Classijicatiofi, 137 



zoogonidia being at first surrounded by a delicate 

 membrane. 



Biplanes saprolegnioides , Lietg. (figs. 91 — 93.) 



Mycelium aseptate, slightly branched ; oogonia 

 terminal on the branchlets, perforated, 35-40 yu, 

 diameter, containing many spherical oospores ; anthe- 

 ridia irregularly clavate, terminating lateral branches 

 originating near the oogonia ; zoosporangia terminal, 

 cylindrical, furnished with one or two papillae that 

 become perforated for the escape of the subreniform, 

 biciliate zoogonidia. 



Biplanes saprolegnioides, Lietg. in Pringsheim^s 

 Jahrb. Bd. vii- p. 374, tab. xxiv. ; Sacc. Syll. vii. 

 n. 939. 



Achlya intermedia, Bail. Krank. Insect, durch Pilze, 

 t. ii. f, 29. 



In putrefying insects in water. Rare. 



Achlya, Nees. 

 Dioecious or monoecious ; oogonia smooth or 

 strongly echinulate, polysporous, rarely unisporous ; 

 antheridia terminal on simple or divided branchlets 

 usually springing from the hypha just below the 

 oogonia in monoecious species ; zoosporangia cylin- 

 drico-clavate, terminal, containing numerous zoo- 

 S'onidia arrano-ed without order in a crowded manner, 

 the zoogonidia are enclosed in a thin pellicle after 

 liberation from the zoosporangia, and usually form a 

 compact hollow sphere at the moment of escape from 

 the zoosporangia, from which they eventually escape 

 in the naked form. Habit of Saprolegnia. 



