686 AQUATIC PHYCOMYCETES 



in 265 individuals that there was wide variation in this respect, the 

 structures ranging from 70 to 270 \x in length and from 15 to 75 ix in 

 diameter; sporangia 100-210 \x in length by 25-55 [jl in diameter were 

 in the majority, whereas those 150-159.9 by 30-39.9 \i occurred with the 

 greatest frequency. 



Blastocladia aspergilloides Crooks 

 Proc. Roy. Soc. Victoria (N. S.), 49(2): 228, text fig. lie, pi. 10, figs. 1, 4. 1937 



"Plant attached to substratum by means of a few fairly stout rhizoids 

 — up to 5 [jl in diameter; plant consists of a single cell, cylindrical in the 

 lower part 25-45 jjl in diameter, but expanded at the apex to form a 

 swollen head — 60-85 jjl in diameter; branched forms were not observed; 

 plants 140-200 \i high, dark in color due to dark brown protoplasm, 

 wall of basal cell fairly thick, 3.5-5 [jl; sterile hairs usually present, only 

 1-2 [jl in diameter; sporangia long, narrow, cylindrical, arising from the 

 swollen head, 85-150 x 8-15 jjl. Zoospores emerge through a terminal 

 opening; resting spores not observed" (Crooks, loc. cit.). 



On rose hips, apples, Australia. 



This is only very doubtfully distinct from Blastocladia pringsheimii; it 

 has been seen many times by the author. Generally regarded as a dwarf 

 form of that species, it has in one unusual instance (Sparrow, 1932b: pi. 

 7, fig. H) been figured attached to a typical plant of B. pringsheimii. 



Blastocladia sparrowii Indoh 



Science Rep. Tokyo Bunrika Daigaku, Sect. B, 4: 259. 1940 



(Fig. 46 C, p. 680) 



"Basal body cylindrical, 13-31 X 312-468 [x; distal portion of basal 

 body greatly swollen, lobed, or more often, unlobed, 47-374 \i in diam., 

 bearing sessile sporangia and sterile setae. Sterile setae branched or 

 unbranched, up to 260 jx long. 



"Zoosporangia cylindrical, 13-21 x 73-143 \i. Internal proliferation 

 of the sporangia frequent and very evident. Zoospores spherical, 5.2 y. 

 diam., posteriorly uniciliate. 



"Chlamydocyst not observed" (Indoh, loc. cit., modified from Spar- 

 row, 1936a: 458, pi. 20, figs. 3, 13). 



