286 The Irish Nattiralist. December, 



Potamogreton pectinatus, L.— In great abundance in Lough Doo 

 and Lough Nanibrack, and thrown up on the shores in masses like 

 Zostcra, Sparingly in one of the Dooniver Loughs. 



P. filiform is, Nolte.— Very abundant on the south and east sides of 

 Keel Lough, and down the outflow river to the sea, where it occurs 

 in pools on Trawmore. Also in Sruhillbeg Lough. 



Ruppla rostellata, Koch.— Dooniver, in two brackish lakelets, and 

 in one which is above tidal influence. 



Eriocaulon septang-ulare, With — East only, frequent. Sraheens 

 Lough, whence it has been recorded by Marshall (Joe. cit.\ and very 

 fine in bog pools to the north of it. Abundant in Lough Gall, and 

 in three lakelets by the road i^ miles south of it. Mweelin Lough. 

 More's record '-'in a small lake at north end of Achill " {loc. cit.) 

 possibly refers to Lough Gall. 



Carex rlg'lda. Good. — Slievemore, 1,800-2,200 feet. Abundant on the 

 Croaghaun range down to 1,200 feet. 



C. Ilmosa, L. — Lakelets S.K. of Lough Gall, and abundant at north end 

 of Keel Lough. The plant at the latter station resembles C. irrigua^ 

 but Mr. Bennett writes "rather lifnosa^ I believe." 



C. fliiformls, L.— Only in a swamp east of the north end of Keel 

 Lough. 



Psamma arcnaria, R. & S. — At Dooega Head grows in boggy soil on 

 the verge of the cliffs, 70 to 150 feet above the sea. No sand any- 

 where near. 



Agrostls vulgraris, L., var. pumlla, L. Frequent. 



tGlycerla aquatica, Sm. — One patch in a swamp on west margin of 

 Lough Nambrack. While the range of this grass in Ireland is such 

 as to render its occurrence here as a native highl}' improbable, no 

 hint of introduction was gained by a study of the plant's surround- 

 ings. 



Hymcnophyllum tunbrldgrense, Sm — About Slievemore and 

 Croaghaun, not rare. FI. unilaterale is very frequent. 



Adlantum CaplIIus-Veneris, L.— 'Cliff on north-west side of 

 Achill Island! Mrs. Boycott.'— A. G. More, "Recent additions,' 

 1872. Base of Croaghaun, 1882— Hart, loc, cit. These notes refer, I 

 believe, to the same station. 



Cystopterls frag-llls, Bernh.— Only on Slievemore, where it is abun- 

 dant on the rocks at about 1,800-2,100 feet. 



Lastrea aetnula, Brack. — Common at all elevations, with L. dilatata. 



Isoetes lacustrls, L— Growing on bosses of peat in Keel Lough, and 

 among boulders in Annagh Lough. 



Chara fragills, Desv.— In the brackish lakelets at Dooniver. 



C. aspera, Willd., var. sublncrinis, Kuetz.— Abundant in Keel 

 Lough, Lough Doo, and Lough Nambrack. 



C. vulgaris, L- — Pools on Keel Strand. 



N ltd la opaca, Agardh.— Growing on bosses of peat in Keel Lough, 

 and on sand in Dooniver Loughs. 



