104 MINNESOTA BOTANICAL STUDIES. 



Subfamily 5. CEPHALIDEAE. 



Asexual reproduction by means of conidia formed in chains 

 on the swollen ends of simple or branched conidiophores. 



15. PIPTOCEPHAHS De Bary. Abhandl. Senckenb. 



Naturf. Ges. 5: 356. 1865. (ex. Fischer.) 



Parasitic on other Mucoraceae; conidiophores dendroid, sev- 

 eral times dichotomously branched, with age septate and with 

 a brown cuticularized membrane; branches terminating in a 

 round swelling separated by a septum (basidial cell) which 

 bears chains of conidia, usually in large numbers, and falls off 

 with them. 



No species reported for North America. 



16. SYNCEPHALIS Van Tieghem and Le Monier. Ann. 



Sc. Nat. V. 1 7 : 372, 1873. 



Parasitic on other Mucoraceae or saprophytic; conidiophores 

 simple or once divided, without septa, attached to substratum 

 by a tuft of short, thick, forked rhizoids, terminating in a 

 round or clavate head; the lowest conidium (basidial conidium) 

 with one or more, usually two, protuberances each bearing a 

 chain of conidia. 



The basidial conidium falls off with the chains, leaving small 

 warty processes on the head of the sporangiophore. 



No species reported from North America. 



18. SYNCEPHALASTRUM Schroeter. Krypt. Flor. v. 

 Schles. III. 1 : 217. 1886. 



Saprophytic; conidiophores without rhizoids at the base, 

 branched, swollen at the ends; conidia chains in one row. 

 No species reported from North America. 



