296 DESCRIPTIONS OP SEVEKAL 



characters, we are enabled to establish T them, with 

 propriety, as distinct species. Thus, for example, 

 Myosotis rupicola, was at first considered only as a 

 variety of M. scorpioides, — a heterogeneous species 

 which has very justly been subdivided into several 

 species. Among the pedatifid-leaved Saxifragse, 

 we are apt to confound many very distinct species, 

 merely on account of the similarity in their exter- 

 nal appearance. Thus, for example, in Scotland, 

 Saxifraga hypnoides has been confounded with 

 S. elongella, and with other two new species, (as I 

 shall have an opportunity of shewing elsewhere). 



The Gramineae form a tribe whose general ap- 

 pearance is very much alike, and on that account 

 many real species have been regarded as mere 

 varieties. The Poa alpina glomerata of Hull's 

 British Flora, discovered by the late Mr G. Don, 

 on rocks by the side of the river Esk, about 

 six miles north of Forfar, Angusshire, is the Poa 

 Sadensis of Willdenow's i( Species Plantarum." 

 Although regarded by Wahlenberg as only a va- 

 riety of Poa alpina, yet I have no doubt it will 

 soon be admitted as a distinct species. 



Without further preface, I shall now describe 

 several new or rare plants, most of which were first 

 observed by my late Father. The descriptions of 

 these, I have drawn up from the original native spe- 

 cimens preserved in my father's herbarium ; and I 

 zyi&y mention, that I have seen all of them in a re« 



