212 



Venturia chlorospora corresp. Fusicladium saliciperdum. 



— tremulae — — radiosum. 



— ditricha — — betulae. 



— cerasi — — cerasi. 



— fraxini — — fraxini. 



— inaequalis — — pomi. 



— — var pyracanthae — — — var pyracanthae. 



— pirina — — pirinum. 



— crataegi — — crataegi. 



— aucupariae — — orbiculatum (see 



Aderh. 03). 



921. Venturia graminicola Wt. II '^^ Syll. I ='". 

 Aira uUginosa. S. Lindersvold. August. 



922. Venturia chlorospora (Ces.) Karsten, Syll. I "^ Wt. II "'«. 

 Salix caprea. J. Viborg (^/g 03!). 



923. Venturia populina (Vuill.) Fabricius 04^'^ Syn: Didymo- 

 sphaeria pop. Vuillemin 89, Syll. IX ^^'', Venturia tremulae Frank, R 

 02 a "^l 



On fallen leaves of Populus tremula, April— July. J. Langaa C^h 02!). 



924. Venturia ditricha (Fries) Karsten, Syll. I ^", Wt. II "", R 02 

 a"", Syn: Sphaeria dit. Fries S. M. U^'\ 



On fallen leaves of Befula alba. J. Krabbesholm Skov CA 01!), Langaa!; 

 B. Finnedalen (Neger 06). 



925. Venturia rumicis (Desm.) Wt. II '''^ Syn : Sphaerella rum. 

 Cooke, Syll. I "I 



On living leaves of Rumex nemorosus. Falst. Tromnaes (^''/t 98 see R 99 b). 



926. Venturia glomerata Cooke, Syll. 1°'^, Syn: Venturia geranii 

 Wt. II *^* (exclus. synon.), Stigmatea get. Ouds 73 s" c. icon. &. Syll. 

 I ="1 nee. Fries S. V. ""^ See tab. Ill fig. 40 6. 41. 



Peritheciis in maculis decoloratis hypophyllis, gregariis, liberis, mi- 

 nutis, pilis rigidis erectis 35—64 M longis, basi 4 1^ brevis, apice acutis, 

 coronatis. Ascis cylindraceo-clavulatis, brevissime stipitatis, 35—40 i^ 

 X 7—8 ^', aparaphysatis, octosporis. Sporidiis subdistichis, clavato- 

 oblongis, uniseptatis, constrictis, loculo, infero multo minore, chlorinis, 

 10-12 1^ X 5 ^^. 



This species is very much like Venturia Johnstonii, its perithecia are 

 placed on the upper side of decaying spots in living leaves of Ge- 

 ranium. It has often been confused with Coleroa circinans, which 

 does not cause dead spots, and with Dothidella geranii (Ouds. 97 ^^^) 

 whose perithecia are conglomerate without setula, and which only 



