A PARASITIC BOTRYTIS ON PEPPER AND LETTUCE. 69 
Fuckeliana De Bary. It is a degenerate form, having lost 
the apothecial stage entirely, the life cycle being completed 
when the sclerotia germinate by the production of tufts of 
conidiophores. 
2. In all cases Sclerotinia Fuckeliana has no connection 
whatsoever with Sclerotinia Libertiana Fuckel. 
3. Two stages in the parasitism of the fungus have been 
noted: first, the killing of the cells in advance of the fungus, 
due to some organic acid (not oxalic) or to some toxin (not 
destroyed by boiling) secreted by the fungus; second, the 
digestion of the dead tissues by a number of enzymes which 
are produced in varying quantities by the fungus. 
BIBLIOGRAPHY. 
1. Atkinson, G. F. Carnation diseases. American Flor- 
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2. Bailey, L. H. Lettuce. Bull. Cornell Exp. Sta. 
96: 307-314. 1895. 
3. Beauverie, J. Etudes sur le polymorphisme des 
champignons influence du milieu. Ann. Univ. 
Lyon N. 8. 3:—. 1900. 
4. Beauverie, J. and Guilliermond, A. Etude sur la struc- 
ture du Botrytis cinerea. Centralbl. f. Bakt. IT. 
10: 275-281. 1903. 
5. Behrens, J. Ueber das Auftreten des Hankkrebses in 
Elsass. Zeitschr. f. Pflanzenkrankh. 1: 208-215. 
1891. 
6. —— Botrytis Douglasii. Zeitschr. f. Pflanzenkrankh. 
5: 136-141. 1895. 
Blytt, A. Disease of Potatoes. Nature 28: 367. 1883. 
8. Brefeld, O. Untersuchungen, die Faulniss der Friichte 
betreffend. Bot. Zeit. 34: 281-287. 1876. 
9. —— Untersuchungen aus dem Gesammtgebiete der 
Mykologie 10:315. 1891. 
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