Explanation of Plates. 



PLATE XXXII. 



UROMYCLADIUM. 

 Fig. 



273. Leaves of Acacia longifoh'a, with the tuberculate spermogonial sori of Uromy- 

 cladium maritimum . ... ... ... ... ... nat. size 



.274. Leaves of Acacia melanoxylon, the upper with tuberculate spermogonial sori, and 

 the lower with minute pulverulent sori, both of U ' . robinsoni. ... nat. size 



275. Leaf of Acacia *pvcnantha, with the minute powdery sori of U . simplex, nat. size 



