MONOBLEPH ARID ALES 715 



KEY TO THE FAMILIES OF THE MONOBLEPH ARI DALES 



Zygote undergoing a period of motility before encystment, propelled by 

 the flagellum of the male gamete; mycelium with or without pseu- 

 dosepta ; female gametangium with one or more gametes ; oospores 

 smooth-walled Gonapodyaceae, p. 7 1 5 



Zygote remaining endogenous or merely oozing to the mouth of the 

 oogonium where it encysts, the male gamete completely engulfed; 

 mycelium without pseudosepta; female gametangium usually with 

 only one gamete; oospores mostly bullate 



MONOBLEPHARIDACEAE, p. 726 



GONAPODYACEAE 1 



Mycelium with or without pseudosepta and catenulations; zoo- 

 sporangia elongate or ovoid; gametangia with or without internal 

 proliferation, the female gametangium forming one or more female 

 gametes, at fertilization the male gamete only partially engulfed by 

 the female, its flagellum propelling the female away from the oogonium ; 

 oospore at maturity lying free in the water. 



Saprophytic on fruits and twigs in water or on organic material in 

 tropical and subtropical soils. 



KEY TO THE GENERA OF THE GONAPODYACEAE 



Mycelium with constrictions and pseudosepta, sporangia podlike or 

 ovoid, gametangia internally proliferous, female gametangium 

 bearing more than one gamete Gonapodya, p. 715 



Mycelium lacking constrictions and pseudosepta, sporangia narrowly 

 elongate, gametangia not proliferous, female gametangium typi- 

 cally bearing one gamete Monoblepharella, p. 720 



GONAPODYA Fischer 



Rabenhorst. Kryptogamen-FL, 1(4): 382. 1892 

 (Figs. 52, p. 712; 54 B-D, F, p. 738) 



Mycelium irregularly or dichotomously branched, varying in extent 

 of development, frequently profuse, method of attachment to the sub- 

 stratum probably by rhizoids, composed of cylindrical, often moniliform 

 hyphal segments delimited by hyaline constricted pseudosepta, hyphae 



1 The family has been suggested from time to time, most recently by Cejp (1957). 



