KEYS TO THE MORE IMPORTANT GENERA OF FUNGI IMPERFECTI 615 



Conidia borne along the upper or the lower side of lateral, somewhat 

 curved, several-celled branches. Martensella and Coemansia 



(Mucorales) 

 Branching of the conidiophores verticillate. 



Conidia in chains. Spicaria 



Conidia not in chains. 



Conidiophores verticillately branched, more often in threes and twos; 

 conidia hyahne or light-colored, globose or oval, soon falling off. 

 Ultimate branches straight, conidia mostly terminal. 



Verticillium 

 Ultimate branches subulate, zigzag toward the tip, bearing a conidium 

 at each angle, this portion with the adhering conidia resembling 

 the rachis of a head of wheat with attached spikelets. 



Tritirachium 



(Limber, 1940) 

 Like Verticillium, but the conidia cylindric. 



A crocylindrium 



Key to the More Important Genera of the Hyalodidymous Moniliaceae 



Conidia not produced in chains. 

 Conidia smooth. 



Conidiophores unbranched; conidia oval or pyriform, the upper cell often 

 larger than the basal cell; hyaline or bright-colored; mostly saprophytes. 

 Conidium single, at the apex of the conidiophore. 



Trichothecium 

 Conidia forming a head at the apex of the conidiophore. 



Cephalotheci'um 

 Conidia clustered on somewhat enlarged, intercalary swellings on the 

 conidiophore. Arthrobotrys 



Conidiophores always branched; mostly saprophytes. 



Conidiophores verticillately branched; growing saprophytically on fungi. 



Diplocladium 

 Branching of conidiophores irregular, conidia single at the branch tips. 



Diplosporium 

 Conidiophores mostly unbranched, parasitic on leaves. 

 Conidiophores straight. Didymaria 



Conidiophores spirally curved. Bostrichonema 



Conidia warty, parasitic on fleshy fungi. Upper cell of conidium larger than the 

 lower one. Mycogone 



Conidia in chains. 



Conidiophore branches verticillate. On decaying fungi. 



Didtjniocladitim 



Key to the More Important Genera of the Phragmosporous Moniliaceae 



Conidiophores not much developed; conidia borne singly, curved, fusoid; para- 

 sites. Fusoma 

 Conidiophores well developed. 



Conidiophores unbranched; not parasitic on vascular plants. 

 Conidia single on conidiophores. Dactylella 



Conidia several in a head on the conidiophore. Dactylaria 

 Conidiophores unbranched, parasitic on vascular plants. 



