Botany, 123 



Atriplex littoralis Z. — Down and Antrim ; local. 



A. farinosa Dum. — Frequent in Down; rare in 

 Antrim. In Ireland confined to the east coast. 



A. portulacoides L. — D., Newry river to Guns Island. 

 Northern limit in Ireland. 



Polygonum Rail Bab. — Frequent in Down ; rare in 

 Antrim. 



P. mite Schrank. — A., Shane's Castle. 



P. maculatum Trimen mid Dyer. — D., Dundrum. 



Euphorbia Paralias Z. — D., frequent; A., Bush- 

 foot. 



E. portlandica Z. — South Down and North Antrim. 



Mercurialis perennis Z. — Very rare in both counties. 

 A scarce plant throughout Ireland. 



Ulmus montana Z. — A., native in mountain glens. 

 Very rare in Ireland as an indigenous species. 



Salix triandra Z. — D., Ballyalloly ; A., south, rare. 



S. phylicifolia Z. — A., Glenballyemon ; not seen 

 recently. 



S. nigricans Sm. — A., rare, and not seen recendy. 



S. herbacea Z. — D., Mournes, common; A., Slieve- 

 nanee. 



Ceratophyllum demersum Z. — D., rare; A., Rathlin 

 Island. 



Juniperus nana Willi. — D. and A., mountains ; local. 



Taxus baccata L. — A., cliffs; now almost extinct. 



Hydrocharis Morsus-ranae Z. — D., Portaferry; A., 

 about Portmore. 



Malaxis paludosa Siv. — A., northern half; rare. 



Spiranthes Romanzoffiana Cham. — A., between 

 Toome and Antrim. The rarest plant in our flora, being 

 in Europe confined to four Irish counties : Antrim, Derry, 

 Armagh, and Cork. 



Cephalanthera ensifolia Rich. — D. and A., now pro- 

 bably extinct. 



Epipactis media Fr. — A., Glenarm. 



Habenaria albida Z*. ^/-. — Antrim and North Down, 

 rare. 



Allium vineale Z. — D., Rockport ; A., Antrim and 

 Shane's Castle. 



