CHYTRIDIALES 225 



(1393) when Phlyctochytrium was segregated from Rhizophydium, al- 

 though from its haustorium it may belong in that genus. 



Couch (1932:252) has identified a fungus on Bumilleria with this 

 species (see Rhizophydium sp., p. 311). 



? Phlyctidium sp. Serbinow 



Scripta. Bot. Horti Univ. Imper. Petro., 24: 158, pi. 4, fig. 37. 1907 



Rhizophydium serbinovii Jaczewski, Opredelitel gribov. ... I. Fikomit- 

 sety, p. 38. 1931. 



Sporangium at first spherical, then ovoid, with a simple unbranched 

 expanded rounded haustorium, which penetrates only to the second 

 membrane of the "Gloeocystis" stage. 



In "Gloeocystis" stage of Euglena, Russia. 



? Phlyctidium sp. Sparrow 

 Mycologia, 25: 518, pi. 49, fig. 12. 1933 



Sporangium spherical, about 15 [i in diameter, the wall covered by 

 a series of tenuous, radiating hairs; haustorium a stout (40 \x long by 

 8 u, in diameter) somewhat irregular unbranched filament slightly 

 swollen at the point of contact with the inner wall of the substratum; 

 other characters unknown. 



On C/adophora, United States. 



SEPTOSPERMA Whiffen 



Mycologia, 34: 552. 1942 

 (Fig. 19, L-M, p. 318) 



"Thallus extramatrical, eucarpic. Zoosporangia, arising by enlarge- 

 ment of zoospore, spherical, ovoid, or ellipsoid, each sporangium with 

 a single exit pore. Zoospores uniguttulate and posteriorly uniciliate. 

 Resting bodies elongated, ellipsoid to clavate, divided by cross wall 

 into an empty proximal portion and a distal portion containing pro- 

 toplasm and one or more oil globules. Zoosporangia and resting bodies 

 attached to host by bulbous, discoid, or slightly branched haustorium" 

 (Whiffen, he. cit.). 



The genus differs from Phlyctidium only in the septate nature of 



