HYPHOMYCETES. 271 



never agglutinated together in a definitely fasciculate 

 manner. 



Mucedineae, Link, Berl. Mag., iii. p. 10 ; emended by Sac- 

 cardo, in Mich., ii. p. 13 ; Sacc., Syll., vol. iv. p. 2. 



The leading characters of the present family consist in 

 the white or bright colour of the hyphae and conidia ; the 

 hypliae are comparatively flaccid and soon collapsing, 

 forming dense cottony or downy tufts, but never agglu- 

 tinated together to form compound stem-like structures. 



Sect. I. Amerosporae. Sacc. 



Conidia continuous ( = l-celled, hence not septate), hyaline 

 or brightly coloured, subglobose or shortly cylindrical, not 

 elongated. 



Subsect. l. Micronemeae. Sacc. 



Hyphae very short, scarcely to be distinguished from the 

 conidia. 



Tribe 1. Chromosporieae. Sacc. 

 Conidia not concatenate. 



Tribe 2. Oosporeae. Sacc. 

 Conidia catenulate. 



Subsect. 2. Macronemeae. Sacc. 

 Hyphae elongated, distinct from the conidia. 



Tribe 3. CepJialosporieae. Sacc. 

 Conidia produced in a head or cluster, not catenulate. 



Tribe 4. Aspergilleae. Sacc. 

 Conidia capitate and catenulate. 



