1080 



AQUATIC PHYCOMYCETES 



?M. minimus 



M. ovalis var. giganteus 

 ?M. wheldenii 



Myzocytium proliferum 



Olpidium zygnemicola 



Phlyctidium tenue 



Phlyctochytrium lagenaria 



P. magnum 



P. unispinum 



?Rhizophydium barkerianum 

 ?R. digitatum 



Zygorhizidium willei 



Zygogonium sp. 



Micromyces fischerii 



M. zygogonii 

 •'Conjugatae" 



Micromyces zygogonii 



DESMIDS (PLACODERM AND SACCODERM) 1 



Arthrodesmus sp. 



?Bicricium naso 



Rhizophydium difficile 

 Closterium acerosum 



Ancylistes closterii 



Myzocytium megastomum 



M. proliferum 

 C. angustatum 



Myzocytium proliferum 

 C. areolatum 



Ancylistes berdanii 



Myzocytium megastomum 

 C. attenuatum 



Myzocytium megastomum 

 C. costatum 



Micromyces mirabilis 



Olpidium utriculiforme 



Phlyctochytrium mucronatum 

 C. delpontii 



Ancylistes closterii 

 C. dianeae 



Micromyces mirabilis 



Olpidium utriculiforme 

 ( '. didymotocum 



Myzocytium proliferum 

 C . ehrenbergii 



Ancylistes closterii 



Lagenidium intermedium 

 ?Phlyctochytrium desmidiacearum 



C. k ut zing ii 



Micromyces mirabilis 



C. lanceolatum 

 Ancylistes closterii 



C. lunula 



Ancylistes closterii 

 Micromyces mirabilis 

 Olpidium endogenum 

 O. utriculiforme 

 Rhizophydium globosum 



C. pritchardianum 



Phlyctochytrium mucronatum 



C. ralfsii var. hybridum 

 ?Lagenidium sacculoides 

 Olpidium endogenum 



C. rostratum 

 Chytriomyces closterii 

 Lagenidium closterii 



C. setiferum 



Lagenidium closterii 



C. striolatum 

 Ancylistes closterii 

 Lagenidium closterii 



Closterium sp. 



Ancylistes berdanii 



A. closterii 



Chytridium gibbosum 



C. schenkii 



Lagenidium closterii 



Micromyces mirabilis 



Myzocytium megastomum 



M. proliferum 



Olpidium endogenum 



O. entophytum 

 ?0. rostratum 



Phlyctochytrium closterii 



Rhizophydium globosum 

 ?R. septocarpoides 



R. verrucosum 



Cosmariuin botrytis 

 Olpidium saccatum 

 O. utriculiforme 



1 An important group of the Zygnematales, hence, placed as a separate head. 



