Stewart — The Botany of the I>iland of Rathlin. 99 



Glyphomitrium Daviesii (Dicks.) — Basaltic rocks ; rare. 

 Ptychomitrium polyphyllum (Dicks.) — Common. 

 Racomitrium lanuginosum (Hedw.) — Frequent on the heaths. 

 R. aciculare (Linn.) — On stones in streams ; common. 

 R. fasciculare (Schrad.) — Rocky heaths. 



Leucobeye^. 

 Leucobryum glaucum (Linn.) — Frequent on the heaths. 



Teichostomace^ . 



Phascum cuspidatum (Schreb.) — Rare, only found in one spot. 



Gymnostomum microstomum (Hedw.) — Not common. 



Pottia heimii (Dicks.) — Rocky sea-shore ; not common. 



P. truncatula (Linn.) — Fields ; not common. 



Weissia viridula (Brid.) — Common. 



"W. verticillata (Linn.) — On wet, vertical, limestone rocks, in small 

 quantity, and barren. 



Didymodon rubellus (B, & S.) — Waste ground ; frequent. 



Trichostomum mutabile (Bruch.) — Rocks in damp places ; rare. 



T. tophaceum (Brid.) — Wet rocks ; not common. 



T. littorale (Mitt.) — On rocks in several places ; not known elsewhere 

 in Ireland. 



T. crispulum (Bruch.), var. elatum ; (Schimp.) — Sparingly on rocks 

 at the west end. 



Tortula atrovirens (Sm.) — Very rare, one small tuft only observed. 



T. revoluta (Schwg.) — Wall at the demesne ; rare. 



T. muralis (Linn.) — Walls and rocks ; common. 



T. fallax (Hedw.) — Damp clay banks ; frequent. 



T. rigidula (Dicks.) — Damp rocks; not common. 



T. subulata (Linn.) — Dry banks; frequent. 



T. Isevipila (Brid.) — Frequent' on the limestone rocks. 



T. hibernica (Mitten,)? — This is a barren moss which, when collect- 

 ing, I took for a form of Didymodon cylindricus. It is not that 

 species ; and Mr. Holt, after a careful examination, and with some 

 hesitation, considers it *' a poor, drawn form of Tortula hibernica, 

 but decidedly abnormal." It is not rare on the basaltic rocks. 



OjaiHOXJilCHE^. 



Orthotrichum cupulatum (Hoif.) — Wet rocks ; the variety nudum of 



Dickson. 

 0. diaphauum (Schrad.) — Sparingly on stones west of the church. 

 0. pliyllanthum (Brid.) — On rocks in several places. 

 Zygoclon stirtoni (Schimp.) — Basaltic rocks ; rare. 



FuNlEIEiE. 



Entosthodon templetoni (Hook.) — Rocks by streams; rare. 



R. r A. PROC, SEK. II.. VOL. IV. — SCIENCE. P 



