Everywhere frequent in shaded places, ascending from the 
central valley to the upper zone peaks (Baker). 
Fruiting 5-6 mths. 
4. M. silvaticum Lindb. 
{M. cuspidatum Hedw.). 
Montane B. Range 1-2. 
Wet shady places in woods, on rocks and tree roots. 
Wass Bank (Ibbotson, 1842). 
Deepdale and Rokeby Park, Teesdale. Kisdon Scars in 
June, 1905. 
