236 DISEASES OF FIELD & GARDEN CROPS. [CH. 



frequent in the inflorescences of flowering plants. The 

 growth is comparable with an umbel lengthening into a 

 raceme or corymb. Such abnormal growths are especially 

 common in wallflowers (Oheiranthus) and candytuft (Iberis). 

 A single conceptacle is shown, enlarged 200 diameters, 

 at Fig. 110, for comparison with 

 the normal conceptacle illustrated 

 to the same scale at Fig. 102. 

 There is a little difference in the 

 form, but virtually the two 

 growths are the same in both 

 fungi. Tulasne has illustrated 

 the normal form of G. purpurea, 

 Tul., precisely like our Fig. 110. 

 The conceptacle is packed with 

 asci or bladders containing 

 sporidia. 



A single ascus removed from a 

 conceptacle, with its contained 

 sporidia, is illustrated at Fig. Ill, 

 A, enlarged 500 diameters; and 

 a single sporidium, enlarged to 

 1000 diameters, at B, for com- 

 parison with the same parts en- 

 graved to the same scale from the 

 FIG. no. Conceptacle of normal growth in Fig. 103. A 



x ' 200 



no. Conceptacl 



larged 200 diameters. 



noted; but this ascus and 

 sporidium were taken from the 

 largest and most mature conceptacle we could find 

 others were not half the size. Average specimens are 

 exactly the same in size and form in both fungi. 



The ergots from which the variety Wilsoni grew were 

 from the bottom and shady side of a half-dry Aberdeenshire 

 ditch. In this position they were found naturally covered 

 with decaying grass. To us the ergots appeared much less 

 firm than the ergots from rye, and in some instances they 



