DUBLIN UNIVERSITY 



Orthotrichum Lyellii {Hooker). Mr. LyelTs Bristle Moss. 



Habitat : on trees near Clonmel, and at Powerscourt. This in- 

 teresting addition to onr Flora was first discovered by me growing on 

 trees by the side of the River Suir, near Clonmel, bearing fruit in July, 

 1856, and since barren at Powerscourt. 



Br yum warneum (Blandow). "Warren Thread-Moss. 



Habitat : on muddy spots at the North Bull, near Dublin, 1857 ; 

 Mr. D. Orr. This species is described at page 12, "Bryologia Britan- 

 nica," among the addenda. At the time of the publication of that work 

 only two habitats appear to have been known for this moss in Britain ; 

 one in Fifeshire, Scotland, and the other in Lancashire ; the discovery 

 of it in Ireland is, therefore, the more interesting. 



Bryum inclinatum (Br. and Sck). Small-mouthed Thread-Moss. 



Habitat : this species came up in considerable quantities among 

 heath mould brought from the Dublin Mountains, in one of the conser- 

 vatories at the Botanic Garden in 1856, and has since been collected on 

 a wall at Howth, by Mr. D.Orr. Probably not rare. 



Bryum cemuum (Hedw.). Drooping Thread-Moss. 



Habitat : on the wall which surrounds the viceregal demesne, 

 Phoenix Park, 1856 ; Mr. D. Orr. And since, in other localities near 

 Dublin. 



Jlypnum salebrosum (Hoffman). Smooth-stalked Streaky Feather Moss. 



Habitat : on a grassy sand-bank by the side of the River Tolka, near 

 the Botanic Garden, Glasnevin, 1857 ; Mr. D. Orr. 



The following species have either been considered of rare occurrence 

 in Ireland, or have had no certain localities mentioned in " Bryologia 

 Britannica" : — 



Sphagnum rubellum ( Wihon). Red Dwarf Bog Moss. 



Habitat : near the base of Carntuel Mountain, Killarney, June, 1857, 

 growing with Jungermannia Woodsii and J. juniperina. 



