CHYTRIDIALES 557 



light to dark brown, with one large globule and a parietal layer of 

 smaller ones; germination unknown" (Berdan, loc. cit.). 



Saprophytic in leaves of wheat, corn, rye, oats, and various grasses, 

 Berdan {loc. cit.; 1941b), United States, Canada; vegetable debris, 

 Karling (1941a: 387; 1941b: 108; 1942c: 620; 1948c: 509), United 

 States. 



Catenochytridium carolinianum Berdan f. marinum 

 Kobayasi and Ookubo 



Bull. Nat. Sci. Mus. (Tokyo), 33: 57, fig. 4. 1953 



"Zoosporangium extramatrical, hyaline, spherical, ovoid oi kidney- 

 shaped, 40-60 u, high, 15-36 \i in diameter, somewhat thick-walled 

 (1 .5-2 [x in thickness) with two or more papillae; orifice circular, 5-10 u. 

 in diameter. Apophyses composed of two or three linear series; each 

 series composed of catenulate 2-6 segments; basal segment ovoid or 

 oblong, other segments ovoid, fusoid or irregularly elongate, termi- 

 nally attenuated. Rhizoids originated from apical and intermediate 

 segments of apophyses, simple or dichotomously branched, not so 

 long, length of rhizoidal system (including apophyses) 40-60 \x. Zoo- 

 spores not observed" (Kobayasi and Ookubo, loc. cit.). 



On Cladophora japonica (marine), Japan. 



Differing from the type in being marine and parasitic on an alga. 

 A further study of this form will no doubt show it to be a distinct 

 species. 



Catenochytridium kevorkianii Sparrow 



Rev. Soc. Cubana Bot., 9: 70, figs. A-E. 1952 



Sporangium predominantly citriform at maturity, 40-43 u. high by 

 35-36 \x in diameter, with a smooth colorless or faintly amber-colored 

 wall, a basal, thick-walled, dark amber-colored protrusion, 5-8 u, in 

 diameter, and an apical hyaline papilla about 12 \x in diameter; primary 

 apophysate cell irregularly pyramidal, 12-21 \x in greatest width, its 

 broadest face usually adjacent to the base of the sporangium; catenulate 

 rhizoidal segments thin-walled, variable in size and number, arising 



