{* ) 



ORDER I. 

 EQUISETACE.E. 



* Laborum dulce lenimen." 



HOR. 



1. EQUISETUM. Catkins terminal; seeds separately embraced by 

 4 spiral filaments, presumed to bear pollen. 



1. EQUISETUM. 



1. E. sylvaticum, stem rough, furrowed, the furrows about 12; 

 sheaths light brown, with about 12 darker teeth; branches about 

 12 in a whorl, compound, curved downwards, smooth, square, the 

 branchlets triangular. 



Hob. Moist woods and deans, frequent. Longridge Dean. 

 Woods about Houndwood, &c. April, May. 2/ 



From 12 to 18 inches high, with several whorls of compound 

 branches, which are arched in the most graceful manner, 

 and readily distinguish the species. The fertile plants are 

 at first naked, but they begin to acquire branches before 

 the catkin has withered. 



2. E. fluviatile, stem smooth, even; sheaths with numerous se- 

 taceous teeth ; branches numerous, simple, or with very few 

 branchlets, rough, quadrangular, the angles furrowed ; fertile 

 stems unbranched, with numerous crowded deeply-toothed 

 sheaths. 



Hob. Watery places, frequent. April. 7/ 



The fertile stems, about a span in height, appear very early 

 in spring, when they are conspicuous from their large yel- 



