168 



THE LOWER FUNGI—PHYCOMYCETES 



Fig. 61. — (a-f) AchJya spp. g. IsoaMya toruloides Kauffman and Coker. 

 (a-c) Oogonia and antheridia: diffonuit stages in delimitation of oospheres. 

 (d) Oogonium with only a single oospliere. (e) Sporangium freeing its spores 

 through an apical pore; the spores encysting there and later escaping from the 

 cyst walls as reniform, biciliate, naked swarmsjiores. (/) Mature sporangium 

 with spores already delimited, (g) A cluster of empty sporangia which devel- 

 oped in the cymose manner with an accompanying instance of proliferation. 

 {a~d, after Cornu 1872; e and /, after de Bary 1887; g, after Coker 1923.) 



