672 MEDICAL MYCOLOGY 



He divides the genus thus defined into four sections: (1) the whole mycelium breaking 

 up into arthrospores ; (2) new spores being cut off continuously from the tips of hyphae 

 eventually giving a basipetal chain; (3) the mycelium growing mostly by sprouting; (4) the 

 mycelium comparatively light colored, with chains of spores developed on partially differenti- 

 ated, short lateral conidiophores. 



Of the above sections, Torula should be retained for the first, 2 and 4 should be trans- 

 ferred to Dermatium, and 3 to Pullularia or perhaps to Eormiscium. 



HORMISCIUM 



This genus was characterized by Hoffman, Myk. Hefte 1: 12, 1817, as follows: Fibrae 

 aggregatae vel solitariae, simplices, stnctae, rigidiusculae, suppellucidae, articulatae ; articulis 

 globosis continms. His Fig. 7 on PL 1 shows single chains of spores rising from the sub- 

 stratum, with no traces of a conidiophore. He recognized only one species, K. expansum. 

 Ehrenberg, Sylvae Myc. p. 22, 1818, added H. alta, from bark of Alnus glutinosus. Both 

 these species were treated as a subgenus of Torula by Persoon, Myc. Eur. p. 22, 1822. Link, 



1 '^ z 



Fig. 106. — 1, Horniiscium stilbosporum Corda ; 2, Hormiscium pinophilum Nees. (After Corda.) 



in his revision of the fungi for WUldenow's edition of Ldnnfi's Species Plantarum, places them 

 in his Monilia which is apparently strictly a synonym of Rormiscium. He adds Dematium 

 antennaeforme Hoffman, under name Monilia (Torula) antennata Pers., M. sparsa which 

 may be the same as Dematviom articulatum Pers., and M. (Torula) Havimonis Ehrenberg in litt. 

 Saccardo, Syll. Fung., and Lindau, in Rabenhorst, Kryptog. Ft. Deutschl. I, 9: 596- 

 604, recognize the characters as expressed by Link for his Monilia (Fig. 106). Lindau recog- 

 nized the need for a revision of the species referred to Hormiscium and Torula but did not 

 carry it out. 



Key to Genera 



Mycelium early evanescent, leaving single black spores varying from spherical to ellipsoid or 



lenticular, never fusiform. Coniosporium. 



Mycelium persistent, frequently dark colored (white in Indiella). 

 Whole mycelium breaking up into arthrospores. 



Arthrospores short cylindric, chains not readily breaking up. Hormiscium. 



Arthrospores ellipsoid, chains readily breaking up. Torula. 



Arthrospores spherical to short ellipsoid, sprouting. Pullularia. 



