CHYTRIDIALES 365 



On encysted Euglena sp., Nowakowski (he. cit.), Germany (?); 

 Euglena viridis Serbinow (he. cit.), Russia. 



There is little question but that this organism was first described and 

 figured by Nowakowski. He did not appear to recognize that the 

 sporangium always arose as a lateral outgrowth of a prosporangium, 

 nor did he observe the often apophysate and strongly digitate character 

 of the endobiotic part. His Figures 1 10-112 of the sporangial stage and 

 Figure 1 14 of the resting stage are, however, strikingly similar to those 

 of Serbinow and leave little doubt as to the identity of the organisms. 



SCHERFFELIOMYCES Sparrow 



Mycologia, 26: 377. 1934; J. Linn. Soc. London (Bot.), 50: 446. 1936 



(Fig. 21 M-O, p. 360) 



Scherffelia Sparrow, Trans. Brit. Mycol. Soc, 18: 216. 1933. Non Scherf- 

 felia Pascher, Hedwigia, 52: 281. 1912. 



Thallus extramatrical, epibiotic, and endobiotic, monocentric, eucar- 

 pic, consisting of the extramatrical persistent cyst of the zoospore, the 

 proximal part of the germ tube, the epibiotic expanded rudiment 

 of the sporangium, and the endobiotic vegetative system; sporangium 

 inoperculate, zoospores uniflagellate, with a single globule; resting 

 spore thick-walled, borne like the sporangium, contents with globules, 

 germination not observed. 



Parasites of fresh-water green algae. 



The genus appears closely allied to Phlyctidium and Rhizophydium, 

 but differs in its peculiar method of development, first noted by Zopf 

 (1884). Corallioehytrium 1 has the same type of development, but, unlike 

 Scherffeliomyces, forms angular multiporous sporangia, a thick-walled 

 apophysis, and a stubby branched haustorial system. 



KEY TO THE SPECIES OF SCHERFFELIOMYCES 2 



Sporangium spherical or subspherical ; globule of zoospore orange 



S. par as i tans, p. 366 



Sporangium pyriform; globule of zoospore colorless 



S. appendiculatus, p. 366 



1 See remarks under Corallioehytrium, p. 368. 



2 See also Scherffeliomyces leptorrhizus Johns, p. 367. 



