724 



holds good in any instance, and certainly not in the present, for the 

 Greek word rsXfjiarBios, signifying * growing in mud,' is less fanciful, as 

 applied to the present species, than the Latin w ord Jltwiatile, or 'grow- 

 ing in rivers.' Moreover, the former objection is oveiTuled in the pre- 

 sent instance, by Ehrhart's name having been employed in the ' Flora 

 Danica,'* a work of acknowledged authority, and recently by Dietrich, 

 as quoted above. I may also add that it is received as authority by 

 Wahlenberg, than whom we have no more careful or pains-taking 

 nomenclaturist. 



Fertile stem of Equisetum Telmateiai. 



The roots and rhizoma present no peculiar characters ; the latter is 



*Flova Danica, 1469. 



