35: 



UREDINEAE. 



aecidia {Aec. parnassiae Schleclit.) oi 

 jycnidia are unknown 



Parnassid palustris. Sperniogonial 

 pycniclia are unknown. 



P. scirpi D. C. (Britain). Uredo- and teleutospoi-es on Scirpus; aecidia, 

 according to Chodat, = .1 ea nymphaeoides on Nymphaea, JV^iphar, and JJvi- 



accor 



nInU'OHh: 



l-'iii. \h>i. — l'iixfiiiM soMAtolins on Cirsiain urvensc. Tlie plants are abnormally 

 elongated ; the leaves have remained smaller and simpler, and are thickly beset 

 on the lower side with patches of chocolate-brovrn iiredospores. (v. Tubeuf phot.) 



P. eriophori Tlilini. Uredo- and teleutospores on Eriophorum latifolmm 

 in Siberia and Denmark ; Rostrup gives as the aecidial form Aec. cinerariae 

 Kostr. 



P. obscura Schroet. Uredo- and teleutospores on Luzula ; aecidia on 

 Ikllis perennis (Plowriglit). (Britain and U.S. America.) 



P. septentrionalis Juel. Uredo- and teleuto.spores on Polygonum viri- 

 parum; aecidia (.lee. Sommerfeltii) on Thalictrum alpimim in Scandinavia, 



