88 Proceedings of the Royal Trkh Academy. 



Polypodium vulgare L., var. serratum "Willcl. 



Divisions 4, 5, 8. 9, 11, 23, 28, 39. IS'ot unfrequent in limestone 

 districts when the plant is growing strongly. It develops into var. 

 semilacerum and that again into var. camlricum. 



Eqnisetnm limosum Sm., var. fluviatile (L.). 



Divisions all except .5, If, 5, 9, 11, 20, 32, SIj., 35. The usual form 

 in shade or in running water. 



E. palustre L., var. polystachyum auct. 



8 Limrek. Thornfields '01 — Miss E. Armitage ! 

 15 Galw. SE. ITarble Hill '97— P. 



[Merely a sport, produced by exuberant growth or more often by 

 injiuy to the axis. 



var. nudum Xewm. 

 29 Leitrim LoughlLelvin '99— P. 



A sport, consisting of an absence of branching, the result of exposed 

 habitat. 



CHARACE^. 



So much material was obtained during my five years' field-work, 

 that I have in most cases supplemented my notes with brief references 

 to additional records, as given in Messrs. Groves' papers, &Q.., so as to 

 make the following a complete account of the distribution of Charace» 

 in Ireland so far as present information goes. In Irish Top. Bot. 

 the records given under each species include those of its varieties. 

 In the following lists I have separated typical forms from varieties. 

 My warm acknowledgments are due to Messrs. H. and J. Groves for 

 naming or confinning the very large number of the plants listed below, 

 with which my name is associated. 



Chara fragilis Desv. 

 Type — Divisions all, except 29, 35, 1^0. 



var. harhata Gant. 



1 Kerry N", Xear Tentry '94 — D. McArdle. 



9 Clare Eallaloe '96— Colgan sig. 



