Potamogeton.] NAIADACE^. 379 



I. Killamey {Babington) : Cyl. Ditches near Elennendlle, 

 Keny ; R. W. S.—ll. In the Suir near Clonmel {Moore) ; pond at 

 Tubberaheena, Tipperary {Miss A. Taylor) : Cyl.—lll. In Co. 

 Kilkenny near Waterford ( Carroll) : Cyl. — IV. In the Slaney 

 near Enniscorthy {J. Morrison) : Cyl. Pool by the railway above 

 Macmine Junction, "Wexford : Marshall i8g8. — V. In the Grand 

 ■Canal at Portobello, Dublin {Moore) : Cyb. — and at Hazelhatch, 

 1893; JV. C. Grand Canal, Monasterevan : S^art i88^. Ditches 

 by the Barrow below Athy, Co. Kildare ; B. W. S.—YI. About 

 Limerick, not infrequent ( W. S. Sarvey) : Flor. Sib. In the 

 alluvial flat by the Maigue, from Fenybridge to Kinekirk, abun- 

 dantly : Stewa/rt i8go. — VII. Dromineer Bay, Lough Derg, and 

 along the shores of islands and both sides of Lough Derg at Killa- 

 loe : Sart 1881 y. Xilbeggan canal. King's Co. : Praeger iSgy. 



13. P. obtusifolius Mert. & Koch — Blunt-learned Pond-weed. 



P. gramineus Linn. 



Districts I. II. — _ V. VI. — — — X. XL XII. 



Lat. 61^°-55°. South to ISTorth. Type, English-British. 



Lowland. Ponds, ditches, bog-drains, &c. ; local and rare. Fl. 

 June-July. 



I. Pond near Eoss Island, Killarney ; R. W. S. Abundant in 

 Ballypheane bog near Cork ( Carroll) : Cyb. At Shepperton, Leap, 

 sparingly: Allin's Cork. At Union HaU, 1896; J. Groves. — 

 II. Near Toughal : Flor. Sib. East Grove, Great Island : Flor. 

 Cork. Corrin bog near Permoy {T Chandlee) : Cyb. Bog near 

 Charleville, and in Ballybutler Lake, Cork {Rev. T. Allin) : Rec. 

 Add. Bog near Mayfleld, Cork, 1896; Phillips.— Y. Glack Bog 

 near Castle Bellingham : Butler i8qo. — VI. Farrihy Lake, Clare ; 

 P. B. C Kelly. — X. Ditches near a lake between Belturbet and 

 •Cavan, and ditches communicating with Lough Ifeagh near Lurgan 

 {Moore) : Cyl. Near Drum, Clones, Co. Monaghan {J. Bain) : Rec. 

 Add. Pymore Lake, Eavoiu- Eoyal, Tyrone : Sart 188'/. Several 

 stations in Co. Armagh, as in Drummuckavall Lake ; Mullaghmore 

 Lake ; lake at Carnagh, near Keady ; and abundant at the mouth 

 of the Closet river: Praeger i8gj. — XL JSTear Killybegs in a 

 deep dike at the narrow end of the lake above St. Catherine : Swrt 

 1886. Kiver at Eathmelton ; Praeger. — XII. Apparently more 

 frequent -in the North-East than elsewhere in Ireland ; see numerous 

 localities in Cyl., Flor. W.-K, and S. SfP. i8gs- 



