466 GHAEACE^. [Chora. 



First found by H. C. Levinge in 1892. TteWestmeath station 

 is, 60 far, the only one known for the British Isles. 



Messrs. H. & J. Groves suggest ( Groves i8gj) that this plant, 

 •which is described and figured in Jown. of Bot. iSg^, p. sgo, may 

 be only a degraded form of the preeediag species. 



7. C. tomentosa Linn. 



Districts _ _ — _ — VI. VII. _ IX. — — — 



Lat. 53°-63J°, Galway, Roscommon, and "Westmeath. 



Lowland. Lakes and rivers ; locally abundant, i^^. July-Aug. 



VI. River Shannon below Portumna, Galway, 1843 {Moore) : 

 ■ Cfroves i88o. JN'ear the mouth of theWoodf ord river, Lough Derg : 

 N. C. z<?97.— VII. Belvidere Lake [L. EnneU], Westmeath, 1841 

 {Moore) : Land. Jown. of Bot. 1842 (as C. latifolia, WiUd.). Lough 

 Derevaragh and Lough Owel, Westmeath {Levinge and Groves) ; 

 Groves i8gj. Coosan Lough; and — IX. Ifear Riagdown Castle, 

 &c., Lough Ree : B.^K 1887. 



All the localities so far found for this plant belong to the 

 Shannon drainage. It may be expected, however, to spread to 

 East Ireland by means of the Royal or Grand Canals which connect 

 the Shannon with the LifEey. "While extendiag over the greater 

 portion of Europe, this species seems in the British Isles to be 

 confined to Ireland, the Norfolk plant formerly referred here being 

 now considered by the Messrs. Groves to be a hybrid between 

 C. Mspida and C eontraria (see Groves i8g^ a). This species is very 

 luxuriant in many of the Irish lakes, often attaining to a length of 

 three or four feet. 



First discovered by David Moore, in Belvidere Lake, in 1841. 



8. C. Mspida Linn. 



Distiicts I. II. III. IV. V. VI. VII. VIII. IX. X. — XII. 



Lat. 52°-56i°. Throughout Ireland, probably. 



Lakes, canals, ponds, &c. ; the typical plant is frequent. Frt. 

 June-August. 



Far. MACEACAiraHA Braun — IV. "Wicklow {Moore) : Groves 

 Z880.—Y. Maynooth, Co. Kildare {B. MArdle) : Groves z8gs. 



Far., EUBis Braun — This is recorded from Districts III., V.,VI., 

 VII., VIII., IX., X., and XII., and wiU probably be found to 

 occur throughout Ireland. 



