COPRINUS LAGOPUS 



191 



There is no doubt that my C. lagopus is the C. lagopus of Brefeld's 

 Untersuchungen . ^ 



Fig. 107. — Coprinus lagoptis, a heterothal- 

 lic Hymenomycete. A pure culture 

 on a horse-dung ball ; from a sowing 

 of spores obtained at Birmingham, 

 England. The culture was kept in 

 the dark and brought into the light 

 four days before the photograph was 

 taken. The fruit-bodies are normal 

 in appearance, except for their basal 

 pseudorhiza which was developed 

 while the culture was in the dark. 

 The pilei are black owing to the 

 ripening of the spores on the gills, 

 and they well display their white 

 fibrous scales which are characteristic 

 for the species. Natural size. 



Fig. 108. — Coprinus lagopus, a heterothal- 

 lic Hymenomycete. A pure culture 

 on a horse -dung ball ; from a sowing 

 of spores obtained at Birmingham, 

 England. The culture was kept en- 

 tirely in the dark. The stipes have 

 tapering woolly bases, and the pilei, 

 relatively to their width, are longer 

 than pilei grown in the light. The 

 stipes are elongating. The pileus of 

 the fruit-body on the left is black 

 with ripening spores and is about to 



expand. Natural size. 



Mile Bensaude,^ in 1917 and 1918, pubhshed her classical papers 

 on the cytology and sexual processes of a fungus which she called 



1 Cf. these Researches, vol. iii, 1924, pp. 299-327, Figs. 130-147, and 0. Brefeld, 

 Untersuchungen iiber Pil.e, Leipzig, Heft III, 1877, pp. 98-108, Taf. VI, Figs. 1-7, 

 and Taf. VII, Figs. 1-5. 



2 Mathilde Bensaude, " Sur la Scxualite chez les Champignons Basidiomycetes," 

 Comptes rendus des Seances de V Academic des Sciences, T. CLXV, 1917, pp. 286-289 ; 

 also Recherches sur le cycle evolutif et la sexualite chez les Basidiomyc^es, Nemours, 

 1918, pp. 1-156. 



