MIMICRY. 



34 1 



there is an imitator in a small fungus with white 

 spores, found in just the same localities, with the 

 identical fishy odour. According to all authority 

 and experience the difference in the colour of the 

 spores is not a mere difference of species, but indicates 

 quite a separate and distinct group of species. 



We might also indicate as further removed from 

 each other such species as Agaricus {tricholomd) nudus, 

 a handsome violet species, which when well grown is 

 scarce to be distinguished from Cortinarius violaceus, 

 except that in the former the spores are white, and in 

 the latter rusty. 



Taking a still wider range we encounter equally 

 startling resemblances between widely separated 

 groups, such as the whole hypogoeous Gasteromycetes, 

 which in form, size, odour, habit, and all save fructi- 

 fication imitate the truffles (Tuberacece). Or, opposing 

 certain genera we have in Podaxon a resemblance to 

 Coprinus, and Hypolyssus might be mistaken for an 

 immature Crucibulum. The larger species of Peziza 

 sometimes approach in habit Craterellus. And in 

 Cyphella, with its naked spores, every feature besides 

 corresponds with the small Pezizce, some being like 

 the section Hymenoscypha, others that of Dasyscypha, 

 and others Motlisia. 



Comparing fungi with other cryptogamia, the gela- 

 tinous species of Tremella are just like such algse as 

 Nostock In lichens the species of Lecidea approximate 



