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 Piptocephalidese. Another small group of 

 genera of doubtful position is formed by Kickxella (Coem.), Marte'nsella 



Fig. 296. — P. Freseniana. M, a mycelial tube of Mucor Mucedo, the host of Pipto- 

 cephalis. The mycele of the latter, w;, 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 s^r., Tom. xv., 1883). 

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

 Brefeld — Bot. Unters. iiber Schimmelpiize, i. and iv. 



