Piloderma croceum Erikss. & Hjortst. + Picea

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Literature

• references
  Brand F (1991) Ektomykorrhizen an Fagus sylvatica. Charakterisierung und Identifizierung, ökologische Kennzeichnung und unsterile Kultivierung. Libri Botanici 2: 1-229.
Haug I (1987) Licht- und elektronenmikroskopische Untersuchungen an Mykorrhizen von Fichtenbeständen im Schwarzwald. Diss Univ München.
Haug I, Pritsch K (1992) Ectomycorrhizal types on spruce (Picea abies L. Karst.) in the Black Forest. A microscopical atlas. Kernforschungszentrum Karlsruhe.
Mikola P (1962) The bright yellow mycorrhiza of raw humus. Proc 13th IUFRO congr, Wien, Sect 124-4.
Raidl S (1997) Studien zur Ontogenie an Rhizomorphen von Ektomykorrhizen. Bibl Mycol 169: 1-184.

Morphology

Morphology of the mycorrhizal system
• ramification presence-type
  monopodial-pinnate
• 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
  abundant
• exploration type
  medium distance fringe
Morphology of the unramified ends
• shape
  bent
• shape {of distal end}
  not inflated, cylindric
• colour
  yellow
• very tip colour
  yellow
• older parts colour
  yellow
• 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
  silvery
or    not smooth
• mantle surface {in detail} kind
  loosely cottony
or    loosely stringy
• emanating hyphae presence
  present
• emanating hyphae abundance
  abundant
Morphology of rhizomorphs
• diameter
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
0.25 mm    Upper value of unspecified range (could be µ+s.d., but not known)
• cross-section shape
  round or roundish
or    flat
• colour
  concolourous to mantle
• ramification kind-frequency
  repeatedly into smaller filaments
• connection to mantle kind
  oblique
• origin location
  not specific
or    distal
• margin habit
  hairy
• dimorphism presence
  absent
Morphology of sclerotia
• presence
  absent

Anatomy

Anatomical features of the entire mycorrhiza
• emanating elements presence-type
  rhizomorphs
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 rather irregularly arranged and no special pattern discernible (type B)
• cell pigment location-colour
  epimembranaceously yellowish
• cell diameter
1.5 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)
• cell wall surface habit
  rough
and    with few crystals
Anatomy of the middle mantle layer
• organisation
  plectenchymatous
Anatomy of the inner mantle layer
• organisation
  plectenchymatous
• hyphae arrangement
  ring-like
• septa clamps presence
  absent
• cell diameter
1.5 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)
Anatomy of the mantle in longitudinal section
• mantle thickness {apart from tip}
40 µm    Mean (= average)
• mantle different layers presence
  not discernable
• outer mantle layer organisation
  plectenchymatous
• middle mantle layer organisation
  plectenchymatous
• inner mantle layer organisation
  plectenchymatous
• unlayered mantle hyphae radially diameter
1.7 µm    Lower value of unspecified range (could be µ-s.d., but not known)
2.3 µm    Upper value of unspecified range (could be µ+s.d., but not known)

Anatomy of the tannin cells in longitudinal section
• presence
  present
• rows number
1     Mean (= average)
• shape
  tangentially-oval, -elliptic or -cylindrical, and oriented in parallel to root axis

Anatomy of the cortical cells in longitudinal section
• anatomy mantle longitudinal section cortical (epidermal) cells shape
  tangentially-oval to -elliptic or -cylindrical, and oriented in parallel to root axis

Anatomy of the Hartig net in longitudinal section
• anatomy mantle longitudinal section hyphal cells around tannin cells shape
  roundish
• anatomy mantle longitudinal section hyphal rows around tannin cells number
  one
or    two
• 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
  not discernible
• outer mantle layer organisation
  plectenchymatous
• middle mantle layer organisation
  plectenchymatous
• inner mantle layer organisation
  plectenchymatous

Anatomy of the tannin cells in cross-section
• presence
  present


Anatomy of the emanating elements in general
• backwards-oriented ramifications presence
  present
• backwards-oriented clamps presence
  absent
• anastomoses surface habit
  rough or with crystals
• anastomoses anastomosal bridge thickness {relative to hyphae}
  as thick as
Anatomy of cystidia


Anatomy of emanating hyphae
• cell pigment location-colour
  epimembranaceously yellowish
• drops of exuded pigment presence
  present


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 diameter
2.5 µm    Mean (= average)
• anatomy emanating elements emanating hyphae cell wall surface habit
  rough of warts
or    with crystals
or    without lens-shaped appositions
or    without spindle-shaped appositions
• anatomy emanating elements emanating hyphae cell wall surface structures shape
  hemispherical warts

Anatomy of the crystals occouring in emanating hyphae
• presence shape
  acicular
• orientation
  transversely

Anatomy of rhizomorphs
• type
  undifferentiated; hyphae rather loosely woven and of uniform diameter
(type A)
• gelatinous matrix 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
Ultrastructure
• septal pores type
  as dolipores with perforated parenthesome
• mantle matrix presence-kind
  absent

Ecology

• substrate
  in organic layer
• {occurence in} humus type
  raw humus
• geographic occurrence continent
  Europe

Tree

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

Fungus

• family
  Atheliaceae ("Corticiaceae")
• fruitbodies growth habit
  epigeous
or    corticioid

Remarks

• public notes
  Mycorrhizae in water whitish yellow, light yellow or even white after a while.

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