56 



RESEARCHES ON FUNGI 



both of which had turned toward it and with one of which it had 

 fused (Fig. 30, E). 



The monosporous mycelia of Pleurage anserina, as they grow 



Fig. 30. — Pleurage anserina. Various hyphal fusions. A and B : two 

 stages in a peg-to-peg fusion. C : one peg and two opposing pegs : 

 the single peg is growing toward one only of the opposing pegs but 

 both of the pair of pegs are growing toward the single peg. D : one 

 peg has fused with both of two opposing pegs. E : a hypha-to-peg 

 fusion in which the hypha a caused the hypha b to send out two 

 opposing pegs instead of the usual one ; the hypha a has fused with 

 one of the pegs and possibly with the other. F : a hyphal fusion in 

 a fruit-body primordium ; apparently a loop-hypha a has fused with 

 a peg c produced by the hypha b. Magnification, 487. 



older, develop primordia of fruit-bodies. Hyphal fusions were 

 observed in all the primordia which were examined. One of these 



Fig. 31. — Pleurage anserina. Fusions found associated with 

 three pegs. A : the hypha o sent out the peg a, and the 

 hypha p the two pegs b and c ; fusion took place between 

 a and b, and then c ceased to develop further. B : the 

 hypha o sent out the peg a, and the hypha p the three pegs 

 b, c and d ; fusion took place between the pegs a, b, and c, 

 apparently at their ends. The peg d grew no further. 

 Magnification, 868. 



fusions — probably a hypha-to-peg fusion — resulting in the formation 

 of a loop is shown in Fig. 30, F. 



