PLATE XXXIII. 



CHARA CEASSICAULI3 SUBHISPIDA LOXGIBRACTEATA. 



Pis'. 1, Plant, natural size. 

 " 2, Stern, showing stipular whorl, bases of leaves, and two fertile 



nodes. x50. 

 " 3, Carpogone with spore. x50. 

 " 4, 5, Cross-sections of stem; 5 «, b, spines growing from primary 



cortex-cells. x50. 



