ii6 RESEARCHES ON FUNGI 



mottled and therefore differ from those of the Panaeolus Sub-type. 

 If there is any mottling present, it cannot be definitely observed 

 with the naked eye and only somewhat vaguely with the microscope. 



(4) On any small area of the hymenium the basidia here and 

 there are associated into little strings or groups of like, or almost 

 like, age ; so that one can recognise an arrangement of the basidia 

 which, when the spores are pigmented, results in what may be called 

 incipient mottling. Owing to this arrangement, the fungi of the 

 Inocybe Sub-type appear to be closely connected with those of the 

 Panaeolus Sub-type. 



(5) The basidia are monomorphic, i.e. equally protuberant. In 

 this respect the Inocybe Sub-type agrees with the Panaeolus, the 

 Bolbitius and the Armillaria Sub-types, but differs from the Psathy- 

 rella Sub-type as well as from all the Coprinus Sub- types. 



(6) There is no lateral crowding of the basidia with overlap of 

 spores such as is found in the Psathyrella Sub-type and all the 

 Coprinus Sub-types, but adjacent basidia bearing spores are set 

 rather closely together. The hymenium is therefore somewhat 

 compact as regards the spore-bearing basidia, and in this respect 

 it agrees rather with the Panaeolus than with the Armillaria Sub- 

 type. 



(7) The paraphyses are like those of the Panaeolus and the 

 Armillaria Sub-types, i.e. are small and not joined laterally into a 

 definite hymenial pavement such as we find in the Psathyrella and 

 the Bolbitius Sub- types. 



The intermediate position of the Inocybe Sub-type in respect 

 to the Panaeolus and the Armillaria Sub-types will have been suffici- 

 ently elucidated by the above remarks. I can easily conceive that 

 one investigator might consider a particular fungus as belonging to 

 the Inocybe Sub-type, while another might consider it as belonging 

 to the Panaeolus Sub-type. It is difficult to draw an exact line 

 clearly separating these two Sub-types. Similarly, it might happen 

 that one investigator would place a particular fungus in the Armil- 

 laria Sub-type, and another in the Inocybe Sub-type. When there 

 is uncertainty, it would be best to place the doubtful fungus in the 

 Inocybe Sub-type, for this has been established to include inter- 

 mediate forms. 



