LAGENIDIALES 975 



430), Closterium sp., Cejp (1932a: 5, pi. 1, figs. 11-13, pi. 2, fig. 5) 

 (Czechoslovakia), Closterium sp., Pleurotaenium trabecula, Mougeotia 

 robusta, Rieth (1954: 172, fig. 7), Germany; various algae, Cornu 

 (1869a: 222), host (?), de Wildeman (1896b: 46), Spirogyra sp., Arnaud 

 (1952: 182, fig. 1 D), France; Spirogyra sp., coll. Marchal, de Wildeman 

 (1893b: 53, pi. 6, figs. 1 1-12), Spirogyra sp., Zygnema sp., de Wildeman 

 (1895a: 76, pi. 2, figs. 10-12), Belgium; host (?), coll. Massart, de 

 Wildeman (he. cit.), Norway; Mougeotia sp., Spirogyra sp., Scherffel 

 (1902b: 109), Mougeotia sp., S. mirabilis, Domjan (1936: 51, pi. 1, figs. 

 95, 107, 125, 160-164), Spirogyra sp., Berczi (1940:87), Hungary; 

 Mougeotia sp., H. E. Petersen (1909:402; 1910: 537, fig. 16e), Denmark; 

 Closterium acerosum, Closterium sp., Cosmarium didymochondrum, Cos- 

 marium sp., Spirogyra maxima, Spirogyra sp., Voronichin (1920: 11), 

 Russia; Spirogyra sp., Skvortzow (1927: 206, fig. 10), China; Closter- 

 ium angustatum, W. G. Farlow (F. 586), Cladophora kuetzingiana, 

 Zygnema cruciatum, Graff (1928: 168), Mougeotia sp., (?) Closterium 

 acerosum, Sparrow (1932b: 288, fig. 4 a-c), Mougeotia sp., Spirogyra 

 sp., Sparrow (1933c: 532), Spirogyra sp., Thompson (1934: 118, fig. 1 

 a-d), Spirogyra crassa. Wolf (1944: 14), Closterium sp., Sparrow and 

 Barr (1955: 556), United States; Spirogyra sp., Valkanov (1931a: 365), 

 Bulgaria; Spirogyra affinis, Chaudhuri (1931:472, figs. 1-7), Spi- 

 rogyra affinis, Mundkur (1938), Spirogyra sp., Das-Gupta and John 

 (1953: 169, figs. 13-15), Lacy (1955:209), India; Spirogyra jiirgensii, 

 Spirogyra sp., Cladophora sp., Tokunaga (1934a: 228, fig. 2), Japan; 

 Spirogyra sp., Sparrow (1952c: 105), Cuba. 



Although Constantineanu (1901 : 377, figs. 78-79) reported Myzocyt- 

 ium proliferum from Rumania in Cladophora and Spirogyra, from his 

 figures (all except 78b and 79a) of the sporangia and the one-globuled 

 nature of the emerged zoospores, he probably had a mixture of Ach- 

 lyogeton and Myzocytium. 



A fungus termed Myzocytium proliferum by Martin (1927: 188) is 

 unusual in that the discharge tube is expanded just beneath the host 

 wall. A Myzocytium in Closterium costatum in the Farlow Herbarium 

 (No. 642) likewise shows a similar enlargement. Canter (1947a) believes 

 this swelling indicates relationship to M. megastomum and places 

 Martin's fungus there. Forms occurring in desmids (see M. megastomum, 



