Russula xerampelina (Schff.: Secr.) Fr. + Picea

– Item listing –

– Enlarged view –

Literature

• references
  Agerer R (1986) Studies on ectomycorrhizae III. Mycorrhizae formed by four fungi in the genera Lactarius and Russula on spruce. Mycotaxon 27: 1-59.
Agerer R (1987) Russula xerampelina. In Agerer R (ed) Colour Atlas of Ectomycorrhizae, plate 2, Einhorn-Verlag, Schwäbisch Gmünd. -

Morphology

Morphology of the mycorrhizal system
• ramification presence-type
  monopodial-pinnate
• tips {per 10 mm} number
0     Lower value of unspecified range (could be µ-s.d., but not known)
1     Upper value of unspecified range (could be µ+s.d., but not known)
• rhizomorphs as stout, short, conical structures presence-abundance
  absent
• rhizomorphs as short mycorrhiza-like outgrowths with blunt tips presence
  absent
• rhizomorphs presence
  present
• rhizomorphs frequency
  infrequent
• exploration type
  contact
Morphology of the unramified ends
• shape
  straight
or    bent
• shape {of distal end}
  not inflated, cylindric
• length
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
2 mm    Upper value of unspecified range (could be µ+s.d., but not known)
• diameter
0.24 mm    Minimum value
0.33 mm    Lower value of unspecified range (could be µ-s.d., but not known)
0.39 mm    Upper value of unspecified range (could be µ+s.d., but not known)
0.48 mm    Maximum value
• colour
  brown
• older parts colour
  dark brown
or    red
• mantle cortical cells visibility
  not visible
• mantle {distinct} surface visibility
  present
• mantle transparency
  not transparent
• mantle laticifers visibility
  absent
• mantle dots presence-colour
  absent
• mantle carbonizing presence
  absent
• mantle surface {in general} habit
  shiny
or    smooth
• emanating hyphae presence
  present
• emanating hyphae abundance
  infrequent
Morphology of rhizomorphs
• cross-section shape
  round or roundish
• colour
  whitish
• origin location
  proximal
• dimorphism presence
  absent
Morphology of sclerotia
• presence
  absent

Anatomy

Anatomical features of the entire mycorrhiza
• emanating elements presence-type
  rhizomorphs
or    cystidia
• emanating elements cystidia location
  on outer mantle layer
Anatomy of laticifers
• presence
  absent
Anatomical features of the mantle
Anatomy of the outer mantle layer apart from the ectormycorrhizal tip
• organisation
  plectenchymatous
• mantle type
  a net of coarse and irregularly shaped hyphae (type H)
• septa thickness {relative to cell walls}
  as thick as walls
• septa clamps presence
  absent
• cell shape
  cylindric, not constricted at septa
• cell diameter
4 µm    Minimum value
5 µm    Lower value of unspecified range (could be µ-s.d., but not known)
7 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• cell wall thickness
0.2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
1 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• cell wall surface habit
  smooth
• drops of exuded pigment presence
  absent
Anatomy of the inner mantle layer
• organisation
  plectenchymatous
• hyphae arrangement
  without pattern
• septa clamps presence
  absent
• cell diameter
2.5 µm    Lower value of unspecified range (could be µ-s.d., but not known)
3 µm    Upper value of unspecified range (could be µ+s.d., but not known)
Anatomy of the outer mantle layer of the ectormycorrhizal tip
• anatomy mantle outer mantle layer {of ectomycorrhizal tip} organisation
  like other parts of mantle
or    plectenchymatous
Anatomy of the mantle in longitudinal section
• mantle thickness {apart from tip}
20 µm    Lower value of unspecified range (could be µ-s.d., but not known)
30 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• mantle different layers presence
  discernable
• outer mantle layer organisation
  pseudoparenchymatous
• outer mantle layer hyphae tangentially length
6 µm    Lower value of unspecified range (could be µ-s.d., but not known)
10 µm    Upper value of unspecified range (could be µ+s.d., but not known)
15 µm    Maximum value
• outer mantle layer hyphae radially diameter
2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
4 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• middle mantle layer organisation
  pseudoparenchymatous
• middle mantle layer hyphae tangentially length
5 µm    Lower value of unspecified range (could be µ-s.d., but not known)
15 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• middle mantle layer hyphae radially diameter
3 µm    Lower value of unspecified range (could be µ-s.d., but not known)
6 µm    Upper value of unspecified range (could be µ+s.d., but not known)
8 µm    Maximum value
• inner mantle layer organisation
  pseudoparenchymatous
• inner mantle layer hyphae tangentially length
3 µm    Lower value of unspecified range (could be µ-s.d., but not known)
8 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• inner mantle layer hyphae radially diameter
2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
3 µm    Upper value of unspecified range (could be µ+s.d., but not known)

