PERISPOIUACEI. 405 



315. ERYSIPHE, lledw. 



Mycelium arachnoid. Appendages floceose, simple or irre- 

 gularly branelied. 



Asci containing 2 sporidia. 



1. Liiikii, iJv. On leaves of Artemisia. 



2. lamprocarpa. On leaves of CichomcerE. 



Asci containing 3-8 sporidia. 



3. graminis. On leaves of cereals and grass. 



4. Martii. On leaves of peas, etc. 



.5. Montagnei, Lev. On leaves of bnrdock. 



(). tortilis, Lk. On leaves of cornel. 



7. comnnniis, ScJilecJit. On leaves of various phnits. 



316. CH^TOMIUM, Kze. 



Perithecium thin, brittle, moutliless. Asei linear, contain- 

 ing dark, lemon-shaped sporidia. 



T. datum, Kze.; Grev. t. 230. On damp straw. 



2. cliartarum, Ehb. On damp paper. 



3. glabrum, B. On damp straw. 



317. ASCOTRICHA, B. 

 Perithecium thin, free, mouthless, seated on loose, branched, 

 conidiiferous threads. Asci linear, containing dark, elliptic 

 sporidia. 

 1. cliartarum, B. (no. 116, wllk ajr/.). On damp paper. 



318. EUROTIUM, Lk. 



Perithccia reticulated, vescicular, coloured, attached to muce- 

 dinous threads. Asci delicate. 



1. herbariorum, L/i. ; Grev. t. 164./. 1. On plants in herbaria. It is 

 supposed that this is merely an ascigerous state of Aspert/illidn. 



