DISEASES OF SEEDLINGS 259 



DISEASES OF SEEDLINGS 



The seedlings of all classes of plants are especially 

 susceptible to the attacks of fungi, which destroy great 

 numbers in Nature's garden and become especially 

 destructive in seed-beds. 



Phytoplitlwra omnivora, De Bary, is one of the 



FIG. 85. Tree showing improper method of removing a branch. 

 (Photo by J. J. Tanbenhaus.) 



most widely distributed organisms, and is known to be 

 very destructive to seedlings. It has been reported on 

 Acer, Alonsoa, Abies, Aralia, Cleome, Clarkia, 

 Cereus, Epilobium, Fagopyrum, Fagus, Gilia, Larix, 

 Lepidium, Melocactus, Oenothera, Picea, Pinus, 

 Solanum, Sempervivum, Salpiglossis, etc. 



