236 BUT AC EM. 



Very variable. The var. lanatus occurs on criiinbling basalt at Black- 

 head, and the var. majus on walls at Antrim, and damp rocky cliffs of 

 SaUagh Braes. 



9. B. blcolor Bichs. (B. atropuepureum W. 6f M.), 



"Waste ground, walls, and quarry debris — frequent. Fr. April— June. 

 Down — "Walls at Dundonald; T. Drummond, op. cit. Dundrum, 



Millisle, and quarry heaps at Ne'«i;o"WTiards ; S. A.S. Near 



Magheralin; C.H.W. 

 Antrim— Quarry waste at Kilcoreg, and walls at Lisburn, also on Cave 



HUl, several places about Belfast, and at Fairhead ; S.A.S. 



10. B. alplnnxn Hudson. 



Rocks, and heaths— frequent. Usually barren, but found in fruit, 

 by Moore, in June, 1836. 

 Down — Plentiful at various elevations on Slieve Donard ; S.A.S. Ros- 



trevor Mountain, and Tollymore Park ; C.H.W. 

 Antrim— Fairhead, and Carrickfergus commons (fruit); D.M. Summit 



of Divis, also on Agnew's Hill, Slemish, and Rathlin ; S.A.S. 

 Derry — Near Craignashoke ; Templeton. Slievegallion ; S.A.S. 



11. B. murale Wilson. 



Old walls, and limestone rocks— rare. Fr. May and June (Hobk.). 

 Down— Limestone rocks near Moira ; H.W.L., 1882. 



12. B. pallens Swartz. 



Wet rocky, or gravelly places— frequent. Fr. June and July. 

 Down— Deers' Meadow; H.W.L. Kirkcassock ; C.H.W. 

 Antrim — Banks of stream above Colin Glen ; J. R. Davies, Phytologist, 



1859. Colin Glen, Wolf hill, Woodbum, and bog at Duneane ; 



S.A.S. 

 Derry — White Mountain, also banks of stream on Meenard Mountain, 



and by Sluggada Burn near Dart Mountain ; S.A.S. 



13. B. ventrlcosum Dicks. (B. psexjdo-triquetrum JSedw.). 

 Wet rocks, and by mountain streams — rather rare. Fr. May and June. 



Down — Rocks on Slieve Donard, and near Dundrum, also on slate rocks 

 in Newtownards Glen; S.A.S. Annalong, and Moygannon 

 Glen ; H.W.L. Knockbarragh, and Tollymore Park ; C.H.W. 



Antrim— Bogs in Co. Antrim {Orr) ; Phytologist, 1857. 



1ft. B. caplllare Linn. 



Walls, rocks, banks, heaths, and waste ground — very common. Fr. 

 March — June. 



