720 AQUATIC PHYCOMYCETES 



(1955:555), United States; Petersen (1909:398, figs. 12-14; 1910: 

 534, figs. 12 14), Lund (1934: 39), Denmark; Apinis (1930: 236), 

 Latvia; Minden (1915: 578), Germany; Barnes and Melville (1932: 93, 

 fig. 6), Sparrow (1933b: 537; 1936a: 459, pi. 20, fig. 8), Great Britain; 

 Crooks (1937: 221, fig. 7a), Australia; Beverwijk (1948: 231, fig. 2), 

 Holland; Kobayasi and Ookubo (1952a: 103; 1954b: 570), Ookubo 

 (1954:55), Japan; Cejp (1947:46, pi. 2, fig. 2), Czechoslovakia; 

 fruits, Das-Gupta and John (1953: 168, figs. 6,7), apples, Lacy (1955: 



209), India. 



In general habit this species is more open and ramose than Gonapodya 

 prolifera and it usually grows under less foul environmental conditions. 

 Whether or not the difference in environment is responsible for the dis- 

 tinctions between the two fungi awaits further investigation. 



MONOBLEPHARELLA Sparrow 

 Allan Hancock Pacific Expeditions, Publ. Univ. So. Calif., 3(6): 103. 1940 



(Fig. 51, p. 710) 



Mycelium pearly gray in aggregate, the hyphae branched, delicate, 

 often catenulate, nonseptate, with very thin walls, contents disposed 

 in a reticulate, scalariform, or foamy manner; zoosporangia cylindrical 

 or somewhat siliquiform, cut off from the hyphae by cross walls, secon- 

 dary ones sympodially developed; zoospores fully formed within the 

 sporangium in one or several rows, with an anterior group of refractive 

 granules, escaping after dissolution of the tip of the sporangium; anther- 

 idia and oogonia when first formed usually associated in pairs, sperm 

 posteriorly uniflagellate with an anterior group of refractive granules, 

 oospheres nonflagellate, containing large refractive globules usually one 

 (rarely more than three), borne in an oogonium which lacks a con- 

 spicuous papilla; sperm not completely engulfed by the egg at ferti- 

 lization ; zygote at once emerging and swimming away by means of the 

 persistent flagellum of the sperm; oospore formed free in the water, 

 with a smooth, thickened wall, upon germination forming a mycelium. 



Saprophytic in soil or in fresh water; primarily tropical and sub- 

 tropical. 



