1154 AQUATIC PH YCO M YCETES 



Sorokin, N. W. 1889. Materiaux por la flore cryptogamique de l'Asie Centrale. Rev. 

 Mycologique, 11:69-85, 136-151, 207-208. 1889; 12:3-16, 49-61. 1890; 

 pis. 76-111. (Includes almost exact duplication of the account of the chytrids 

 in the 1883 paper.) 



Sost, H. 1955. Uber die Determination des Generationswechsels von Allomyces 

 arbuscula (Butl.). (Polyploidieversuche.) Arch. Protistenk., 100: 541-564, 8 

 tigs., PI. 17. 



Sparrow, F. K., Jr. 1927. Occurrence of Pythium gracile in the United States. 

 Rhodora, 29:37-39. 



1929. A note on the occurrence of two rotifer-capturing Phycomycetes. 



Mycologia, 21:90-96, 1 fig. 



1931a. Observations on Pythium dictyosporum. Ibid., 23: 191-203, 1 fig., 



pi. 20. 



1931b. Two new species of Pythium parasitic in green algae. Ann. Bot. 



London, 45: 257-277, 2 figs., pi. 9. 



1931c. Two new chytridiaceous fungi from Cold Spring Harbor. Amer. 



J. Bot., 18:615-623, pi. 45. 



193 Id. A note on a new chytridiaceous fungus parasitic in Elodea. Occ. 



Papers Boston Soc. Nat. Hist., 8:9-10. 



- 1932a. Observations on the parasitic ability of certain species of Pythium. 

 Phytopathology, 22: 385-390. 



1932b. Observations on the aquatic fungi of Cold Spring Harbor. Mycol- 

 ogia, 24: 268-303, 4 figs., pis. 7-8. 



1933a. Observations on operculate chytridiaceous fungi collected in the 



vicinity of Ithaca, N. Y. Amer. J. Bot., 20: 63-77, 2 figs., pis. 2-3. 



1933b. The Monoblepharidales. Ann. Bot. London, 47: 517-542, 2 figs., 



pi. 20. 



1933c. Inoperculate chytridiaceous organisms collected in the vicinity of 



Ithaca, N. Y., with notes on other aquatic fungi. Mycologia, 25: 513-535, 

 1 fig., pi. 49. 



1933d. New chytridiaceous fungi. Trans. Brit. Mycol. Soc, 18:215-217. 



1934a. The occurrence of true sporangia in the Physoderma disease of corn. 



Science (N. S.), 79:563-564. 



1934b. Scherffeliomyces. Mycologia, 26: 377. 



- 1934c. Observations on marine Phycomycetes collected in Denmark. Dansk 

 Bot. Ark., 8 (6): 1-24, 4 pis. 



1935a. Recent contributions to our knowledge of the aquatic Phycomycetes. 



Biol. Rev. Cambridge Phil. Soc, 10: 152-186, 2 figs. 



- 1935b. The interrelationships of the Chytridiales. In Proc Zesde Interna- 

 tionaal Bot. Congres Amsterdam, Vol. 2. xiii + 317 pp. Leiden. 



- 1936a. A contribution to our knowledge of the aquatic Phycomycetes of 

 Great Britain. J. Linn. Soc. London (Bot.), 50:417^178, 7 figs., pis. 14-20. 



