Pomona College Journal op Economic Botany. 



335 



SUMMARY 



1. The carnation Fusarium differs in cultural and morphological char- 

 acters from Fusarium oxysporum. 



a. It does not form microconidia, its chlamydospores are more 

 deeply colored, and twice as large as those of F. oxysporum . 



b. It is a more vigorous grower than F. oxysporum and in cul- 

 tures a distinct yellow color appeared which did not appear in cultures 

 of F. oxysporum 



2. This fungus is capable of invading a carnation plant through a 

 wound and causing disease. 



3. This fungus is not likely to cause injury to a sound plant through 

 soil infection. 



4. It is evident that the infected plant dies as a result of the invasion 

 of the fungus, but not from having its water ducts clogged by the mycelium. 



5. The disease of carnation stem-rot or wilt is widely distributed in 

 this vicinity but not serious. 



6. The disease may be adequately controlled by the application of 

 the proper cultural methods. 



a. Use only cuttings from healthy plants. 



b. Change the soil in which the plants are grown each year. 



c. Guard against extreme heat and moisture conditions. 



d. Be careful not to injure the plant when transplanting it. 



BIBLIOGRAPHY 



Britton, W. E. : American Florist, Vol. 14 (1898); No. 545, pp. 431-432. 

 Britton, W. E. : Gardening, Vol. 7 (1899), No. 153, p. 138. 

 Card, F. W. and Adams, G. E., Rhode Island Report: 



1899, p. 131-135— Extract E. S. R., Vol. 12, p. 763; 



1900, p. 249-251— Extract E. S. R., Vol. 12. p. 966; 



1901, p. 233-234^Extract E. S. R., Vol. 13, p. 763. 

 Scribners, Vol. 19, p. 313. 



Current Literature, Vol. 29, p. 214. 

 Current Literature, Vol. 37, p. 478. 



Stone, G. E., and Smith, R. E. : Mass. Reports for 1901, pp. 66-69. 



Extract E. S. R., Vol. 14, p. 157. 

 Sturgis, W. C: Conn. State Station Report (1897), pp. 175-181. 



Extract E. S. R., Vol. X, p. 262. 

 Stewart, F. C. : Botanical Gazette. No. 27 (1899), No. 2, pp. 129-130. 



Same E. S. R., Vol. X, pp. 1054-1055. 

 Duggar, B. M., Text: Fungous Diseases of Plants, p. 321. 

 Atkinson, Geo. F. : American Florist, 8; pp. 720-728 (1893). 

 Mangin, L. : Comptes Rendus, Academy Science, Paris, Vol. 121 (1900), 

 pp. 1244-1246. 



Extract E. S. R., Vol. 13, p. 154. 



