Lett — On the Mosses of the Mourne Mountain District. 277 
Pleuridium alternifolium, Rabenh. 
Growing, mixed with Fissidens incurvus, on a shaded clay bank, 
by the side of a stream flowing north-east from Clermont 
Mountain : H. W. L. Eank near Warrenpoint : E-ev. C. H. 
Waddell. Very rare. 
DITEICHUM. 
Ditrichum homomallum, Hampe. 
The Deer's Meadow, ToUymore Park, the Black Stairs on 
Slieve Donard, by the side of a stream flowing north-east 
from Clermont Mountain, Tullybranigan, the Off Mountain, 
by the Golden River on Carlingford Mountain, the "White 
Eiver Glen : H. W. L. Eosstrevor Mountain, Anglesey 
Mountain : Eev. C. H. Waddell. Frequent in the district. 
Ditrichum flexicaule, Hampe. 
In a quarry near Carlingford : Eev. C. H. Waddell. Very rare 
in the district. 
DICEAJS^ELLA. 
Dicranella heteromalla, Sch. 
Slieve Donard ; Slieve Commedah, at 1900 feet; Ben Crom ; 
Deer's Meadow ; Windy Gap, near the Eagle Mountain ; 
ToUymore Park ; Eocky Mountain, near Hilltown ; Knock- 
barragh Hill ; Castle Bog : H. W. L. Carlingford Moun- 
tain, Anglesey Mountain : Eev. C. H. Waddell. Abundant 
on summit of Slieve Donard, at 1800 feet. Slieve Croob : 
S. A. Stewart. Abundant and pretty common. 
Dicranella heteromalla, var. sericea, Sch. 
Warrenpoint, Black Eocks on Slievenamaddy, shady bank in 
Tollymore Park : H. W. L. Very rare ; new to Ireland. 
Dicranella heteromalla, var. stricta, Sch. 
Anglesey Mountain : Eev. C. H. Waddell. Very rare. 
Dicranella cerviculata, Sch. 
Slievenamaddy, Pigeon Eock Mountain, the Deer's Meadow : 
H. "W. L. Gruggandoo: Eev. C. H. Waddell. Near the 
summit of Slieve Croob : S. A. Stewart. This moss is not 
common in the district : it is, without exception, always 
found on the peaty sides of drains in bogs. 
