THE CKYPTOGAMIC FLORA OF KENT. 43 



No. 251. S. viyninalis-triandra, j Trevirani, S. Treviram, Spr. 

 Style very short, stigmas emargiuate or cloven, as in hijjjjojjhaefoUa. 

 Leaves very like hippoiihaefulia. 



No. 249. S. viminalis-triandra $ jiilis gracilibus germinibus 

 sterilibns, S. Trevirayii, Spr. Catkins more slender than in 

 lanceolata, Smith, and scales less pubescent. The leaves more 

 decidedly serrate than in S. hippophaefolia. 



No. 250. S. viminalis-triandra ^ (of Wimmer's ' Salices 

 Europseas,' p. 140, where this so-called hybrid is named Salix 

 triayidra viminalis). 



This appears the same as myfusca from Wobnrn, i.e., the male 

 of S. hippophaefolia. Whatever may be thought by others of 

 S. Trevirani and the forms mentioned above, I will only say for 

 myself that I see much resemblance to the triandra group, but 

 scarcely any to the viminales. 



Dr. Anderson, in his able and remarkable monograjph of the 

 genus in DeCandolle's 'Prodromus,' p. 271, refers S. Trevirani and 

 ;S^. hippophaefolia to a species called 8. multiformis, Doll., without 

 any mark of hybridity, and says that it is "inter S. triandram et 

 S. viminalem media." S. Trevirani is stated to be hardly distm- 

 guishable from S. imdulata, Ehrh. ' A. 8. undulata ad Mppo- 

 phaefoliam. formse varise itaque seriem plane contiguam efficiunt.' 

 But 8. undulata, Ehrh. is placed in the monograph nearly seventy 

 pages farther back, and has the mark of hybridity f | j^i'efixed to it. 

 It would seem, therefore, as if — according to this theory of hybridity 

 — one name (say 8. midtiformis, Doll.) should include all these 

 forms. I should prefer, however, at present to call Dr. Eraser's 

 interesting willow the male of 8. hippophaefolia. 



THE CKYPTOGAMIC FLORA OF KENT. 



By E. M. Holmes, F.L.S. 



(Continued from vol. xv. p. 237). 



HEPATIC^. 



The following list of Hepaticae found in Kent, although more 

 extensive than might have been expected from the geological 

 character of the county, must nevertheless be looked upon as far 

 from complete. Many of the species are so minute, and grow so 

 mixed up with others and with various mosses, that their presence 

 is only revealed by then- fructification, or by accident when 

 examining mosses under the microscope. 



A few species found in Sussex upon Ardingly, Harrison's and 

 Eridge Rocks, &c., such as Bhjttia Lijellii, Jungermannia lanceo- 

 lata, J. minuta, Bazzania trilobata, and 8capania umbrosa, can 

 scarcely be expected to occur in Kent, since there are no rocks in 

 that county of equal extent or possessing similar advantages of 

 shade and moisture. 



Several species which are mentioned without localities in 



