DEMATIEAE. 353 



Subsect. 2. Macronemeae. Sacc. 

 Hyphae evident and distinct from the conidia. 



Tribe 4. Periconieae. Sacc. 

 Conidia brown, capitate, not catenulate. 



Tribe 5. Arthrineae. Sacc. 



Conidia brown, not catenulate, produced in whorls along 

 the hyphae. 



Tribe 6. Trichosporieae. Sacc. 



Conidia brown, not catenulate, produced vaguely in a 

 scattered matter. 



Tribe 7. Monotosporeae. Sacc. 



Conidia brown, not catenulate, borne singly at the tips of 

 erect hyphae or conidiophores. 



Tribe 8. Haplographieae. Sacc. 

 Conidia brown, catenulate. 



Conidia colourless or almost so, borne by short specialised 

 conidiophores situated at the base of the long, sterile, erect, 

 brown hyphae. 



Tribe 9. Myxotricheae. Sacc. 



Conidia aggregated to form a head ; (at first enclosed in 

 a vesicle ?). 



Conidia colourless or nearly so ; hyphae brown, not 



differentiated into fertile and sterile, i.e. all alike in 

 structure. 



VOL. in. 2 A 



