100 Proceedings of the Royal Irish Academi/. 



Bartramia fontana (Liun.) — Wet, splashy places; common. 

 B. arcuata (Dicks.) — Damp rocks; common, but barren. 



Bete-s;, 



Bryum pseudotriquetrum (Hedw.) — On wet rocks in several places. 

 B. alpinum (Linn.) — Limestone rocks to the west of the church ; 



barren. 

 B. capillare (Linn.) — Common. 



Aulacomnion palustre (Schwaeg.) — Bogs in the north and west. 

 Milium hornum (Linn.) — Frequent on shady banks. 

 M. punctatum (Hedw.) — Wet rocks; rare. 



Htpne^. 



I have not availed myself of the recent subdivisions of the genus 

 Hypnum of Dillenius, to which so many able bryologists attach a 

 generic value. However desirable that, for convenience of reference, 

 the species should be grouped by minor characters, yet it seems to me 

 that these groups constitute sections only of a large but very natural 

 genus. The introduction of a burdensome trinomial system has also 

 been avoided. 



Homalothecum sericeum (Linn.) — Frequent on damp rocks. 

 Thamnium alopecurum (Linn.) — Bocky banks of streams. 

 Thuidium tamariscinum (Hedw.) — Damp mossy banks; not common. 

 Hypnum undulatum (Linn.) — Heathy places ; not common. 

 H. lutescens (Huds.) — Sparingly on the limestone rocks. 

 H. populeum (Hedw.) — On rocks ; frequent. 

 H. rutabulum (Linn.) — Common. 

 H. ruscifolium (Dill.) — On rocks in streams ; common. 

 H. tenellum (Dicks.) — Common on the limestone. 

 H. striatum (Schreb.) — Damp shady rocks ; rare. 

 H. praelongum (Dill.) — Shady banks; frequent. 

 H. speciosum (Brid.) — Damp rocks ; rare and barren. 

 H. serpens (Dill.) — Common. 



H. cuspidatum (Dill.) — Abundant in marshy ground. 

 H. purum (Linn.) — Mossy banks; not common. 

 H. schreberi (Willd.) — Common on the heaths; no fruit. 

 H. scorpioides (Linn.) — Boggy places in the north-west; quite luxu- 

 riant, but always barren. 

 H. sendtneri (Schimp.) — Boggy ground; rare and barren. 

 H. filicinum (Linn.) — Wet rocks; frequent. 

 H. moUuscum (Hedw.) — Limestone rocks ; frequent. 

 H. cupressiforme (Dill.) — Common. 

 H. resupinatum (Wils.) — Frequent. 

 H. squarrosum (Dill.) — Common. 



