DISEASES AJSD OTHEK ENEMIES. 301 



ZYMOTIC OB FUNGUS DISEASES AND OTHEK 

 ENEMIES. 



By reason of the large supply of plant-food stored 

 in bulbs and tubers, the resulting plants are able to 

 make a very rapid growth, and, consequently, rarely 

 suffer from attacks of fungi or insects. Hence bulbs 

 and tuberous-rooted plants seldom require applications 

 of either dry or liquid fungicides, or insecticides. Con- 

 cerning the destructive fungi, Dr. Byron D. Halsted, of 

 the New Jersey Experiment Station, writes in the Amer- 

 ican Agriculturist as follows : 



The Lilies, which may, by right, take the lead 

 among bulbous ornamental plants, have several leaf 

 blights, among which are Sphcerella cinxia, Sacc., Phyl- 

 losticta liliicola, Sacc., Cylindrosporium inconspicuum, 

 Wint., and Cercosporella liliicola (R), Sacc. But it is 

 among the rusts that we have more conspicuous and 

 sometimes destructive species of fungi. Thus, upon 

 Lilies there maybe Uromyces erythroni (D. C.), Pass., 

 with a wide range of hosts, from the Crown Imperial to 

 the plebeian Onion; Uromyces lilii, Clint., is a species 

 found first on leaves of Lilium candidum, at Buffalo, 

 N. Y., and might be called the American Lily Bust, to 

 distinguish it from some of the others. Two species of 

 cluster cup fungi are recorded from the Lilies, one jfficid- 

 ium Safianoffarum, Thum., on the Martag;on Lily, in 

 Siberia, and ^cidium convallarice, Schm., which flour- 

 ishes upon a wide list of the Liliaceous groups of plants. 

 AVhile this is by no means the full list of the fungi 

 attacking the Lilies, it suffices to show that there are 

 many enemies, possibly the worst of which is to be men- 

 tioned later. 



The Hyacinth, in like manner, has several destruc- 

 tive fungi, among which are Dictyuchus monosporus, 



