ZYGOMYCETES 341 



De Bary ('Comp. Morph.,' p. 156) treats the incompletely known 

 Dimargaris and Dispira, both of Van Tieghem,' as at present doubtful 

 Mucorini, probably near Piptocephalideae. Another small group of 

 genera of doubtful position is formed by Kickxella(Coem.), Martensella 



FIG. 296. P. Freseniana. M, a mycelial tube of Mucor Mncedo, the host of Pipto- 

 cephalis. The mycele of the latter, m, penetrates M by haustoria, h. Z, zygosperm. 

 c, sporophore (x 300, the rest x 630). (After Brefeld.) 



(Coem.), Coemansia (Van Tiegh. and Le Mon.); while Sorokin's Zygo- 

 chytrium, an aquatic saprophyte on dead insects, the account of which 

 needs confirmation, stands in a like uncertain position. 



LITERATURE. 



Bainier Observ. sur les Mucorinees et sur les zygospores des Mucorinees (Ann. Sc. 



Nat., 6 ser., Tom. xv., 1883). 



De Bary und Woronin Beitr. zur Morph. u. Physiol. der Pilze, i. and ii. 

 Brefeld Bot. Unters. tiber Schimmelpilze, i. and iv. 



