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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