CHYTRIDIALES 113 



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Dublin Soc, 5: 453-464, pi. 4-5, 1908. 



Further observations on powdery potato scab, Spongospora sul)- 



terranea. Sci. Proc. Roy. Dublin Soc, 12: 1G5, 1909. 

 Jones, F. R. and Chas. Dhechsler, Crownwart of alfalfa caused l)y Uro- 



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 Jones, P. M., Structure and cultural history of a niycetozoan found in 



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 , Morphology and cultural history of Plasmodiophora brassicae. 



Archiv Protistenk., 62 : 313-327, pi. 15-21, 1928. 

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American Characeae. ' Amer. Jour. Bot., 15: 204-214, Jig. 1, 2, pi. 14, 



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Wart of potatoes: a disease new to the United States. U. S. 



Dept. Agric. Cotton Truck & Field Crops Div. Circtdar 6: 3-14, 1919. 

 IvusANO, S., On the nucleus of Synchytrium Puerariae Miyabc. Botan. 



Mag., 21: 118-121, 1907. 

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 , A contribution to the cytology of Synchytrium and its hosts. Bui. 



Coll. Agr. Tokyo, 8: 79-147, pi. 8-10, 1909. 



On the life history and cytology of a new Olpidium with special 



reference to the copulation of motile isogametos. Jour. Coll. Agr. 



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 Lagerheim, G. de, Remarks on the fungus of a potato scab. Jour. Mycol 



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Brassicae to its host and the structure and growth of its Plasmodium. 



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