48 SECTION CAMAROPHYLLOPSIS 



color when fresh and in stature, but does not fade in the same manner. 

 H. lacmus Fr. of Europe also has a superficial resemblance to it, but 

 should be readily distinguished by the yellow base of its stipe and non- 

 amyloid spores. Amyloid spores have been found in two other species, 

 H. translucens (Murr.) Murr. and a specimen identified as H. meta- 

 podius ( Fr. ) Fr. from Denmark. In both, parallel to subparallel hyme- 

 nophoral trama has caused us to consider them as a separate section. 



Subgenus Hygrophorus 



Key to Sections 



1. Hymenophoral trama of intricately interwoven to moderately inter- 

 woven hyphae; epicutis of pileus not hymenif orm ( but some species 

 with a trichodermial epicutis ) . . . Section Camarophyllopsis, below 



1. Not as above 2 



2. Hymenophoral trama somewhat interwoven; epicutis of pileus 



an hymenif orm palisade of enlarged cells 



Section Hygrotrama, p. 96 



2. Not with above combination of characters 3 



3. Hymenophoral trama of hyphae divergent from a thin to distinct 

 central strand Section Hygrophorus, p. 248 



3. Hymenophoral trama parallel to slightly interwoven 4 



4. Spores nodulose Section Hygroaster, p. 245 



4. Spores smooth 5 



5. Spores non-amyloid Section Hygrocyhe, p. 107 



5. Spores amyloid Section Amylohygrocybe, p. 246 



SECTION CAMAROPHYLLOPSIS nom. nov. 



Camarophyllus (Fr.) Kummer. Fiihr. in Pilzk., p. 117. 1871. 



Spores not amyloid; hymenophoral trama interwoven; epicutis of 

 pileus not in the form of an hymeniform layer. 



Type species: Hygrophorus prat ensis (Fr.) Fr. 



Donk ( 1949 ) has pointed out that the generic or sectional name 

 Camarophyllus must be based on Agaricus camarophyllus as the type. 

 As he stated, this amounts to a designation of the type of the group 

 by the original author. Since it was found later that Agaricus camaro- 

 phyllus is actually a "Limacium" (Hygrophorus in the sense of the 

 type species of the genus) because of its divergent gill trama, the 



