39-2 Cooke: Genera and Speei'es in Fiinof. 



Then again, there is the species called by Fries Pleurotus 

 decorus, but which has recently been placed in Tricholoma, as 

 more fitting, but which is neither a good Pleurotus nor a good 

 Tricholoma, but which is a good link between the two. 



Lepiota lenticularis is again so abnormal a species of Lepiota 

 that some authors have ventured to transfer it to Amanita, 

 where it is equally out of place, and it appears to me that it 

 is one of the links between Lepiota and Amanita, of which I 

 recognize two or three others. 



Schidzena is simply Lepiota without a ring, as Amanitopsis 

 is Amanita without a ring, and but little imagination is necessary 

 to discover connecting links between the ringed and ringless 

 forms. 



If we leap to Mycena we shall have no great difficulty in 

 discovering links with Colly bia such as Collyhia psathyroides, 

 which again suggests a barren Psathyra, but beyond this we 

 have links between Collyhia and Marasmiits, which are indis- 

 putable. Doubtless the original Collyhia cohcerens is better 

 placed in Marasmiits, but, are not one or two others, if not 

 veritable species of Mavasmius, at least strong hnks between 

 the two genera, such as Coll. stipitaria. 



Then again, such genera as Amanitopsis, Schulzeria, and 

 Pilosace, which only differ irom Amanita, Lepiota, and Psalliota 

 by the absence of a ring, and are virtually ' links ' rather than 

 genera in themselves. 



We cannot fail to observe that Psalliota cretacea (Fries) 

 is not by any means a good species, but such as has been termed 

 an ' abnormal ' species, and has been attributed to Lepiota, to 

 which it is probably the link between that genus and Psalliota. 



Nor can we forget that several species of smooth spored 

 Lnocyhe are scarce distinguishable from Cortinarius. There are 

 one or two species of Psathyrella which are manifestly links with 

 Coprimis. 



The old species Clitocyhe gigantea (Sow) is now generally 

 recognized as Paxillus giganteus, although it is by no means a 

 good species of Paxillus, and, to my mind, it is doubtful whether 

 it should be regarded as Paxillus dit all, but as a ' link ' between 

 Clitocyhe and Paxillus. 



{To he continued). 



Naturalist 



