Botany. 125 



P. Zizii Roth. — D., Lagan Canal ; A., chiefly in Bann 

 basin. 



P. praelongus Wulf. — A., widespread, but rare. 



P. flabellatus Bal).—\^., Killough. 



Ruppia spiralis Hartm. — Frequent in Down and 

 South Antrim ; much commoner than R. rostellata. 



Zannichellia polycarpa Nolte. — D., Salt marshes at 

 Belfast. Unknown elsewhere in Ireland, and has only two 

 stations in Great Britain. 



Eleocharis uniglumis Li)ik. — D., Groomsport, Kil- 

 lough, Bangor. 



Scirpus Savii S. and M, — In both counties, not 

 common. 



S. rufus Sclirad. — Frequent in Down; rare in Antrim. 



Eriophorum latifolium Hoppe. — A., near Rasharkin. 



Cladium Mariscus R. Br. — Castlewellan, Killough, 

 Strangford ; A., Lough Neagh, extinct (?). 



Carex pauciflora Light/. — A., Carnlough and Park- 

 more. Only stations in Ireland. 



C. muricata L. — A., Giant's Causeway and near Belfast. 



C. elongata L. — Found at Selshan, on Lough Neagh, 

 in 183S ; now extinct. Only one other Irish station, in 

 Fermanagh. 



C. Buxbaumii JFah/.—A., Harbour Island in Lough 

 Neagh ; nearly extinct through drainage. The only other 

 station in the British Isles is in West Inverness. 



C. aquatilis JVah/. — A. .Ballymena and Shane's Castle. 



C. limosa Z. — In both counties; very rare. 



C. strigosa JItids. — D., Belvoir Park, Crawfordsburn ; 

 A., frequent. 



C. filiformis Z. — D., abundant in Ardglass district; 

 A., formerly at Lough Neagh. 



C. Pseudo-cyperus Z. — A., Bog Meadows. 



Calamagrostis striata lYutt., var. Hookeri Syme. — 

 A., north margin of Lough Neagh ; rare. The variety is 

 endemic at Lough Neagh, growing in various spots round 

 the margin. The type is unknown in Ireland, and very rare 

 in Great Britain. 



Poa compressa Z. — D., Hillsborough, Lenaderg; 

 A., rare. 



