CRUCIFEROUS TRIBE. 



49 



stringy; petals yellow, longer than the calyx. -A large 

 plant, growing on the banks of rivers, remarkable for 

 the number of long stringy roots which it sends out 

 from the lower joints of the stem. FL June August. 

 Perennial. 



* Horse Eadish, which is placed by some botanists 

 in the genus Cochledria, is now referred to the present 

 genus under the name of Armordcia msticdna. It can 

 scarcely be considered a native. 



8. SUBULARIA (Awl-wort). 



1. S. aqudtica (Water Awl-wort). The only species. 

 A small plant common on the banks of Alpine lakes! 



SUBULARIA AQUATICA (Water Awl-wort). 



The roots are composed of long white fibres, the leaves 

 E 



