HYP HOC HYT MALES 161 



On Mougeotia sp., Germany. 



Fisch says all the zoospores from the sporangia fused and that the 

 unconjugated ones never formed new sporangia, as they do in Reessia 

 (p. 764). If this is so then only zoospores from germinated resting 

 spores can form new sporangia (gametangia). It should be noted that 

 the zoospores are anteriorly uniflagellate, a point not mentioned by 

 Fischer and Minden, who, on the basis of Zopf's observations on 

 Rhizophydium pollinis-pini, doubt their conjugation. The lack of figures 

 greatly weakens Fisch's account. He does not state whether an epibiotic 

 or endobiotic sporangium is formed at the germination of the resting 

 spore. 



The fungus is not referred to by Karling (1943) in his synopsis of 

 anteriorly uniflagellate fungi. If it is rediscovered and the observations 

 of Fisch confirmed it should be placed, on the basis of the flagellation 

 of the zoospores, operculum, and the apparent lack of true sporangia, 

 in a new genus. 



A form mentioned by Cornu( 1872a: 121) as "near Chyt. acuminatum" 

 which has an operculate sporangium and an endobiotic spherical 

 smooth-walled resting spore with a single globule, and which is parasitic 

 on zygospores of Mougeotia scalaris, France, has been referred tentative- 

 ly to this species by Fischer and Minden, apparently on the basis of 

 the similarity of hosts. 



