are all parallel to one another. Closely resembling the plant 

 here photographed is the Rosemary-leaved Willow-herb 

 (Epilobium rosmarinifoHuni). Its leaves are usually more 

 numerous, narrower, and more strap-shaped, and its stem is 

 taller and, as a rule, more branched. But the most constant 

 difference between the two plants is to be found in the 

 length of the stalk which bears the stigma (style). This 

 is as long as the stamens in Epilobium rosmarinifoUum^ but 

 only half this length in Epilobium Fleischeri. 



3S 



