1861,] ISOETES HYSTRIX. 45 



FRANKENIACEjE. 



Frankenia Icevis. Little saltmarsh at the foot of Abbott's 

 Cliff. 



RANUNCULACE^. 



Clematis Vitalba. In all the hedges. 



Anemone nemorosa. Plentiful in the copses. 



Ranunculus circinatus [Batrachium, Reich.) . In the Dour, at 

 the back of Buckland. 



The Flora of Dover does not appear rich in plants of this family. 

 I noticed none but the most common species. 



Omitted in their proper places. 



Pyrethrum Parthenium. On the walls of Kersney Abbey, near 

 the gateway. 



Agrimonia Eupatoria. Near Poulton Farm, and ascent of 

 Abbott's Cliff. 



ISOETES HYSTEIX. 



Recent discovery of Isoetes Hystrix, by George Wolsey, 

 Guernsey ; in a Letter to the Editor. 



This little plant I found in damp spots on L'Ancrisse Common, 

 in this island, in June 1860. 



The following description of the species and its localities is 

 compiled from Grenier et Godron, ' Flore de France/ and from 

 Lloyd's ' Flore de I'Ouest de la France.' 



Isoetes hystrix, Durieu in litt., Bory, Compt. rend. Acad. Sc. 

 vol. xviii., January, 1844, etc. 



Root tapering, black, furrowed, surrounded by white, shining, 

 2-3-toothed scales. Lloyd says three-toothed, Gr. and God. two- 

 toothed, sometimes with an intermediate short tooth. Leaves 

 linear, pointed, scarcely furrowed, slightly convex on the outer 

 side with prominent nervation, contiguous at the base, and form- 

 ing a bulb, spreading above, one or two inches long. Macro- 

 sporanges finely reticulate, microsporanges truncate-aculeate.. 



Grenier and Godron state that it grows in dry mountainous 

 or hilly pastures in the Isle of Corsica, and never in inundated 

 places ; abounds in moist pastures, and on the seashore, Bonifacio, 

 etc. 



