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("an juvenilia?"), and the pictured ascus looks conspicuously strange 

 among the dark-spored relatives. 



Rehm has recently stated (Ann. Myc, Decbr. 1906), that also he 

 constantly has found the spores hyaline, 2-locular. 



Under these circumstances it is to be supposed, that the darkness 

 of the fungus' spores (and thus its Pseudovalsa-character) is a phenome- 

 non, which is not common, and our examinations have quite confirmed 

 this. The fresh perithecia proved all to contain asci with hyaline (or 

 faint yellowish) 1— 3-septated spores, quite of the appearance, by whicli 

 they are characterised in the description of Berkeley and Brown. Not 

 until later, when the material had been kept circa 3 weeks, we found 

 in the opened perithecia a more or less advanced brown-colouring of 

 some of the spores, and in extreme cases they had become entirely 

 brown, 3-septated, thus Pseudovalsa-l'ike. The brown spores (1- as well 

 as 3-septated) germinated in many cases; the hyaline ones however were 

 constantly found without germinative hyphe, and we therefore placed 

 some of these in a moist room in order to follow their development. 

 The result was a slowly advancing brown-colouring; germination did 

 not occur. 



Hence it must be considered as ascertained, that the fungus in 

 question is a genuine Pseudovalsa, but that the brown-colouring of the 

 spores appears at a very late stage of their development 1 ). 



Probably the germination only occurs after this colouring, which 

 thus signifies the ripening of the spores. 



The species here referred to was collected about new year upon 

 Alnus glutinosa (accompanied by Ditopella fusispora De Not. and Crypto- 

 spora suffusa Tul.) at Marselisborg, Aarhus. Specimens of the fungus 

 from the neigbourhood of Sorø (collected about 3 months later) showed 

 a few apparently accidentally brown spores interspersed among numerous 

 hyaline ones. 



Helotium herbarum (Pers.) Fr. 



On examining some (dry) specimens of Helotium herbarum (upon 

 Urtica dioica-siems from Frederiksdal, Sjælland) the discus of the fungus 

 appeared sprinkled with a light powder. Under the microscope this 

 appeared to be a layer of elliptic-cylindrical, yeast-cell-like conidia of 

 varying size, among which were seen the ascus-spores of the fungus. It 

 could be directly ascertained that the conidia in question really were 

 formed by fructificative germination of the spores, as we in several in- 



a ) The excellent judge of danish Pyrenomycetes, P. Larsen of Aarhus, like- 

 wise states to have found brown spores several times. 



