628 



The specimens vary considerably in size as well as general appear- 

 ance : those from Scotland, Yorkshire and Lancashire are very small, 

 the stems not attaining on the average more than a length of two inch- 

 es : those from Devonshire are somewhat larger, the figure represents 

 a Devonshire specimen of the natural size, and I have seen others of 

 a still more luxuriant growth. Some of the examples are erect, others 

 pi'ostrate, and those which grow on sand-banks have the roots densely 

 fibrous. 



Equisetum palustre, var. nudum, Gibson, MS. 



After a careful examination of this plant I am unable to find any 

 characters whereby to distinguish it as a species from E. palustre : — 

 the root, stem, sheaths and catkins seeming to me identical with those 

 of the species to which I have referred it. 



