I 



AGRICULTURAL EXPERIMENT STATION. 



93 



Fig. 1. A— Diseased ceclar twig. B— Normal twig. C— Germinating spore. 



At a distance this disease gives the appearance of birds' nests in 

 the boughs. It is believed to be perennial. 



The Boestelia makes its appearance upon the young fruit and 

 twigs of quince trees and other rosaceous plants early in the sum- 

 mer. It first sends its threads through the host producing orange 

 spots in which pimples appear. From the top of these pimples 

 short shining white horns (Peridia) are developed which are 

 coarsely toothed at the top and contain the bright orange spores. 



