Lactarius rufus (Scop. : Fr.) Fr. + Betula

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Literature

• references
  Giltrap NJ (1979) Experimental studies on the establishment and stability of ectomycorrhizas. Diss Univ Sheffield.
Ingleby K, Mason PA, Last FT, Fleming LV (1990) Identification of ectomycorrhizas. ITE Research Publication no. 5. HMSO, London.

Morphology

Morphology of the mycorrhizal system
• length
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
12 mm    Upper value of unspecified range (could be µ+s.d., but not known)
• ramification presence-type
  monopodial-pinnate
• ramification orders
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)
• main axis diameter
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
0.5 mm    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
Morphology of the unramified ends
• shape
  bent
or    sinuous
• shape {of distal end}
  not inflated, cylindric
• colour
  brown
• older parts colour
  dark brown
• mantle {distinct} surface visibility
  present
• mantle transparency
  not transparent
• mantle dots presence-colour
  absent
• mantle carbonizing presence
  absent
• mantle surface {in general} habit
  smooth
• emanating hyphae presence
  present
• emanating hyphae abundance
  infrequent
Morphology of sclerotia
• presence
  absent

Anatomy

Anatomical features of the entire mycorrhiza
Anatomy of laticifers
• presence
  absent
or    present
• location
  inner mantle layer
• shape
  straight and even
• cell diameter
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)
Anatomical features of the mantle
Anatomy of the outer mantle layer apart from the ectormycorrhizal tip
• organisation
  pseudoparenchymatous
• organisation {if pseudoparenchymatous} cell shape
  epidermoid, puzzle-like, jig-saw-shaped
• septa thickness {relative to cell walls}
  as thick as walls
• septa clamps presence
  absent
• cell diameter
3 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)
• cell length
3 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)
• cell density
6     Minimum value
8     Lower value of unspecified range (could be µ-s.d., but not known)
12     Upper value of unspecified range (could be µ+s.d., but not known)
• cell wall surface habit
  smooth
Anatomy of the middle mantle layer
• organisation
  pseudoparenchymatous
• hyphae arrangement
  plectenchymatous, without pattern
• cell diameter
7 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)
• cell length
7 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)
• cell wall surface habit
  smooth
Anatomy of the inner mantle layer
• organisation
  plectenchymatous
• hyphae arrangement
  without pattern
• septa clamps presence
  absent
• cell 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)
Anatomy of the mantle in longitudinal section
• mantle thickness {apart from tip}
15 µm    Lower value of unspecified range (could be µ-s.d., but not known)
25 µm    Upper value of unspecified range (could be µ+s.d., but not known)



Anatomy of the mantle in cross-section



Anatomy of the Hartig net in cross-section
• anatomy mantle cross-section hyphal rows around cortical (epidermal) cells number
  one
• lobes width
1.5 µm    Lower value of unspecified range (could be µ-s.d., but not known)
4.5 µm    Upper value of unspecified range (could be µ+s.d., but not known)
Anatomy of the emanating elements in general
Anatomy of cystidia


Anatomy of emanating hyphae


Anatomy of the septa of emanating hyphae
• clamps presence
  absent


Anatomy of the cells of emanating hyphae
• anatomy emanating elements emanating hyphae cell diameter
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)


Anatomy of rhizomorphs

Anatomy of hyphae in rhizomorphs

Chemical reactions

• reaction with toluidin blue presence
  present

Ecology

• geographic occurrence continent
  Europe

Tree

• plant family
  Betulaceae
• plant genus
  Betula
• plant habitat kind
  forests, woods

Fungus

• family
  Russulaceae
• subgenus-section
  Lactarius sect. Russulares
• fruitbodies growth habit
  epigeous
or    pileate-lamellate

Remarks

• public notes
  Mycorrhizae are pale buff when young, changing to dark siena-brown with age; in toluidin-blue all mantle features can best be seen.

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