Octavianina densa (Rodway) G. H. Cunn. + Eucalyptus

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Literature

references
  Chilvers GA (1968) Some distinctive types of eucalypt mycorrhiza. Aust J Bot 16: 49-70.

Morphology

Morphology of the mycorrhizal system
ramification presence-type
  monopodial-pyramidal
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)
rhizomorphs as stout, short, conical structures presence-abundance
  absent
rhizomorphs presence
  present
rhizomorphs frequency
  abundant
Morphology of the unramified ends
shape
  straight
or    bent
shape {of distal end}
  not inflated, cylindric
colour
  white
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 surface {in general} habit
  smooth
emanating hyphae presence
  present
emanating hyphae abundance
  infrequent
Morphology of rhizomorphs
diameter
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
0.2 mm    Upper value of unspecified range (could be µ+s.d., but not known)
cross-section shape
  round or roundish
colour
  yellowish
or    white
ramification kind-frequency
  frequently, at restricted points
origin location
  proximal
margin habit
  hairy
dimorphism presence
  absent
Morphology of sclerotia
presence
  absent

Anatomy

Anatomical features of the entire mycorrhiza
emanating elements presence-type
  cystidia
emanating elements cystidia location
  on outer mantle layer
or    on 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 wall surface habit
  smooth
Anatomy of the middle mantle layer
organisation
  plectenchymatous
cell wall surface habit
  smooth
Anatomy of the inner mantle layer
organisation
  plectenchymatous
Anatomy of the mantle in longitudinal section
mantle thickness {apart from tip}
17 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)
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
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


Anatomy of the cortical cells in longitudinal section
anatomy mantle longitudinal section cortical (epidermal) cells shape
  radially-oval to -elliptic, oriented obliquely

Anatomy of the Hartig net in longitudinal section
presence
  present
kind
  paraepidermal
anatomy mantle longitudinal section hyphal cells around cortical (epidermal) cells shape
  roundish
anatomy mantle longitudinal section hyphal cells around cortical cells (epidermal) thickness
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 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
unlayered mantle 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


Anatomy of the cortical cells in cross-section
anatomy mantle cross-section cortical (epidermal) cells shape
  radially-oval to -elliptic

Anatomy of the Hartig net in cross-section
presence
  present
kind
  apparently two rows deep
anatomy mantle cross-section hyphal cells around cortical (epidermal) cells shape
  roundish
anatomy mantle cross-section hyphal cells around cortical (epidermal) cells thickness
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 mantle cross-section hyphal rows around cortical (epidermal) cells number
  one
Anatomy of the emanating elements in general
Anatomy of cystidia

Anatomy of cystidia (type 1)
type
  awl-shaped, bristle-like (type A)
ramification presence-position
  medial
branches ramification presence
  absent
diameter {proximal}
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)
diameter {distal}
1.5 µm    Mean (= average)
length
60 µm    Lower value of unspecified range (could be µ-s.d., but not known)
80 µm    Upper value of unspecified range (could be µ+s.d., but not known)
cell wall thickness
0.5 µm    Minimum value
1 µm    Mean (= average)
1.2 µm    Maximum value
cell wall thickness {relative to mantle cells}
  thicker
surface habit
  smooth

Anatomy of emanating hyphae






Anatomy of rhizomorphs
cup-like structures on surface presence
  absent

Anatomy of hyphae in rhizomorphs
Anatomy of chlamydospores
presence
  absent
Anatomy of haustoria
{of ectomycorrhiza former} presence
  absent
{of foreign origin} presence
  absent

Ecology

geographic occurrence continent
  Australia
knowledge about association with foreign fruitbodies presence
  unknown

Tree

plant family
  Myrtaceae
plant genus
  Eucalyptus
plant habitat kind
  forests, woods

Fungus

fruitbodies growth habit
  hypogeous
or    gastroid

Remarks

public notes
  Mycorrhizal ends opaque white; rhizomorphs in older stages lightly pigmented yellow in patches, with a central core of thick hyphae.

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