Search on : Russula species

 


    

General information

 Substratum:Terricolous 
 
Continent::
Africa no
North America no
S. and C. America no
 
Asia no
Australia no
Europe yes
 
 Authority:Fries 
 Synonyms and close species:S: R. elephantina
C: R. elephantina
R. grisea
R. viscida
 
 Information given by author(s):Heterophyllae heterophyllinae
Type : 59-153
 
 Host(s):Coniferous (Picea) 
 Taxon name_Mycobank:
 
 Bibliography:
 

Macro-characters

 
Stipe
 Width of stipe:13 - 40 
 Veil:Absent 
 Form of base of stipe:Not radicate 
 Form of stipe:Straight/centrally inflated 
 Context of stipe:Partly hollow to solid/both 
 
Main color(s) of stipe::
grey/black no
brown yes
white yes
yellow/cream variable
blue no
 
orange no
red/pink no
purple/vinaceous no
green no
   
 
 Length of stipe:30 - 110 
 
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:Nil to medium or both 
 
Thickness of flesh of pileus
 Thickness of flesh of pileus:Thick 
 
Main color(s) of pileus::
grey/black no
brown yes
white no
yellow/cream no
blue no
 
orange no
red/pink no
purple/vinaceous no
green no
   
 
 Diameter of pileus:50 - 140 
 
Lamellae
 Spacing of lamellae:Variable 
 Number of lamellulae:Less than lamellae 
 Furcation of lamellae:At the stipe/everywhere/var. 
 Color of ridges of lamellae:Variable in color 
 Type of lamellae:Fragile to elastic or both 
 Type of lamellar ridges:Entire/smooth 
 
Main color(s) of lamellae::
grey/black no
brown variable
white no
yellow/cream yes
blue no
 
orange no
red/pink no
purple/vinaceous no
green no
   
 
 Height of lamellae:5 - 10 (15) 
 Odor:None 
 Flavor of flesh:No taste, sweet 
 
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:All/partial/no yellowing 
 Fruit body turns black with age/touched:Not blackening 
 Fruit body turns grey with age:Not turning grey 
 
Chemical reactions
 FeSO4 test on flesh:Pink/pink-orange/brown-grey 
 Ga´ac test on flesh:Blue/green 
 Aniline test on flesh:Red on carp./yellow on lamel. 
 
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 - 10.5 (11.5) 
 Width of spores:5.7 - 7.75 (8) 
 Amyloid plage:Variable/partial/weak 
 Appearance of spores verrucae:Tips round./truncat./cylindr. 
 Ornamentations in surface view:Round basis/irregular/linear 
 Connection(s) between verrucae:Crest like/joined fine lines 
 Overall appearance of spores:Partly reticulate 
 Height of verrucae:0 <= x <= 0.5 µm 
 Color of spore deposit:5 
 Pictures from Romagnesi, 1967_Link:
  • 3\181a1.jpg
  • 3\181a2.jpg
  • 3\181b.jpg
 
 
Basidia
 Length of basidia:50 - 60 
 Width of basidia:8.5 - 11.5 
 Number of sterigmata per basidium:Four 
 
Pleurocystidia
 Length of pleurocystidia:85 - 105 
 Width of pleurocystidia:8.5 - 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: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 ?
 
 
Subhymenium
 Subhymenium:Filamentous 
 Differentiation of supra and subpellis:Obvious 
 
Pileocystidia
 Width of pileocystidia:3.5 - 6 
 Shape of apices of pileocystidia:Mainly capit./append./acerate 
 
Hyphae of pileus
 Diameter of ends of pileipellis hyphae:(2) 3.5 - 7 
 Diameter of primordial hyphae:0 
 Aggregation of hyphal ends of pileus:In tufts/not in tufts 
 Vacuolar pigments of hyphae of pileus:Variable/weak 
 Membrane pigments of hyphae of pileus:Absent 
 Wall of hyphae of pileus:Thin (<1 µm) 
 Filamentous hyphae of pileus:Absent