LLOYD 



PLATE 2 



B 



S 



/ 



^_ 



(fLStL. 





J 



A el 





SY.N. H N. AMtK. 



' r K^ (< M\ ,V / yV,, ^./(-t< It 



A. The type specimen of Parthenium argentatum Gray. 



B. Transverse section of a very old stem. 



