318 ALISMACE^. NAIADACE^ [Butomus 



Butomus umbellatus L. Flowering Eush. 



Census 16+(1)— East 8+(l), Centre 6, West 2, 



Between Buttevant and Charleville '00 — Phillips. 



Near Biittevant '00 : rare — Phillips. 



Lismore '99— P. 



J^ear Limerick '00 — Gr. Pogerty. Shannon only, rare. 



Ennis '92, Levinge — Cyh. II. Shannon f. ; Corrofin. 



jS^enagh Biver near Dromineer'96 — Colgan. 



Pond near Bannow (Mrs. Boyce) — B. & M. '93 zoj.) 



Teeneran Lough near Gort '45 — Carter 795. 



B. Brosna at Parsonstown (M. Dowd) — More '72 614. 



Grand Canal near [Hazelhateh] — Mackay '25 ^22. 



Belturhet '99 (J. E. R. Allen)— West. 



MattockR., Hamilton; Boynenear Obelisk — Cyl. I., II. 



Canal at Bragan '00— Waddell. 



Blackwater mouth c, '96 — Mrs. Leebody. Doon Point. 



L. Neagh and waterways connected with it, c, '92 — P. 



Lough Leagh '91— P. Bare- i^/. NE. 



Glenavy '00— Waddell. Rare— i^. N:E. and 874. 



A plant of uncertain standing in many of its stations, but probably 

 an original native. 



Triglochin palustre L. Arrow-grass (genus). 

 Divisions all. Common. 



Triglochin maritimum L. 



Maritime and sub-maritime divisions all, namely : — 1, 2, 3, 4, 5, 6, 

 8, 9, 11, 12, 15, 16, 17, 20, 21, 22, 27, 28, 29, 31, 34, 35, 36, 37, 38, 

 39, 40. Whole coast common. 



Potamogeton natans L. Pondweed (genus). 

 Divisions all. Frequent. 



Potamogeton polygonifolius Poiu-r. 

 Divisions all. Frequent. Strongly calcifuge. 



Potamogeton jluitans Roth. 



(24 Longfd. River Inny below Ballymahon abundant (name some- 

 what doubtful) '85-6— B. & Y. /jj.) 

 37 Ai'magh Lough Neagh near Maghery '92 — P. 



4 



Cork Mid 



5 



Cork E. 



6 



Waterfd. 



8 



Limrck. 



9 



Clare 



10 



Tipp. N. 



(12 Wexford 



15 



Galw. SE 



18 



King's 



19 



Kildare 



30 



Cavan 



31 



Louth 



32 



Monaghn. 



36 



Tyrone 



37 



Armagh 



38 



Down 



39 



Antrim 



