Inocybe petiginosa (Fr. : Fr.) Gillet + Picea

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Literature

• references
  Agerer R (1995) Anatomical characteristics of identified ectomycorrhizas: an attempt towards a natural classification. In Varma AK, Hock B (eds) Mycorrhiza: Structure, function, molecular biology and biotechnology. Springer, Berlin, Heidelberg, pp. 685-734.
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)
3 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)
2     Upper value of unspecified range (could be µ+s.d., but not known)
• abundance
  solitary or in small numbers
• main axis diameter
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
0.6 mm    Upper value of unspecified range (could be µ+s.d., but not known)
• rhizomorphs as stout, short, conical structures presence-abundance
  absent
• rhizomorphs presence
  absent
• exploration type
  short distance
Morphology of the unramified ends
• shape
  bent
or    sinuous
or    tortuous
• shape {of distal end}
  not inflated, cylindric
• colour
  white
• very tip colour
  white
• older parts colour
  brown
• 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
• mantle surface {in detail} kind
  loosely cottony
Morphology of sclerotia
• presence
  absent

Anatomy

Anatomical features of the entire mycorrhiza
• blue granules presence
  absent
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
  hyphae arranged net-like, repeatedly and squarrosely branched (type E)
• hyphal system kind
  with rather short, obtuse, even finger-like branches
• hyphae hyphal junctions angle {between}
  ca. 120°
• septa clamps presence
  absent
• cell contents presence-kind
  oily droplets, which do not stain in sulpho-vanillin
• cell diameter
2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
5 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• cell wall surface habit
  smooth
Anatomy of the middle mantle layer
• hyphae arrangement
  plectenchymatous, without pattern
Anatomy of the inner mantle layer
• organisation
  plectenchymatous
• hyphae arrangement
  without pattern
• septa clamps presence
  absent
• cell diameter
0 µm    Lower value of unspecified range (could be µ-s.d., but not known)
5 µm    Upper value of unspecified range (could be µ+s.d., but not known)
• cell length
0 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 contents presence-kind
  with oily droplets, which do not stain in sulpho-vanillin
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)
40 µm    Upper value of unspecified range (could be µ+s.d., but not known)

Anatomy of the tannin cells in longitudinal section
• presence
  present


Anatomy of the mantle in cross-section



Anatomy of the emanating elements in general
Anatomy of cystidia


Anatomy of emanating hyphae
• shape
  not striking

Anatomy of the ramification of emanating hyphae
• side-branches at septum number
  one side-branch at septum

Anatomy of the septa of emanating hyphae
• clamps presence
  present
• clamps hole presence
  absent

Anatomy of secondary septa of emanating hyphae
• presence
  present
• abundance
  abundant
• distribution
  partially crowded

Anatomy of the cells of emanating hyphae
• anatomy emanating elements emanating hyphae cell shape
  with ellbow-like protrusions
• anatomy emanating elements emanating hyphae cell shape {at distal end}
  simple
• anatomy emanating elements emanating hyphae cell 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 emanating elements emanating hyphae cell wall surface habit
  smooth
• anatomy emanating elements emanating hyphae cell wall thickness at tip {relative to remaining cell wall}
  thinner


Anatomy of rhizomorphs

Anatomy of hyphae in rhizomorphs
Anatomy of haustoria
• {in foreign ectomycorrhizae} presence
  absent

Chemical reactions

• reaction with cotton-blue-lactic-acid presence
  present

Ecology

• geographic occurrence continent
  Europe

Tree

• plant family
  Pinaceae
• plant genus
  Picea
• plant habitat kind
  nursery

Fungus

• family
  Cortinariaceae
• fruitbodies growth habit
  epigeous
or    pileate-lamellate

Remarks

• public notes
  Mycorrhizal system with a frequent, irregular branching pattern; mycorrhizal ends white when young, slowly browning with age; emanating hyphae partially banded; mantle in cotton-blue with strongly staining hyphae.

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