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(Hygrocybe acutoconica) (Clem.) Singer                                

 

DSC_5104 H. acutoconica.JPG

©Per Fadnes

 

 

Hygrocybe acutoconica normally has a cap with a distinct acute umbo. The stem is clearly fibrillose of the same color as the cap often with a white basis.

 

H. acutoconica belongs to the subgenus Hygrocybe. This group is characterized by regular tramacells, which means the cells in the gills have a size of 200-1000 µm or more. The spores are also particulary large - up to 14 µm. These are important microscopically features.

 

Characteristics:

Cap

Gills

Stipe

Similar species

Up to 50mm, normally conical as young, later applanate often with an acute umbo and irregulary lobed.

Vicid surface on young specimens later dry.

Yellow to orange

Normally free, pale, weakly yeallow to pale orange.

Spores long, some slightly constricted

11-14µm.

Up to 80mm, dry, clearly fibrillose.

H. chlorophana with acute cap but it han not fibrillose stem.  H. intermedia but it has a clarly squamulose cap.

H. conica, but it gets quickly black

 

Ecology/Indicatorvalue:

H. acutoconica most often grows on calcareous sites, often in sandy areas. It is not very common and is only found in a few locations in SW-Norway. It has a relatively hidg indicatorvalue and grows on localities together with other rare grasslandfungi.

 

Fructification in Norway: From end of June to medio November, mainly in August/September.

 

Redlistcategory: Not listedt

  

 

Distributionmap

 

 

References:

David Boertmann.2010, The genus Hygrocybe, 2nd revised edition. Fungi of

Northern Europe vol. 1 Svampetryk, Danmark.