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SCLEROTINIA FRUCTIGENA. 



J. B. S. Norton. 



The fungus known as Monilia fructigeMi has been long 

 known as the cause of a serious disease of fruits, especially 

 in this country, and has been the subject of study by many 

 investigators both from the economic and })urely scientific 

 standpoint. Among the many Experiment Station bulletins 

 dealing with this fruit rot, may be mentioned those of Ches- 

 ter* and Quaintance.f Dr. Erwin F. Smith:}: has done the 

 most valuable work on the fungus in this country. Humphrey§ 

 has also contributed a good paper on the life history of 

 Monilia. Among the host of European works, the excellent 

 and beautifully illustrated paper by Woroninlf is the most 

 complete. Montemartini's || paper in the Rivista di Patologia 

 may be referred to for a more complete bibliography. 



Although the ascospore stage of this funo-us has not been 

 reported by any writer, the species, from the morphology of 

 its condia, the sclerotia formed and other peculiarities of life 

 and structure, has been without question referred to the genus 

 Sclerotinia, first by Schroeter, and later with more thorough 

 work to uphold his views by Woronin, who after patient 

 search for the apothecial stage published his paper on this 

 subject with the view that either the apothecia had been lost 

 from this species and also the similar Sderotinia cinerea, or 

 that the period of their development from the sclerotia was 

 very long. 



* F. D. Chester^ Delaware College Agricultural Experiment Station Bul- 

 letins 19. 1892; 29. 1895. 



t A. L. Qaaintance, Georgia Experiment Station Bulletin 50. 1900. 



+ Erwin F. Smith, Journal of Mycology 5:123-134. 1889; 7:26-38. pi. 

 5-6. 



I J. E. Humphrey, Botanical Gazette 18 : 85. 1893. 



Tf M. Woronin, Meraoires de I'Acaclemie irap6riale des sciences de St.- 

 Pelersbourg. VIII. 105:1-38. pi. 1-6. 1900. 



II L. Montemartini, Rivista di Patologia Vegetale 8:210-218. 1900. 



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