86 COMTOBITJE. 



at Sallagh Braes, and Eetreat Castle in Glenballyeamon ; 

 T.H.C. 

 Deny — Magilligan ; Bach. Brit. Hier. Sparingly on Benevenagh ; D.M. 

 Basaltic rocks of Benbradagh, Miillaglimore, and Slievegal- 

 lion; S.A.S. 



Var. /3 H, decipiens Sijme. 

 Antrim — Abundant on the cliffs of the Cave Hill between the caves and 

 MacArt's fort ; S.A.S. Probably elsewhere in the district. 

 Var. y H. AcrTiFOLiUM Bwk. 

 Basaltic cliffs of Sallagh Braes at about 400 feet ; S.A.S. 



3. H. Irlcum Fries. 



Basaltic rocks— rare. Fl. July and Aug. Ranges from 100 feet in 

 Eathlin to 1100 in Derry. 



Antrim — Garron Head ; Bab. Manual. Glenariffe ; Cyb. Hib. Cave Hill, 

 a few plants only, on cliffs south of the caves, and frequent 

 on rocks at the southeast of Bathlin Island ; S.A.S. 

 Deny — Sparingly on the basaltic cliffs of Benevenagh ; S.A.S. 



4. H. pallidum Fries. 



Basaltic rocks, at 1000 to 1200 feet, on Limestone in Rathlin at 150 



feet — very rare. Fl. July and Aug. 



Antrim — Steep rocks south of the caves of the Cave Hill, 1877, and 

 sparingly on limestone cliffs at southwest of Rathlin ; S.A.S. 



Derrj^ — Basalt rocks of Mullaghmore, 1885, and steep cliffs of Bene- 

 venagh; S.A.S. 



5. B. dnerascens Jord. (H. lasiophyllum Bab.). 



Ledges of rock at 200 to 1400 feet, and on coast sandhills in one in- 

 stance— verj- rare. Fl. mid. June tni end of Jvdy. 

 Down — Spalga Mountain northeast of Rostrevor ; S.A.S., 1872. One 



considerable patch of plants on the sandhills of Ballykinler ; 



R.Ll.P., 1886. 

 Antrim— Steep cliffs south of Glenarm ; Flor. JJlst. Glenariffe; Cyb. 



Hib. a.nd subsequentlv ; T.H.C. Cave Hill, SaUagh Braes, 



and BaUycastle ; S.A.S. 

 Derry— Benbradagh ; S.A.S., 1869. 



First found in Ireland by Dr. David Moore. 



6. H. argenteum Fries. 



Rocky banks of stream — extremely rare. Fl. July and Aug. (Bab. 

 Man.). 



Down — By the Causeway Water at Broughnamady northeast of Rostrevor ; 

 H. C. Mart, Jour. Bot. Feb. 1886. 



First found in Ireland by Mr. Hart. 



