434 FXJNGUS-FLOIiA. 



Macrosporium cheiranthi. Fr. 



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

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

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

 the hyphae. 



Macrosporium cheirantM, Fries, Syst. Myc, iii. p. 374 j 

 Sacc, Syll., iv. n. 2505. 



On fading leaves and fruit of species of GheirantJms and 

 Drdba. 



Macrosporium convallariae. Fr. 



Spots rather silky, indeterminate, olivaceous, easily re- 

 m.ovable 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 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, 

 pale brown, 40 x 15 //,. 



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



On fading fronds of Scolopendrium vulgare. 



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



Conidiophores simple or sparingly branched, rathe !• short 

 and rigid, septate, typically brown; conidia elliptical, 

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

 aorogenous, subsolitary. 



Mystrosporium, Corda, loon. 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 



