UROMYCES. 



339 



of pycnidia precedes that of teleutospores. The latter have 

 a flattened concave base and rounded apex ; their episporium 

 is marked with delicate ribs running from apex to base. 



FlQ. 181. — Vromvcts Teppenanus on twigs of ALbizzia montana brought by 

 Prof. Stahl from Java. (v. Tubeuf phot.) 



Fuccinia. 



Teleutospores two-celled, and each abjointed from its own 

 sporophore from large distinct sori. Each cell has as a rule 

 only one germ-pore. Uredospores, teleutospores, and pycnidia 

 (spermogonia) are not known in all the species. 



(1) Pycnidia, aecidia, uredospores, and telewtospores develop on the 



