CHYTRIDIALES 377 



Entophlyctis vaucheriae (Fisch) Fischer 



Rabenhorst. Kryptogamen-Fl., 1 (4): 117. 1892 



(Fig. 22 C, p. 371) 



Rhizidium vaucheriae Fisch, Sitzungsber. Phys.-Med. Soc. Erlangen, 16: 

 55, pi. 1, figs. 10-23. 1884. 



Sporangium spherical, with a beaklike or narrowly cylindrical apical 

 discharge tube more or less prolonged extramatrically, wall smooth, 

 colorless, thin or slightly thickened; rhizoids arising basally from a 

 delicate central axis or occasionally from two places on the lower part 

 of the body, delicate, fairly extensive, and much branched; zoospores 

 relatively few, a large amount of contents usually remaining in the 

 sporangium after their formation, spherical, with a centric or eccentric 

 colorless globule and a short ftagellum, discharge not described; resting 

 spore endobiotic, thick-walled, the outer wall brown, the inner lustrous, 

 contents finely granular, vacuolate, with a more or less large oil globule, 

 germinating in the spring by the swelling of the endospore, which bursts 

 the exospore, the former emerging as a subspherical structure within 

 which are produced zoospores. 



In Voucher ia sessilis, Spirogyra sp., Fisch (be. cit.), Germany; 

 alga (?), Petersen (1910: 545), Denmark; Sparrow (1943: 257), United 

 States. 



Doubtfully distinct from Entophlyctis confervae-glomeratae . In certain 

 of Fisch's figures the fungus appears polycentric, as in Cladochytrium. 

 This is probably an error in observation due to several plants being 

 superimposed. Rhizidium spirogyrae was the name given by Fisch to 

 what was probably the same fungus growing in Spirogyra. No descrip- 

 tion accompanied his name. 



Entophlyctis confervae-glomeratae (Cienkowski) Sparrow 

 Aquatic Phycomycetes, p. 258. 1943 

 (Fig. 22 D, p. 371) 

 Rhizidium confervae-glomeratae Cienkowski, Bot. Zeitung, 13:233, pi. 



5 A, figs. 1-6 (not fig. 6c). 1857. 

 Rhizidium cienkowskianum Zopf, Nova Acta Acad. Leop. -Carol., 47: 196, 



pi. 17, figs. 14-24; pi. 18, figs. 1-4. 1884. 

 Entophlyctis cienkowskiana (Zopf) Fischer, Rabenhorst. Kryptogamen-Fl., 

 1 (4): 118. 1892. 



