

I 







1 920] WILSON— CROWN-GA LL 65 



5. The small zoospores, the large zoospores, and the united 

 zoospores (zygotes ?) become amoeboid after a period of motility. 



6. In the amoeboid state, singly or in groups, these bodies may 

 be observed upon the surface of the host. 



7. In infected soil young alfalfa seedlings develop galls in which 

 Plasmodia are found. 



8. In older galls similar plasmodia are found, which ramify 

 through the tissues of the gall. 



9. The resting spores are formed in cavities within the tissues 

 of the galls. 



10. The cytoplasmic and nuclear contents of the resting spores 

 in the dormant condition correspond to those of the Plasmodium 

 in the stage immediately preceding the formation of resting spores. 



University of Cincinnati 



Cincinnati, Ohio 



LITERATURE CITED 



spores 



909 



Jahrb 



1. Atkinson, G. F., Intelligence manifested by swarm 

 dium globosum. Bot. Gaz. 19:503-504. 1894. 



2. , Some fungous parasites of algae. Bot. Ga2 



3. Bally, W., Cytologische Studien an Chytridineen. 

 50:95-153. 1911. 



4. Barrett, J. T., Development and sexuality of some species of Olpidiop- 

 sis. Ann. Botany 26:209-238. 1912. 



5. Busgen, M., Beitrag zur Kenntnis der Cladochytrieen. Cohn's Bei- 



Pflanzen 



j 



Memoirs Dept. Agric, India, Botanical Series 1:1-160. 1907. 



7 



egniees. Ann. Sci. Nat. 



Bot. V 15:112-198. 1872. 



8. Dangeard, P. A., Recherches sur les organismes inferieurs. Ann. Sci. 



Xat. Bot. VII 4:241-341. 1886. 



9. , Memoire sur les parasites du noyau et du protoplasm. Le Bo- 



taniste 4:199-231. 1894-1895. 



10. Delacroix, G., and Maublanc, A., Maladies des plantes cultivees. 



II. Maladies parasitaires, p. 78. Paris. 1909. 



11. Duggar. B. M., Fungous diseases of plants, p. 140. 1909. 



12. Engler, A., and 



Leipzig. 1897. 



13. Eriksson, J., Fun{ 



lation, p. 30. 191 2. 



Pflanzenfamilien 



Molanders trans- 



