262 



Explanation of Plates. 



PLATE XI. 



(All Figures X 250.} 



PUCCINIA. 

 Fig. 



88, 89. Teleutospores of Puccinia tetragoniae on Tetragonia im-plexicoma, one with 

 nearly vertical septum in upper cell. 



90. Teleutospores, strongly warted, of P. ludwigii on Rumex flexuosus. 



91. Teleutospores strongly warted, of P. ludwigii on Rumex brownii, one spore being 



Tri-phragmium-Yfce. 



92. Uredospore and teleutospores of P. acetosae on Rumex arifohus, all the latter 



with smooth walls. (Sydow, Uredineen, 954.) 



93. Teleutospores of P. muehlenbeckiar on Muehlenbcckia adfressa. 



94. Teleutospores and mesospore of P. diclsiana on Threlkeldia sp. 



95. Uredospores of P. kochiae on Kochia sedifolia, showing the characteristic nume- 



rous germ pores. 



96. Teleutospores of P. kochiae on Kochia sedifolia. 



