BLASTOCLADIALES 689 



through an apical pore; resting spore broadly ovoid and beaked, base 

 narrow and truncate, 25-45 [l long by 16-26 [i wide, wall thin, colorless, 

 possibly pitted on inner face, germination not observed. 



Forming small whitish pustules. On apple fruits, Lund (be. cit.), 

 Denmark; rose fruits, Crooks (1937: 227, text fig. 1 1 D-G, pi. 10, fig. 5), 

 Australia. 



The resting spores found by Crooks resemble in shape those of Blas- 

 tocladia rostrata, but if these were actually mature specimens the wall is 

 much like that of the resting structures of B. ramosa. 



Cejp (1947) has separated the Australian fungus from Blastocladia 

 angusta as B. crooksae but, fortunately, has not validated this segrega- 

 tion. If the fungus is distinct from Lund's species, then it was misiden- 

 tified by Crooks and is a new species requiring a diagnosis. 



Blastocladia incrassata Indoh 



Science Rep. Tokyo Bunrika Daigaku, Sect. B, 4: 252, text fig. 10. 1940 



(Fig. 47 F, p. 682) 



"Fungus-colony small, white, in compact tufts ; basal body cylindrical, 

 rather broad at upper end, closely branched in dichotomous or racemose 

 manner, at lower end attached by scanty rhizoids. Whole fungus 200- 

 500 \l high, 1 5-50 \l diam. at base. Cell wall smooth, hyaline, thin, about 

 2 {x thick. Plasm granulous with oil drops. 



"Zoosporangia terminal on branches, sessile, single, racemosely or 

 cymosely arranged, cylindrical to broad clavate, 18-28 X 50-88 \x, with 

 truncate base, having apically a single dehiscence papilla about 3 u, high. 



"Chlamydocyst not observed" (Indoh, be. cit.). 



On submerged fruits of Cornus officinalis, Indoh (be. cit.), Japan; 

 Minden (1916: pi. 4, fig. 26), Germany; Sparrow (1936a: 455, pi. 20, 

 fig. 7), Great Britain. 



Erected to include certain forms described by Minden as Blastocladia 

 pringsheimii, the organism identified by Sparrow as B. ramosa, and the 

 Japanese fungus. Doubtfully distinct from B. gracilis. Waterhouse (1942) 

 has suggested that it is merely a variety of B. ramosa. 



