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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:Romagnesi 
 Synonyms and close species:S: R. adusta v. rubens
C: R. adusta v. rubens
R. densifolia ss Schaeffer, ss Blum et ss Shaffer
 
 Information given by author(s):Compactae nigricantinae
Europe: many especially in France
Type: Romagnesi 55-164
 
 Host(s):Deciduous, Coniferous 
 Taxon name_Mycobank:
 
 Bibliography:
 

Macro-characters

 
Stipe
 Width of stipe:12 - 30 
 Veil:Absent 
 Form of base of stipe:Not radicate 
 Form of stipe:Infl. at top/base/straight 
 Context of stipe:Partly hollow to solid/both 
 
Main color(s) of stipe::
grey/black yes
brown yes
white yes
yellow/cream no
blue no
 
orange no
red/pink yes
purple/vinaceous no
green no
   
 
 Length of stipe:30 - 65 
 
Pileus
 Type of pileipellis:Smooth 
 Striations of pileus:Absent 
 Viscosity of pileus:Variable 
 Form of center of pileus:Concave/depressed 
 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 yes
white no
yellow/cream no
blue no
 
orange no
red/pink no
purple/vinaceous no
green no
   
 
 Diameter of pileus:50 - 150 
 
Lamellae
 Spacing of lamellae:Variable 
 Number of lamellulae:More than lamellae 
 Furcation of lamellae:At or close to the stipe only 
 Color of ridges of lamellae:Variable in color 
 Attachment of lamellae:Decurrent 
 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:5 - 12 
 Odor:None 
 Flavor of flesh:No taste/sweet/bitter/burning 
 
Color changes
 Fruit body turns green/blue with age:Not turning green/blue 
 Fruit body turns red if touched/cut:Entire fruit body reddening 
 Fruit body turns yellow-brown with age:Var./weak change on stipe 
 Fruit body turns br. yellow if touched:Not turning bright yellow 
 Fruit body turns black with age/touched:Var./weak blackening of stipe 
 Fruit body turns grey with age:Var./weak on stipe 
 
Chemical reactions
 FeSO4 test on flesh:Green/green-grey 
 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) 7 - 9.5 (11.5) 
 Width of spores:(5.5) 6.5 - 7.5 
 Amyloid plage:Absent 
 Appearance of spores verrucae:Tips acute to rounded/both 
 Ornamentations in surface view:Irregular to linear or both 
 Connection(s) between verrucae:Crest like/joined fine lines 
 Overall appearance of spores:Partly to complet. retic./both 
 Height of verrucae:0 <= x <= 0.5 µm 
 Color of spore deposit:1 
 Pictures from Romagnesi, 1967_Link:
  • 3\1a1.jpg
  • 3\1a2.jpg
 
 
Basidia
 Length of basidia:45 - 55 
 Width of basidia:7 - 10 (11.5) 
 Number of sterigmata per basidium:Four 
 
Pleurocystidia
 Length of pleurocystidia:57 - 115 
 Width of pleurocystidia:5 - 7.2 
 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 
 Size of cells in supra and subpellis:Same in size 
 Gelification of subpellis:Not gelified (no gel. matrix) 
 
Pileocystidia
 Width of pileocystidia:3.5 - 5 
 Location of pileocystidia:Trama/supra/subpellis 
 Septation of pileocystidia:Usually aseptate 
 Shape of apices of pileocystidia:Variable 
 Sulfo-vanillin test on pileocystidia:Blue/black/red/pur./or./brown 
 Cresyl blue test on pileocystidia:No color changes 
 
Hyphae of pileus
 Diameter of ends of pileipellis hyphae:3 - 4.5 
 Diameter of primordial hyphae:0 
 Aggregation of hyphal ends of pileus:Not in tufts 
 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