Anatomy of the tannin cells in longitudinal section
• presence
  present
• shape
  tangentially-oval, -elliptic or -cylindrical, and oriented in parallel to root axis
• tangentially length
30 µm    Lower value of unspecified range (could be µ-s.d., but not known)
60 µm    Upper value of unspecified range (could be µ+s.d., but not known)
80 µm    Maximum value
• radially diameter
4 µm    Lower value of unspecified range (could be µ-s.d., but not known)
10 µm    Upper value of unspecified range (could be µ+s.d., but not known)

Anatomy of the cortical cells in longitudinal section
• anatomy mantle longitudinal section cortical (epidermal) cells shape
  tangentially-oval to -elliptic or -cylindrical, and oriented obliquely
• anatomy mantle longitudinal section cortical (epidermal) cells tangentially length
30 µm    Minimum value
40 µm    Lower value of unspecified range (could be µ-s.d., but not known)
60 µm    Upper value of unspecified range (could be µ+s.d., but not known)
80 µm    Maximum value
• anatomy mantle longitudinal section cortical (epidermal) cells radially diameter
12 µm    Minimum value
15 µm    Lower value of unspecified range (could be µ-s.d., but not known)
22 µm    Upper value of unspecified range (could be µ+s.d., but not known)
28 µm    Maximum value

Anatomy of the Hartig net in longitudinal section
• presence
  present
• kind
  protruding towards endodermis
• anatomy mantle longitudinal section hyphal cells around tannin cells shape
  roundish
• anatomy mantle longitudinal section hyphal rows around tannin cells number
  one
• anatomy mantle longitudinal section hyphal cells around cortical (epidermal) cells shape
  roundish
• anatomy mantle longitudinal section hyphal rows around cortical (epidermal) cells number
  one
Anatomy of the mantle in cross-section
• mantle different layers presence
  discernible
• outer mantle layer organisation
  pseudoparenchymatous
• outer mantle layer hyphae tangentially length
2 µm    Minimum value
6 µm    Lower value of unspecified range (could be µ-s.d., but not known)
10 µm    Upper value of unspecified range (could be µ+s.d., but not known)
14 µm    Maximum value
• outer mantle layer hyphae radially diameter
2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
2.5 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• middle mantle layer organisation
  pseudoparenchymatous
• middle mantle layer hyphae tangentially length
2 µm    Minimum value
5 µm    Lower value of unspecified range (could be µ-s.d., but not known)
9 µm    Upper value of unspecified range (could be µ+s.d., but not known)
15 µm    Maximum value
• middle mantle layer hyphae radially diameter
2 µm    Minimum value
3 µm    Lower value of unspecified range (could be µ-s.d., but not known)
4 µm    Upper value of unspecified range (could be µ+s.d., but not known)
5 µm    Maximum value
• inner mantle layer organisation
  pseudoparenchymatous
• inner mantle layer hyphae tangentially length
2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
3 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• inner mantle layer hyphae radially diameter
2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
3 µm    Upper value of unspecified range (could be µ+s.d., but not known)

Anatomy of the tannin cells in cross-section
• presence
  present
• rows number
2     Mean (= average)
3     Maximum value
• shape
  tangentially-oval to tangentially-elliptic
• tangentially length
50 µm    Lower value of unspecified range (could be µ-s.d., but not known)
65 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• radially diameter
2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
17 µm    Upper value of unspecified range (could be µ+s.d., but not known)
20 µm    Maximum value

Anatomy of the cortical cells in cross-section
• anatomy mantle cross-section cortical (epidermal) cells shape
  radially-oval to -elliptic
• anatomy mantle cross-section cortical (epidermal) cells tangentially length
10 µm    Lower value of unspecified range (could be µ-s.d., but not known)
20 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• anatomy mantle cross-section cortical (epidermal) cells radially diameter
20 µm    Minimum value
27 µm    Lower value of unspecified range (could be µ-s.d., but not known)
35 µm    Upper value of unspecified range (could be µ+s.d., but not known)

Anatomy of the Hartig net in cross-section
• presence
  present
• kind
  protruding towards endodermis
• anatomy mantle cross-section hyphal cells around tannin cells shape
  roundish
• anatomy mantle cross-section hyphal rows around tannin cells number
  one
or    two
or    three
• anatomy mantle cross-section hyphal cells around cortical (epidermal) cells shape
  roundish
• anatomy mantle cross-section hyphal rows around cortical (epidermal) cells number
  one
Anatomy of the emanating elements in general
• backwards-oriented clamps presence
  absent
• anastomoses location
  not specified
Anatomy of cystidia

