Botany and Zoology of Devon and Cornwall. 345 



Of the lower orders of acotyledonous plants, my materials are 

 too incomplete to furnish any adequate view ; nor, perhaps, 

 depending, as so many of them do, on the existence of the 

 superior orders, is it for the present purpose of much importance. 

 I have made out about 200 species, but am aware of many more 

 that I have not examined sufficiently to say any thing about them ; 

 and I have every reason to suppose our district very rich i^ th^se 

 lower departments. ,r\>}^ fVr 



The following are the principal phaenogamous genera belonging 

 to more northern, or more Alpine districts, in which we are 



Oxyria "J ng!^ 

 Swertia ^ fofftG 

 Trientalia ^^^ 

 Impatiens; ji 



Rhodiola'^jl ^^^ 

 Erigeron, 2sp. ^ 

 Cotoneaster 



We also possess but one species, (S. tridactylites,) out of 

 above a dozen, that are British, of the genus Saxifraga. 



The other genera, in which the district is believed to be 

 deficient, are, — 



'^"Of the genera we possess, those in which the greatest 

 deficiency in British species is found, are, I believe, — ^ - 



Carex "I "ij 

 ..^n^isii Juneus ] In these it is chiefly 



Veronica \ Alpine species that \' 



Vaccinium 1 are wanting. ' 

 Rubus J 



Campanula ' *imi? 



Dianthus , .fji^; 



a-Stta t^ 



Silene 

 Salix 



Of this last genus, I am not competent to speak with sufficient 

 precision. Fourteen species, undoubtedly distinct, I have found 

 in the district; and some that appear to me only as varieties, 

 though ranked at present amongst the British species. 



Amongst the Cryptogamia, the genera in which we are deficient, 

 in the principal natural orders, are as follows : — 



VOL. III. 2 X 



