TELIA 



321 



tion to the phenomena of germination and nuclear activities. 

 Other aecioid telial rusts are Fiiccinia grindeliae, Uromyces sciitel- 

 latiiSy and U. levis [Arthur et al. (1929)], but these species are 

 aecioid only in the sense that the aecial sori and telial sori look 

 quite alike. 



Fig. 126. Teliospores of various rusts. A. Surface view of epidermal cell 

 of Folypodhnn virginianuin that is occupied by teliospores of Milesia poly- 

 podophila. B. Uredinopsis osmimdae in epidermal cell of Osinunda cin- 

 namomea. C. Chrysoinyxa arctostaphyli, margin of sorus. D. Portion of 

 telial column of Cronarthnn ribicola. E. Portion of telial sorus of Melcnnp- 

 sora medusae on Populus. F. Ravenelia cassiaecola from Cassia cbamae- 

 crista. G. Uropyxis amorphae from Amorpha. H. Fhragmidium aiueri- 

 caninn from Rosa. /. Xeiiodochus carbojiarms from Sangiiisorba micro- 

 cephala. J. Nyssopsora echmata from Oefianthe californica. K. Endo- 

 phylhmi sentpervivi from Sempervivum. L. Fuccinia podophylU from Fodo- 

 phyllum peltatimt. M. Fuccinia coronata from Avena sativa. N. Gymno- 

 sporangimn clavipes from Juniperus virginimm. O. Uromyces caryophyl- 

 linus from Dianthus caryophyllus. {Ay C, E, G, I, adapted from Arthur.) 



