B, M WE AXXiElT PL ANT S . 

 1 I 



Plate I, 



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''W,i'<^SSi.I* 



E.C o^GMWooli^ai-acUL^ iitk 



WeaJdexi, Algss, Ma^rdaantiLes, 

 Eqnisetites, etc. 



