434 FUNGUS-FLOKA, 



Macrospormm cheiranthi. Fr. 



Hyphae erect, simple, pellucid, somewhat nodulose, sep- 

 tate ; conidia very abundant, large, piriform, ovato-clavate, 

 muriformly septate, blackish-olive, about twice as thick as 

 the hyphae. 



Macrosporium clieiranthi, Fries, Syst. Myc, iii. p. 374; 

 Sacc, Syll., iv. n. 2505. 



On fading leaves and fruit of species of CJieiranthus and 

 Draha. 



Macrosporium convallariae. Fr. 



Spots rather silky, indeterminate, olivaceous, easily re- 

 movable and soon disappearing ; hyphae erect, fugacious ; 

 conidia obovate, blackish-olive, paler and narrowed at the 

 base, muriformly septate ; pedicel short, hyaline. 



Macros'porium convallariae. Fries, Syst. Myc, iii. p, 373 ; 

 Sacc, Syll., iv. n. 2574. 



On fading leaves of Convallaria midtijlora, 



Macrosporium scolopendri. Cke. 



Spots brown, orbicular or irregular ; tufts small, scattered 

 over the spots, olive ; threads short, seldom branched, sep- 

 tate, slender ; conidia 3-4-septate, with 1-2 transverse septa, 

 23ale brown, 40 X 15 /x. 



3Iacrospor{um scolopendri, Cke., Grev., xvi. p. 81. 



On fading fronds of Scolopendrium vulgare. 



MYSTEOSPOEIUM. Corda. (fig. 29, p. 397.) 



Conidiophores simple or sparingly branched, rather short 

 and rigid, septate, typically brown; conidia elliptical, 

 subglobose, or oblong, many-septate, muriform, blackish, 

 acrogenous, subsolitary. 



Mystrosporium, Corda, Icon. Fung., i. p. 12. 



Allied to Macrosi:iorium, but distinguished by the more 

 rigid and darker-coloured hyphae and conidia. 



Mystrosporium stemphylium. Corda. (fig. 29, 

 p. 397.) 



Tufts thin, broadly effused, blackish ; conidiophores short, 

 flexuous, erect, olive-brown ; conidia obovate, variable in 



