348 AQUATIC PHYCOMYCETES 



zoospores emerging singly, 6 ;jl in diameter, with two small anterior 

 globules and a 25 \i long flagellum; apophysis broadly turnip-shaped 

 when growing in pollen, narrow and more elongate on agar, the rhizoids 

 strongly developed, branched, arising from the base of the apophysis; 

 resting spore spherical, 20-30 \x in diameter, with a smooth, thick wall 

 bearing discharge papillae, upon germination functioning directly as a 

 sporangium. 



Pine-pollen bait, cultivated on agar, seashore, Germany (Baltic, 

 North Sea), various places along Mediterranean. 



Phlyctochytrium spectabile Uebelmesser 

 Arch. f. Mikrobiol., 25: 315, fig. 4. 1956 



Sporangium spherical, 60-100 [jl in diameter, with fifteen to twenty- 

 five small hourglass-shaped papillae; rhizoidal system consisting of a 

 subsporangial apophysis and extensive, branched, delicate rhizoids; 

 zoospores spherical, 6 [i in diameter, with a lateral globule and flagellum 

 60 [i long; resting spore spherical, 60-100 lx in diameter, contents 

 bearing a large eccentric oil globule, smooth-walled, with a strongly 

 developed rhizoidal system arising from an apophysis, germination not 

 observed. 



Pine-pollen bait, soil (Utah) United States. 



Phlyctochytrium stipitatum Kobayasi and Ookubo 

 Nagaoa, 4:60, fig. 48. 1954 



Sporangia exobiotic, stipitate, globose or depressed-globose, 45-55 [x 

 in diameter, with a thin, smooth wall and apical or subapical papilla; 

 exobiotic stipitate portion of apophysis columnar, 25-40 [i. long by 10 

 [i. wide, thick-walled, hyaline; zoospores about 20, subglobose or ovoid, 

 20 x 23 jx, hyaline, with a single refractive globule and posterior flagel- 

 lum; rhizoids oriented from the base, di- or trichotomously branched, 

 elongate, with abruptly attenuated apices; resting spores not observed. 



On submerged grass stems, Japan. 



This chytrid, as its authors suggest, should doubtless be placed in a 

 new genus. 



