SCLEROTIUM COFFEICOLA 



453 



gave rise to three large sclerotia. The appearance of the plate one 

 month after inoculation is shown in Fig. 231. This experiment 

 and others make it evident that the sclerotia of S. coffeicola are 

 readily formed in artificial cultures. 



Since clamp-connexions are present in the mycelial strands which 

 grow out from the sclerotia, it seems very probable that Sclerotium 



Fig. 231. — Sclerotium coffeicola growing on 2-5 per cent, malt-agar in a Petri 

 dish. A montli after inoculation with mycelium. The "mycelium has 

 spread over the plate and has formed three sclerotia. The thickest 

 mycelial cords lead to the sclerotia. Natural size. 



coffeicola belongs to the Basidiomycetes and, in particular, to the 

 Hymenomycetes. In the Hymenomycetes sclerotia are known in 

 Typhula and other Clavariaceae, Hypochnus, Coprinus, Collybia, 

 Lentinus, and Polyporus. Stahel is inclined to regard Sclerotium 

 coffeicola as most like a Typhula. In this genus not only are sclerotia 



