314 POTAMOGETONACE^. \Potamogeton. 



bog near Castle-Martyr; Flor. Cork. Bogs near Cork; 

 I. C. — 2. Corrin bog, near Fermoy ; Mr. T. Chandke. Near 

 Youghal ; Flor. Hib. — 10. Ditches near a lake between Bel- 

 turbet and Cavan; D. M. — Ditches communicating with 

 Lough Neagh, neai* Lurgan; D. M. — 11. Lakes in Fanet, 

 Donegal; Prof. E. Murphy. — 12. Ditches by the Lagan, 

 near Belfast (Mr. Millen). Drains at Portmore, (Mr. 

 Templeton) Fhr. Zflst. Not unfrequent in and about Enagh 

 Lough and Lough Beg, and near Moneymore, Derry. Several 

 places in Antrim, especially abundant at Portmore ; D. M. 

 Perhaps overlooked in the midland counties. 



14. P. pusUlus (Linn.) — Small Pond-weed. 

 Districts 12345--89--12 

 Lat. 51°-56°. Throughout Ireland. 

 Type in Great Britain, British. 



Pools and ditches ; frequent. Fl. June, July. 



P. compressus (Linn.), which is by many botanists con- 

 sidered a variety of P. pttsUlus, is described as growing 

 on Corrin bog, near Fermoy ; Mr. T. Ghandlee. In muddy 

 ditches along the Grand and Royal canals (near Dublin) ; Ir. 

 Flor. In the river Bann and in a pond at Florence-court 

 {Flor. Hib.), but we have no specimens from which to judge 

 whether the plant has been properly named. Mr. Carroll 

 finds P. gramineus only on Ballyphehane bog. 



15. P pectinatus (Linn.) — Fennd-leaved Pond-weed. 

 Districts 1 2-46-789- 11 12 

 Lat. 51°-56°. Throughout Ireland. 

 Type in Great Britain, British. 



Ditches, pools, streams, especially near the sea ; frequent. 

 Fl. June, July. 



Var. pflabellatus {P.flabellatus Bab.) 



Rare — 2. Plentiful at Ballycotton, Cork; I. C. In the 

 river Puncheon, near Fermoy; Mr. T. Ghandlee. In the 

 Suir near Clonmel; D.M. — 5. In the canal near Straffan, 

 Kildare ; Mr. J. Douglas. 



