132 Guide to Belfast. 



Weisia tenuis, is confined to the sandstone, and grows at 

 Scrabo, Derriaghy, and Drumbo. 



The following are a few of the rare or noteworthy species, 

 with localities : 



Rarer Mosses. 



Tetraphis Browniana Grev. — Glens at Ballycastle. 



Polytrichum strictum Banks.— ^\\q.\q Martin and 

 Slieve Donard. 



Fissidens incurvus Starke. — White Mountain. 



F. pusillus Wils. — Rare. Black Mountain and Colin 

 Glen. 



Pleuridium alternifolium j'?^'^^^/^.— On sandy ground, 

 Warrenpoint and Lisburn. 



Ditrichum pusillum (Tiinm.) — Cranmore, near Bel- 

 fast. 



D. vaginans (Sull) Hajupe. — Summit of Colin Moun- 

 tain, Co. Antrim, the only British locality. 



Dicranella secunda Liudb. and D. crispa Schimp. — 

 Purdysburn. 



D. Schreberi Schimp. — Clayey ground near Lisburn. 



D. squarrosa Schimp. — Very fine and abundant in the 

 Mourne mountains; Glenariff: it fruits frequently. 



Campylopus setifolius Wils. — Slieve Donard. 



C. brevipilus B. and S. — Mourne mountains, and in 

 dry bare places on the top of Colin. 



Dicranum fuscescens Turn. — Rare, on rocks on 

 Slieve Bingian and Bencrom. 



D. Scottii Turfi. — In similar places to the last, Shan- 

 slieve and Slieve Commedagh. 



Ephemerum serratum Hampe. — Not common, on 

 sandh'Us at Newcastle and elsewhere. 



Ephemerum serratum var. angustifolium B and 

 S. — Very rare, on banks near Lisburn. 



Pottia asperula Mitt. — On banks by the sea at Mill- 

 isle. 



P. viridifolia Mitt, and P. crinita IVils. — On basalt 

 by the shore at Black Head. 



Tortula marginata Spr. — On sandstone at Derriaghy. 



T. pri neaps De Not. — Glenarm deerpark. 



