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General information

 Substratum:Terricolous 
 
Continent::
Africa no
North America no
S. and C. America no
 
Asia no
Australia no
Europe yes
 
 Authority:(Bres.) Romagnesi ss. Blum 
 Synonyms and close species:C: R. torulosa 
 Information given by author(s):Piperinae sardoninae
Type : 52-221
 
 Host(s):Coniferous (picea excelsa) 
 Taxon name_Mycobank:
 
 Bibliography:
 

Macro-characters

 
Stipe
 Width of stipe:(10) 13 - 19 
 Veil:Absent 
 Form of base of stipe:Not radicate 
 Form of stipe:Inflated at top to straight 
 Context of stipe:Solid, spongy 
 
Main color(s) of stipe::
grey/black variable
brown variable
white no
yellow/cream variable
blue no
 
orange no
red/pink yes
purple/vinaceous yes
green variable
   
 
 Length of stipe:40 - 65 
 
Pileus
 Type of pileipellis:Smooth 
 Striations of pileus:Absent to weak or both 
 Form of center of pileus:Conc./plane/conv./umbil./umbo. 
 Separability of pileus:Nil to medium or both 
 
Thickness of flesh of pileus
 Thickness of flesh of pileus:Thick 
 
Main color(s) of pileus::
grey/black yes
brown no
white no
yellow/cream variable
blue no
 
orange no
red/pink no
purple/vinaceous yes
green no
   
 
 Diameter of pileus:(44) 60 - 80 
 
Lamellae
 Spacing of lamellae:Variable 
 Number of lamellulae:Variable or equal number 
 Furcation of lamellae:At the stipe/everywhere/absent 
 Color of ridges of lamellae:Fully concolorous with faces 
 Attachment of lamellae:Decurrent/adnate/free 
 Type of lamellae:Fragile/breakable 
 Type of lamellar ridges:Entire/smooth 
 
Main color(s) of lamellae::
grey/black no
brown no
white no
yellow/cream yes
blue no
 
orange no
red/pink no
purple/vinaceous no
green no
   
 
 Height of lamellae:(3.5) 6 - 8 
 Odor:Variable/weak and pleasant 
 Flavor of flesh:Bitter, acrid, pungent 
 
Color changes
 Fruit body turns green/blue with age:Not turning green/blue 
 Fruit body turns red if touched/cut:Not turning red 
 Fruit body turns black with age/touched:Not blackening 
 Fruit body turns grey with age:Entire fruit body 
 
Chemical reactions
 Ga´ac test on flesh:Variable/weak reaction 
 
Latex
 Latex:Absent 
 
Color(s) of fresh latex::
grey/black no
brown no
white no
yellow/cream no
blue no
 
orange no
red/pink no
purple/vinaceous no
green no
   
 
 
Color(s) of dry latex::
grey/black no
brown no
white no
yellow/cream no
blue no
 
orange no
red/pink no
purple/vinaceous no
green no
   
 

Micro-characters

 
Spores
 Length of spores:7.7 - 9 
 Width of spores:6.7 - 7.2 
 Amyloid plage:Present 
 Appearance of spores verrucae:Tips acute to rounded/both 
 Ornamentations in surface view:Irregular 
 Connection(s) between verrucae:Crest like/catenulate 
 Overall appearance of spores:Not to partly reticulate/both 
 Height of verrucae:Variable from 0 to 2 µm 
 Color of spore deposit:11 
 Pictures from Romagnesi, 1967_Link:
  • 3\246a1.jpg
  • 3\246a3.jpg
 
 
Basidia
 Length of basidia:43 - 50 
 Width of basidia:8 - 11.5 
 Number of sterigmata per basidium:Four 
 
Pleurocystidia
 Length of pleurocystidia:(65) 100 - 120 
 Width of pleurocystidia:(7.5) 12 - 15 
 Thickness of wall of pleurocystidia:Thin (all structures < 2 µm) 
 Shape of apices of pleurocystidia:Mainly capit./append./acerate 
 Sulfo-vanillin test on pleurocystidia:Blue/black/red/pur./or./brown 
 
Pleurocystidia abundance::
absent no
very dispersed 0-350/mm² ?
dispersed 350-700/mm² ?
 
rather abund 700-1500/mm² ?
abundant 1500-3000/mm² ?
very abundant >3000/mm² ?
 
 
Marginal cells
 Length of marginal cells:0 
 Width of marginal cells:0 
 
Subhymenium
 Subhymenium:Pseudoparenchymatous 
 Differentiation of supra and subpellis:Obvious 
 Size of cells in supra and subpellis:Same in size 
 
Pileocystidia
 Width of pileocystidia:(4.5) 6 - 10 
 Location of pileocystidia:Suprapellis 
 Septation of pileocystidia:Usually aseptate 
 Shape of apices of pileocystidia:Mainly rounded 
 
Hyphae of pileus
 Diameter of ends of pileipellis hyphae:3.2 - 4 
 Diameter of primordial hyphae:0 
 Vacuolar pigments of hyphae of pileus:Present 
 Membrane pigments of hyphae of pileus:Absent 
 Wall of hyphae of pileus:Thin (<1 µm) 
 Filamentous hyphae of pileus:Absent