246 SECTION AMYLOHYGROCYBE 



phae without clamp connections. Thus, he proposes (1955, p. 370) a 

 new genus, Hygroaster. 



We are not at all convinced that the amount of divergence ob- 

 served on the hyphae of the hymenophoral trama is sufficient to place 

 this species in section Hygrophorus, a group characterized by diver- 

 gent gill trama hyphae. 



Notes on the type: Spores 7-10 X 6-8 n, ellipsoid, nodulose, nod- 

 ules 1-2 X 1-2 p, blunt. Basidia (40)50-62 X 9-12 /x, 2- and 4-spored. 

 Pleurocystidia and cheilocystidia none. Gill trama of somewhat woven 

 to subparallel hyphae of relatively short cells, tending to diverge to- 

 ward the hymenium. Lactifers present in the gill and pileus trama. 

 Cuticle of repent or semi-erect hyphae, which are septate, pale fuscous, 

 and 5-10 \x broad. Clamp connections none. 



SECTION AMYLOHYGROCYBE sec. nov. 



Sporis amyloideis; tramate hymenophorali subregulari. 



Species typica: H. metapodius Fr. 



Observations — This section is at a level with section Hygroaster 

 and Hygrotrama, i.e., based on a single character which is out of line 

 with the great majority of the species of Hygrophorus. The two species 

 included are more closely related to other species in Hygroci/be than to 

 each other, but this hardly invalidates the section as similar situations 

 occur throughout the classification of the Agaricales. 



Key to Species 



1. Pileus umbrinous; context reddish where injured; stipe 2-2.5 cm thick . . 



147. H. metapodius 



1. Pileus white; stipe 1.5 mm thick; context not changing 



148. H. translucens 



147 



Hygrophorus metapodius Fr. 



Epicr. Myc, p. 328. 1838 



Camarophyllus metapodius (Fr.) Wiinsche, Die Pilze, p. 115. 1877. 

 Hygrocybe metapodia (Fr.) Moser apud Gams, Die Rohrlinge, 

 Blatter- und Bauchpilze, p. 42. 1955. 



Illustrations: 



Bresadola, Icon. Myc, tab. 335. 

 Lange, Flora Agar. Dan., pi. 166G. 



Pileus 6-8 cm broad, convex to expanded, umbrinous, rufescent, 

 with fuscous squamules, becoming widely areolate-rimose, margin 



