434 FUNGUS-FLORA. 



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

 Sacc., Syll., iv. n. 2505. 



On fading leaves and fruit of species of CTieiranihus and 

 Draba. 



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. 



Macrosporium convallariae, Fries, Syst. Myc., iii. p. 373 ; 

 Sacc., Syll., iv. n. 2574. 



On fading leaves of Convallaria multiflora. 



Macrosporium seolopendri. 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, 

 pale brown, 40 x 15 /A. 



Macrosporium seolopendri, Cke., Grev., xvi. p. 81. 



On fading fronds of Scolopendrium vulgar e. 



MYSTROSPOKIUM. 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 Macrosporium, 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 



