Xerocomus armeniacus (Quel.) Quel. + Quercus

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Literature

references
  Palfner G, Agerer R (1995) Sind die Ektomykorrhizen von Xerocomus subtomentosus und X. armeniacus unterscheidbar? Z Mykol 61(1): 45-58.

Morphology

Morphology of the mycorrhizal system
length
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
6.2 mm    Upper value of unspecified range (could be µ+s.d., but not known)
ramification presence-type
  monopodial-pyramidal
or    coralloid
tips {per 10 mm} number
24     Lower value of unspecified range (could be µ-s.d., but not known)
30     Upper value of unspecified range (could be µ+s.d., but not known)
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)
abundance
  solitary or in small numbers
main axis diameter
0.3 mm    Minimum value
0.4 mm    Mean (= average)
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
exploration type
  long distance
Morphology of the unramified ends
shape
  bent
or    sinuous
or    tortuous
shape {of distal end}
  tapering
length
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
0.9 mm    Upper value of unspecified range (could be µ+s.d., but not known)
2.5 mm    Maximum value
diameter
0.3 mm    Minimum value
0.4 mm    Mean (= average)
colour
  yellow
or    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 carbonizing presence
  absent
mantle surface {in general} habit
  silvery
or    smooth
mantle surface {in detail} kind
  forming rings (reticulate)
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)
0.18 mm    Upper value of unspecified range (could be µ+s.d., but not known)
cross-section shape
  round or roundish
colour
  yellow
or    yellowish
or    whitish
ramification kind-frequency
  infrequently, at restricted points
connection to mantle kind
  distinct
origin location
  proximal
margin habit
  smooth
dimorphism presence
  absent
Morphology of sclerotia
presence
  absent

Anatomy

Anatomical features of the entire mycorrhiza
emanating elements presence-type
  rhizomorphs
blue granules presence
  absent
Anatomy of laticifers
presence
  absent
Anatomical features of the mantle
matrix presence
  present
matrix location
  inner mantle layer
Anatomy of the outer mantle layer apart from the ectormycorrhizal tip
organisation
  plectenchymatous
mantle type
  ring-like arrangement of hyphal bundles (type A)
septa thickness {relative to cell walls}
  thinner than walls
and    as thick as walls
septa clamps presence
  absent
cell shape
  cylindric, constricted at septa
and    slightly inflated in middle portions
cell pigment location-colour
  membranaceously yellowish
and    plasmatically yellowish
cell diameter
5 µm    Minimum value
6 µm    Mean (= average)
10 µm    Maximum value
cell length
7 µm    Minimum value
28 µm    Mean (= average)
70 µm    Maximum value
cell wall thickness
0.2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
0.5 µm    Upper value of unspecified range (could be µ+s.d., but not known)
cell wall surface habit
  rough
drops of exuded pigment presence
  absent
Anatomy of the middle mantle layer
organisation
  plectenchymatous
hyphae arrangement
  plectenchymatous, ring-like
cell pigment location-colour
  colourless
cell diameter
3 µm    Minimum value
6.5 µm    Mean (= average)
10 µm    Maximum value
cell length
10 µm    Minimum value
23.5 µm    Mean (= average)
47 µm    Maximum value
cell contents presence-kind
  absent
cell wall thickness
0.2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
0.5 µm    Upper value of unspecified range (could be µ+s.d., but not known)
cell wall surface habit
  rough
Anatomy of the inner mantle layer
organisation
  plectenchymatous with pseudoparenchymatous nests of cells
matrix kind
  not gelatinous
hyphae arrangement
  ring-like
septa clamps presence
  absent
cell pigment location-colour
  absent
cell diameter
2 µm    Minimum value
4 µm    Mean (= average)
8 µm    Maximum value
cell length
5 µm    Minimum value
14.5 µm    Mean (= average)
38 µm    Maximum value
cell contents presence-kind
  absent
Anatomy of the mantle in longitudinal section
mantle thickness {apart from tip}
10 µm    Lower value of unspecified range (could be µ-s.d., but not known)
50 µm    Upper value of unspecified range (could be µ+s.d., but not known)
mantle different layers presence
  discernable
outer mantle layer organisation
  plectenchymatous
outer mantle layer hyphae tangentially length
5 µm    Minimum value
14 µm    Mean (= average)
35 µm    Maximum value
outer mantle layer hyphae radially diameter
5 µm    Minimum value
7 µm    Mean (= average)
12 µm    Maximum value
middle mantle layer organisation
  pseudoparenchymatous
middle mantle layer hyphae tangentially length
3 µm    Minimum value
9 µm    Mean (= average)
25 µm    Maximum value
middle mantle layer hyphae radially diameter
2 µm    Minimum value
7 µm    Mean (= average)
12 µm    Maximum value
inner mantle layer organisation
  pseudoparenchymatous
inner mantle layer hyphae tangentially length
3 µm    Minimum value
5 µm    Mean (= average)
10 µm    Maximum value
inner mantle layer hyphae radially diameter
2 µm    Minimum value
4 µm    Mean (= average)
5 µm    Maximum value

