44 The Irish Naturalist. [February, 



Cystopteris fragilis, Bernh, — Throughout Donegal., except 

 south-east, and not unfrequeut in mountains westwards. Var. 

 deutaia, in at least three localities in Co, Donegal. 



Lastraea Thelypteris, U— New locality, S.W. Donegal. 



22. Ophlogrlossum polyphyllum, Syme .? 



23. Equisetum trachyodon, Braun.— Two localities, vS.W. Donegal. 

 Lyco podium clavatum, L.— Not un frequent in Donegal. To 



1,950 feet. 

 L. alpinum, Iv— Half a dozen localities. 

 Isoetes lacustrls, var. falcata, Tausch —Near Ballyshannon. 



{fide A Bennett). 



24. Chara contraria, Kuetz.— Fanet and Ardara. 



25. C. hispida, L.— Fanet, 1898. 



C. fragills, Desv.. var. dellcatula. — Frequent in Donegal. 



The above 25 additions bring the Donegal total to 



744 4- 25 = 769. But from this we have to deduct Glaucium 



flazmvi^ Lepidiiim Smithii, Hieraciiim borcale, Sinvi lati- 



foli7(??ii^?) Lithosperimun arve7ise, and Mclainpyi'iun sylvaticmn, 



all of which are counted in the Cybelc\.Q)\.2\ of 722. The reasons 



for excluding these are given. This leaves a residue of 763. 



In conclusion I wish to say that it is nowise ni}" desire to 

 find fault with this most careful and creditable production. 

 But I think it will be of use to have pointed out some of those 

 errors that were certain to occur, and I am bound to uphold 

 the character of the flora of my native count3^ 



I would like here to suggest an improvement to a " botanical 

 subdivision " of the county suggested by Mr. R. I4o3'd 

 Praeger."" He divides the county in two, drawing a line along 

 the Kilmacrenan barony to the Gweedore River and adding 

 that northern portion to Inishowen. Any such line crossing 

 the west of the count}^ is at variance with its botanj^ which is 

 harmonious from Sheephaven to Donegal Bay. The onl}^ 

 division practicable would be Inishowen and Raphoe 

 baronies (my I., II., and V.) on the east, which are fairly dis- 

 tinct botanically from the rest of the county. Fanet and the 

 rest of District III., are intermediate but more western. 

 Tirhugh in the south should be added to the Fermanagh 

 district, scientifically, but it would be a mistake to remove it 

 from Donegal. The county is better left as one subdivision 

 as it stands. The Foyle and Malin Head are great boundaries 

 phytogeographically as well as biologically generall}'. 

 Carrablagh, Co. Donegal. 



^ On the Botanical Subdivision of Ireland, Irish Naturalist, Feb. 1896. 



