The Distribution of the Characece in Ireland, ri 



Several beautiful unincrusted forms from the Irish bogs. The distribution 

 of C. polyacantha appears to be very limited. It is recorded from Sweden, 

 Denmark, Germany, Switzerland, North Italy, and France. 



C. conti*ar!a, Kuetz. 

 113. Kerry, S., - Caragh, 1888. R. W. Scull}'. ^ 



124. KUdare, -^ ' -i ^^^^^> Monasterevan, 1893. R. Ll. Praeger. .■ 



125. Dublin, - - Glasnevin, 1882. D. M'Ardle. 



130. Galway, E., - L. Derg, 1885. B. F. and W. R. Ivinton. 



133. Westmeath, - L. Ennel, 1892. H. and J. G. 



139. Leitrim, - - L. Allen, 1883. S. A. Stewart. 



145. Armagh, - - Croaghan I., L. Neagh, 1880. H. W. Lett. 



147. Down, - - Clandeboye Lower Lake, 1891. R. Ll. Praeger. 



149. Londonderry,- Limavadyjunc, 18S9. W. D. Donnan and R. Ll 



Praeger. 



var. hlspidula* Braun. 

 133. Westmeath, - Brittas Lake, 1892. H. C. Levinge and H. and J. "G» 

 \'l M^%7-' :} C-g. '««5. C. Bailey. 



A common species in Ireland, occurring in great quantity in the large 

 lakes, and varying considerably from the commonest form, which is a small 

 slender plant resembling C. fragilis, to the very large lax form in Brittas 

 Lake, Westmeath, which grows three or four feet high and has branchlets 

 \\ inches long, and to the stout compact form from Loughs Derg, EnneL 

 andDerevaragh, with short, stout, incurved branchlets resembling the var. 

 crassicaiilis of C. vulgaris. C. contraria is world-wide in its distribution, 

 occurring in all five Continents and in Australia. 



C. denudata^ Braun. =C. dissoluiay Leonh. 



133. Westmeath, - Brittas Lake, 1892, H. C. Levinge. 



This plant resembles the large forms of C contraria from the same lake, 

 but is almost entirel}^ destitute of cortex. The primary series of cortical cells 

 are occasionally partially developed above the whorls, but are usually 

 represented by a single cell above and below, each branchlet growing 

 outwards instead of adhering to the internodal cell. C. demidata has 

 been recorded from single localities in Switzerland and Italy, and from 

 Cape Colony ; but the Irish form is more extreme than either of these. 

 It is doubtful, however, notwithstanding the apparently important 

 differences, whether these plants may not all be only degraded states 

 of C. contraria. 



(TO BE CONCI.UDED). 



