322 THE NATURALIST. 



III. Explanatory. 

 I had originally intended to terminate the present list with the Naiadacem^ 

 as my attention had hitherto been devoted almost entirely to the, higher 

 Orders of Flowering Plants ; but I trust now to be able to carry it through 

 to the Filices, as I shall be able to "look up" the GlumacecB, &c,, while the 

 earlier portion of the list is in course of publication. I must, however, state 

 my present inability to determine which we have of the multitudinous species 

 oi Ruhus and Salix, but hope during the coming season, to do something 

 towards the discrimination of the former at least. 



The list is arranged according to the fifth edition of Babington's 

 " Manual," a reference to vv^hich vdll be found after the name of each species, 

 any remarks in inverted commas, coming before such reference, are taken 

 from the " Manual" itself The only other work from which frequent quota- 

 tions are made, is the first volume of the Old Series of the Phytologist," 

 [Phyt, i. O.S. pp. 983 — 995.). which contains a long and useful list by G. G. 

 Mill, Esq., of the plants of Great Marlow, and is here occasionally alluded 

 to as the Marlow list. One or two other works are incidentally referred to. 

 Among those who have personally rendered me assistance, I must thank 

 especially. Miss Chandler, Er. Bowstead, and Mr. Ullyett, of Wycombe ; 

 Mr, J. C. Melvill, Mr. T, P. Lucas, and one or two others whose names I 

 am not at liberty to mention, but whose communications are placed in in- 

 verted commas. The localities marked MS. are contained in a list of Loud- 

 water plants kindly communicated by a friend. 



The following are the signs which I have employed in the list ; when 

 affixed to a locality instead of to a species, they are to be understood as 

 regarding the species in that locality only : — 



* scarcely natui^alised in the district. 



naturalised, but probably originally introduced. 



t " Possibly introduced, but now having the appearance of a true 

 native." 



[ ] Some doubt attaches to the species or locality thus enclosed ; or, 



the former is one never reckoned among British plants. 

 ! Following a locality or authority, signifies that an authentic speci- 

 men has been seen. 

 For all the information for which no other authority has been given, I am 

 responsible ; nor have I felt it necessary to quote from other works any par- 

 ticulars the accuracy of which I myself have proved. As I have exercised 

 the greatest possible care and discrimination, not only in my own observa- 



