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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:EBB.-M÷ller-Schaeffer 
 Synonyms and close species:C: R. emetica v. silvestris
R. lilacea
 
 Information given by author(s):Tenellae rhodellinae
Comon
Type : 53-210
 
 Host(s):Deciduous (Fagus, Quercus) 
 Taxon name_Mycobank:
 
 Bibliography:
 

Macro-characters

 
Stipe
 Width of stipe:4 - 15 
 Veil:Absent 
 Form of base of stipe:Not radicate 
 Form of stipe:Infl. at top/base/straight 
 Context of stipe:Partly to completely hollow 
 
Main color(s) of stipe::
grey/black no
brown yes
white yes
yellow/cream yes
blue no
 
orange no
red/pink no
purple/vinaceous no
green no
   
 
 Length of stipe:15 - 50 
 
Pileus
 Type of pileipellis:Smooth 
 Striations of pileus:Absent to weak or both 
 Viscosity of pileus:Variable 
 Form of center of pileus:Concave to plane or both 
 Separability of pileus:Medium to complete 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 yes
purple/vinaceous yes
green no
   
 
 Diameter of pileus:(15) 25 - 60 
 
Lamellae
 Spacing of lamellae:Variable 
 Number of lamellulae:Less than lamellae 
 Furcation of lamellae:At the stipe/absent 
 Color of ridges of lamellae:Fully concolorous with faces 
 Attachment of lamellae:Free 
 Type of lamellae:Fragile/breakable 
 Type of lamellar ridges:Entire/smooth 
 
Main color(s) of lamellae::
grey/black no
brown no
white yes
yellow/cream yes
blue no
 
orange no
red/pink no
purple/vinaceous no
green no
   
 
 Height of lamellae:2.5 - 6 
 Odor:Variable/weak and pleasant 
 Flavor of flesh:Sweet to bitter or both 
 
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 yellow-brown with age:Entire fruit body 
 Fruit body turns br. yellow if touched:Not turning bright yellow 
 Fruit body turns black with age/touched:Not blackening 
 Fruit body turns grey with age:All/partial/no turning grey 
 
Chemical reactions
 Ga´ac test on flesh:Blue/green 
 
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:6.5 - 8 (8.5) 
 Width of spores:5.2 - 6.7 
 Amyloid plage:Present 
 Appearance of spores verrucae:Tips acute to rounded/both 
 Ornamentations in surface view:Round bases to irregular/both 
 Connection(s) between verrucae:Crest like/joined fine lines 
 Overall appearance of spores:Not to partly reticulate/both 
 Height of verrucae:Variable from 0 to 2 µm 
 Color of spore deposit:5 
 Pictures from Romagnesi, 1967_Link:
  • 3\310a3.jpg
  • 3\310a4.jpg
 
 
Basidia
 Length of basidia:25 - 40 (48) 
 Width of basidia:9 - 10 (12.5) 
 Number of sterigmata per basidium:Four 
 
Pleurocystidia
 Length of pleurocystidia:40 - 65 
 Width of pleurocystidia:(5.5) 8 - 10 
 Thickness of wall of pleurocystidia:Thin (all structures < 2 µm) 
 Shape of apices of pleurocystidia:Mainly rounded 
 Sulfo-vanillin test on pleurocystidia:Variable/weak reaction 
 
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
 Differentiation of supra and subpellis:Obvious 
 Size of cells in supra and subpellis:Same in size 
 
Pileocystidia
 Width of pileocystidia:3.5 - 6 (8) 
 Location of pileocystidia:Suprapellis 
 Septation of pileocystidia:Usually septate 
 
Hyphae of pileus
 Diameter of ends of pileipellis hyphae:1.5 - 1.7 
 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