EQUISETACEjE. 



1029 



6. Marsh Equisetum. Equisetum palustre, Linn. 



(Fig. 125-1.) 



(Eng. Bot. t, 2021.) 



Steins mostly fruiting, but all nearly 

 similar, erect, about 1 to 1| feet high, 

 much thinner than in the smooth F., 

 and marked with only about 6 to 8 pro- 

 minent striae or angles, and deep furrows ; 

 the branches but few in a whorl, not 

 very long, and not so thin as in some 

 species. Sheaths 3 or 4 lines, with as 

 many pointed or shortly subulate teeth 

 as striae. Spike as in the smooth F. 



In marshes and spongy bogs, in Eu- 

 rope and Russian Asia, from the Medi- 

 terranean to the Arctic regions, but per- 

 haps not in North America. Common 

 in Britain. Fr. summer. 



Fig. 1254. 



7. Rough Equisetum. Equisetum hyemale, Linn. 



(Fig. 1255.) 



(Eng. Bot. t. 915. Scouring Rush.) 



Stems mostly fruiting, but all similar 

 and simple, or rarely with very few 

 branches, 1 to 2 feet high or more, faint- 

 ly marked with 15 to 20 striae, and rough 

 to the touch. Sheaths 3 to 5 lines long, 

 white, with black rings round the top 

 and the base ; the teeth very minute and 

 blunt, or rarely shortly subulate. Spike 

 6 to 9 lines long, with a little conical 

 point on the rounded top. 



In marshes and wet woods, in Europe 

 and Russian Asia, extending from Spain 

 and Italy to the Arctic regions, but more 

 common in the north, and in North Ame- 

 rica. In Britain, chiefly in Scotland, Ire- 

 land, and northern and central England. 

 Fr. summer, rather late. 



Fig. 1255. 



