SUBSECTION CAMAR0PHYLL1 309 



and a critical comparison of the fresh material was made. The KOH 

 reaction separated the two at once. In //. paludosus the punctae over 

 the stipe apex stain lemon yellow at first, and slowly darken to orange, 

 whereas in H. paludosoides the change is instantaneous to orange. In 

 the latter, the gills have not been observed to stain olive, as in 

 H. paludosus, and the pilei of H. paludosoides are paler and grayer 

 when fresh than are those of H. paludosus. In H. paludosoides the 

 slime on the stipe becomes almost cinnabar in KOH. 



SUBSECTION CAMAROPHYLLI Sm. & Hes. 



Lloydia 2: 32. 1939. 



Gelatinous outer veil absent, fibrillose "inner" veil present or 

 absent; stipe dry. 



Type species: H. camarophyllus Fr. 



Key to Series 



1. Pileus white to whitish at first, or only the disc tinged with other colors 



and then only so at or past maturity Series Clitocyboides, below 



1. Pileus distinctly colored when young 2 



2. Stipe thick and soft, ornamentation at apex of scabrous points quickly 

 yellow in KOH, and diving reddish brown; pileus buff to salmon color 



Series Padorini, p. 332 



2. Stipe not with red-brown points as dried 3 



3. Lamellae soon spotted vinaceous or becoming vinaceous red over all. . . . 



Series Rubentes, p. 340 



3. Not staining as in above choice 4 



4. Pileus pink, vellow, brown, or rusty to vinaceous brown 



Series Fulventes, p. 353 



4. Pileus in grav to black or blackish brown 



Series Camarophylli, p. 379 



SERIES CLITOCYBOIDES ser. nov. 

 Pileus albidus; stipes siccus. 

 Type species: H. sordidus Pk. 



Key to Species 



1 . Spores typically 3 /x or less broad 2 



1. Spores 3.5-6 fx broad 3 



2. Stipe typically 1-2 cm thick, 3-5 cm long 187. H. subsordidus 



2. Stipe 5-8 cm long, 5-9 mm thick 188. H. diaphanes 



3. Stipe furnished with a fibrillose veil which sometimes leaves a fibrillose 

 zone 4 



3. Veil absent, examine un expanded specimens 6 