Anatomy of cystidia (type 1)
• type
  flask-shaped with an apical knob (type D)
• apical knobs number
1     Mean (= average)
• diameter {proximal}
5 µm    Lower value of unspecified range (could be µ-s.d., but not known)
6 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• length
30 µm    Lower value of unspecified range (could be µ-s.d., but not known)
40 µm    Upper value of unspecified range (could be µ+s.d., but not known)

Anatomy of emanating hyphae
• shape
  not striking
• cell pigment location-colour
  absent
• drops of exuded pigment presence
  absent


Anatomy of the septa of emanating hyphae
• clamps presence
  absent
• clamps hole presence
  absent
• clamps blister-like structure {at basis} presence
  absent


Anatomy of the cells of emanating hyphae
• anatomy emanating elements emanating hyphae cell shape
  even
• anatomy emanating elements emanating hyphae cell diameter
1.5 µm    Lower value of unspecified range (could be µ-s.d., but not known)
2 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• anatomy emanating elements emanating hyphae cell wall surface habit
  smooth
or    without lens-shaped appositions
or    without spindle-shaped appositions
• anatomy emanating elements emanating hyphae cell wall thickness
0.2 µm    Mean (= average)
• anatomy emanating elements emanating hyphae cell wall thickness at tip {relative to remaining cell wall}
  thinner
• anatomy emanating elements emanating hyphae cell wall {apart from tip} evenness
  even in thickness


Anatomy of rhizomorphs
• type
  differentiated; thick hyphae forming a core, septa complete or sometimes enlarged
(type E)
• internal nodia presence
  absent
• cup-like structures on surface presence
  absent
• a "ball" of intertwined, ramified, thin hyphae presence
  absent

Anatomy of hyphae in rhizomorphs
• ampullate, trumpet-like inflated presence
  absent
Anatomy of vessel-like or thickened hyphae in rhizomorphs
• anatomy emanating elements rhizomorphs hyphae ampullate, trumpet-like inflated presence
  absent
Anatomy of central non-vessel-like hyphae in rhizomorphs
• anatomy emanating elements rhizomorphs hyphae ampullate, trumpet-like inflated presence
  absent
Anatomy of peripheral hyphae in rhizomorphs
• anatomy emanating elements rhizomorphs hyphae ampullate, trumpet-like inflated presence
  absent
Anatomy of solitary thick-walled hyphae in rhizomorphs
• anatomy emanating elements rhizomorphs hyphae ampullate, trumpet-like inflated presence
  absent
Anatomy of chlamydospores
• presence
  absent
Anatomy of haustoria
• {of ectomycorrhiza former} presence
  absent
Anatomy of nuclei
• number {per cell}
2     Mean (= average)
Anatomy of siderophilous granulations
• presence
  present
• frequency
  in few cells

Autofluorescence

• whole mycorrhizae UV 254 nm colour-presence
  absent
• whole mycorrhizae UV 366 nm colour-presence
  absent
• mantle in section UV-filter 340-380 nm presence
  present
• mantle in section blue-filter, 450-490 nm presence
  present

Chemical reactions

• reaction with acid fuchsin presence
  present
• reaction with brillant-cresyl-blue presence
  present
• reaction with cotton-blue-lactic-acid presence
  present
• reaction with FeSO4 presence
  absent
• reaction with guaiac presence
  absent
• reaction with KOH 10% presence
  absent
• reaction with Melzer's reagent presence
  absent
• reaction with sulpho-vanillin presence
  present
• reaction with toluidin blue presence
  present

Ecology

• geographic occurrence continent
  Europe

Tree

• plant family
  Pinaceae
• plant genus
  Picea
• plant habitat kind
  forests, woods

Fungus

• family
  Russulaceae
• subgenus-section
  Russula sect. Rigidae
• subsection
  Russula sect. Rigidae subsect. Xerampelinae
• fruitbodies growth habit
  epigeous
or    pileate-lamellate

Remarks

• public notes
  Mycorrhizal ends more or less straight, dark flesh-brown, older parts dark reddish brown; autofluorescence of mantle in section with UV-filter slightly blue, with blue-filter greenish yellow; mantle hyphae in sulfo-vanillin pinkish, in brillant-cresyl-blue bright blue and after treatment with water violet-blue, in toluidin-blue violet-blue, in cotton-blue walls distinctly blue, in acid fuchsin slightly reddish; nuclei lying close together.

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