66 



RESEARCHES ON FUNGI 



hypha, so that the fusion in question is not an end-to-side but, in 

 reality, an end-to-end one. 



Mile Bensaude, 1 in 1900, in her well-known paper on the sexual 

 process in Coprinus fimetarius (the C. lagopus of these volumes), by 

 studying the position of clamp-connexions in mature mycelia 



i 



L 



Fig. 41. — Coprinus fimetarius. 

 Diagrams showing stages 

 in the formation of an 

 anastomosing branch 

 between two parallel 

 hyphae. The clamp-con- 

 nexion formed near b 

 after the fusion belongs 

 morphologically to the 

 branch sent out from a. 

 Drawn and described by 

 Mile Bensaude. 



k 



■O- 



a b 



Fig. 42. — Coprinus 

 fimetarius. 

 Diagrams 

 showing stages 

 in the forma- 

 tion of an 

 anastomosing 

 branchbetween 

 two parallel 

 hyphae. The 

 clamp - con - 

 nexion formed 

 after the fusion 

 belongs mor- 

 phologically to 

 the little 

 branch sent 

 out by b. 

 Drawn and 

 described by 

 Mile Bensaude. 



exhibiting completed fusions, came to the conclusion that hyphal 

 fusions are formed in three ways which she illustrated with diagrams : 

 (1) end of one hypha to side of another hypha (Fig. 41) ; (2) end of 

 one longer hypha to end of a short hypha emitted from the side of 

 another hypha (Fig. 42) ; and (3) the end of one longer hypha to the 

 end of another longer hypha (Fig. 43). Her second and third types 

 of fusions correspond to my hypha-to-peg and hypha- to-hypha types 



1 Mathilde Bensaude, Recherches sur le cycle evolutif et la sexualite chez les 

 Basidiomycetes, Nemours, 1918, pp. 53-54. 



