536 



trice zonatis; conidiis sarciniformibus, fuscis, muralidivisis, 36—40 M 1., 

 30 ,u cr. 



On living leaves of Arnica montana. F. Nyborg. 



3204. Macrosporium cirsii Ldau IX "". 



On living leaves of Cirsium arvense. J. Viborg (Aug. 02!). 



Alternaria. 



Alternaria is very closely connected with Clasterosporium, Sporo- 

 desmium and Helminthosporium and is like those form-genera regar- 

 ded to represent the conidial fructifications of Leptosphaeria and other 

 Sphaeriaceae, it is for instance supposed, that 



Alternaria brassicae corresponds to Leptosphaeria napi (Ldau 08 ^^''). 

 — trichostoma — Pleospora trichostoma. 



3205. Alternaria tenuis (Fries) Nees, Syll. IV ^'^ Ldau IX ^^^ c. 

 icon., Syn: Torula tenuis Fries S. M. Ill ^'"', "Helminthosporium gra- 

 mineum" 0rsted 63 c ^^^ c. icon. 



Common on moist straw of Avena, Triticum, Hordeum (M. L. M. Octob. 10) 

 etc. also on Medicago sativa (see M. L. M. 07). 



3206. Alternaria brassicae (Berk.) Sacc, Syll. IV 5«, Ldau IX ^^s 

 c. icon., Syn: Sporidesmium exitiosum Kiihn, Polydesmus ex. Kiihn, 

 Syll. IV '"^ Skulpesvamp (R 02 a ^", M. L. M. Oktob. 09), Rapsens 

 Branddug (R 93 d "=). 



Very common and must be considered a serious malady for all species of 

 Brassica cultivated for seed-production. 



3207. Alternaria brassicae (Berk.) Sacc, var dauci (Kiihn) Ldau 

 IX ^^o, Syn: Macrosporium dauci (Kuhn) Rostrup 88 a ^^\ 00 a, 02 a «", 

 Gulerodens Branddug (R 93 d ^'^). 



Common on cultivated Daucus carota. 



Dematiaceae — Phaeohelicosporae. 



Helicosporium. 



3208. Helicosporium pulvinatum Fries S. M. Ill ^^\ Syll. IV '^«, 

 Ldau IX "2 c. icon. 



On wood of Quercus robur. S. Fortunen. May. 



3209. Helicosporium Fuckelii Fresenius, Syll IV ^=^ Ldau IX "" 

 Saccardo's translation of Fresenius's description in Beitrage zur 



