296 



THE BASIDIOMYCETES 



by spores of the fungus, apparently never by means of the fungal 

 hvphae. Haustoria of the fungus penetrate the bodies of the in- 

 sects and develop practically entirely within their circulatory 



Fig. 115. A. Habit sketch of Septobasidhnn pseiidopedicellatum occurring 

 on Fraxinus sp., showing pillars arising from subiculum and heavy outer 

 cover. B. Section through hymenial layer. Stages of germination, show- 

 ing probasidia, basidia and paraphyses. Basidiospores are being shed from 

 one mature basidium. C. Variation in basidia. D. Variation in basidio- 

 spores. (Courtesy of J. N. Couch.) 



systems. The insects apparently suffer little harm as the result 

 of parasitism; they live as long as non-parasitized individuals and 

 are free to move about, although they do not reproduce. During 



