718 AQ VATIC PHYCOMYCETES 



posteriorly uniflagellate, ovoid, often reverting to the amoeboid con- 

 dition, 20-25 by 1 1-1 5 (j., encysting to form a smooth-walled, spherical 

 resting spore surrounded by a hyaline envelope, germination not observ- 

 ed. (Adapted in part from Johns and Benjamin, 1954.) 



On decaying fruits and twigs of various types in water. Cornu (loc. 

 cit.), twigs, Barbier (1950: 35, figs. 13-20), France; Reinsch (loc. at.), 

 Minden (1915: 577, fig. 12a; 1916: pi. 6, fig. 56), Laibach (1927: 599, 

 fig. 11), Germany; Thaxter (F.) (loc. cit.), Kanouse (1927: 304), Spar- 

 row (S.) (1932b: 291, pi. 7 A; 1933b: 535, pi. 20, figs. 30, 32; 1933c: 530), 

 apples, etc., Sparrow (1943:473), Beneke (1948: 30), oak twigs, Ben- 

 jamin (in Johns and Benjamin, 1954:201), twigs, Sparrow and Barr 

 (1955:555), United States; Petersen (1909:397; 1910:533, fig. 11), 

 Lund (1934: 39), Denmark; Valkanov (1931a: 366), Bulgaria; Apinis 

 (1930: 236), Latvia; Barnes and Melville (1932: 93), Sparrow (1933b: 

 535; 1936a: 459, pi. 20, fig. 1), tomato, Waterhouse (1942: 320), Great 

 Britain, Crooks (1937:220, fig. 7 b-d), Australia; twigs of Pyrus 

 pashia, Shen and Siang (1948: 190), China; Kobayasi and Ookubo 

 (1952a: 104; 1954b: 570), Ookubo (1954: 55), Japan; Cejp (1946: 10; 

 1947: 47, pi. 2, figs. 3-4), Czechoslovakia; fruits, Das-Gupta and 

 John (1953: 168, fig. 5), Lacy (1955: 209), India. 



This is actually the first monoblepharid described by Cornu (1871) 

 and is a rather common and variable species, generally forming small 

 white pustules on rosaceous fruits under very foul environmental con- 

 ditions. Variations in the shape of the sporangium are extensive 

 and may approach those typical of Gonapodya polymorpha. 



Cornu (1877b) reported that in his fungus the oval colorless oospores 

 were borne in oogonia similar in shape to zoosporangia and derived 

 from an oosphere fertilized by a sperm. He gave no further information 

 or figures. 



Cejp's (1946; 1947:48, pi. 2, fig. 14) fungus termed Gonapodya 

 bohemica is a common form of G. prolifera. To make separate species 

 of the many growth forms encountered would result in confusion. 



Of the two species of the genus, this is the most readily recogniz- 

 able. In some collections, however, intergrades between the two 

 occur. 