Anatomy of the tannin cells in longitudinal section
presence
  absent

Anatomy of the cortical cells in longitudinal section
anatomy mantle longitudinal section cortical (epidermal) cells tangentially length
10 µm    Minimum value
12 µm    Mean (= average)
15 µm    Maximum value
anatomy mantle longitudinal section cortical (epidermal) cells radially diameter
45 µm    Minimum value
59 µm    Mean (= average)
70 µm    Maximum value
anatomy mantle longitudinal section cortical (epidermal) cells mean shape-ratio CCq (ECq)
0.21     Mean (= average)

Anatomy of the Hartig net in longitudinal section
presence
  present
kind
  paraepidermal
structure {in plan view}
  of palmetti type
lobes width
2 µm    Minimum value
4 µm    Mean (= average)
6 µm    Maximum value
Anatomy of the mantle in cross-section
mantle different layers presence
  discernible
outer mantle layer organisation
  plectenchymatous
outer mantle layer hyphae tangentially length
5 µm    Minimum value
14 µm    Mean (= average)
35 µm    Maximum value
outer mantle layer hyphae radially diameter
5 µm    Minimum value
7 µm    Mean (= average)
12 µm    Maximum value
middle mantle layer organisation
  pseudoparenchymatous
middle mantle layer hyphae tangentially length
3 µm    Minimum value
9 µm    Mean (= average)
25 µm    Maximum value
middle mantle layer hyphae radially diameter
2 µm    Minimum value
7 µm    Mean (= average)
12 µm    Maximum value
inner mantle layer organisation
  pseudoparenchymatous
inner mantle layer hyphae tangentially length
3 µm    Minimum value
5 µm    Mean (= average)
10 µm    Maximum value
inner mantle layer hyphae radially diameter
2 µm    Minimum value
4 µm    Mean (= average)
5 µm    Maximum value

Anatomy of the tannin cells in cross-section
shape
  radially-oval to -elliptic

Anatomy of the cortical cells in cross-section
anatomy mantle cross-section cortical (epidermal) cells mean shape-ratio CCq
1.1     Mean (= average)

Anatomy of the Hartig net in cross-section
anatomy mantle cross-section hyphal cells around cortical (epidermal) cells thickness
2 µm    Minimum value
4 µm    Mean (= average)
5 µm    Maximum value
anatomy mantle cross-section hyphal rows around cortical (epidermal) cells number
  one
lobes width
2 µm    Minimum value
4 µm    Mean (= average)
6 µm    Maximum value
structure {in plan view}
  of palmetti type
Anatomy of the emanating elements in general
backwards-oriented clamps presence
  absent
Anatomy of cystidia


Anatomy of emanating hyphae
drops of exuded pigment presence
  absent


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 wall surface habit
  rough of warts
or    without lens-shaped appositions
or    without spindle-shaped appositions
anatomy emanating elements emanating hyphae cell wall surface structures shape
  hemispherical warts


Anatomy of rhizomorphs
type
  highly differentiated; thick hyphae forming mostly a core, septa often partially or completely dissolved
(type F)
nodia presence
  present
internal nodia presence
  absent
gelatinous matrix presence
  absent
gelatinized hyphae presence
  absent
cup-like structures on surface presence
  absent
conical young side-branches presence
  present
a "ball" of intertwined, ramified, thin hyphae presence
  absent

Anatomy of hyphae in rhizomorphs
contents presence-kind
  filled with brownish or yellowish substances
ampullate, trumpet-like inflated presence
  absent
Anatomy of vessel-like or thickened hyphae in rhizomorphs
anatomy emanating elements rhizomorphs hyphae contents presence-kind
  filled with brownish or yellowish substances
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 contents presence-kind
  filled with brownish or yellowish substances
anatomy emanating elements rhizomorphs hyphae ampullate, trumpet-like inflated presence
  absent
Anatomy of peripheral hyphae in rhizomorphs
anatomy emanating elements rhizomorphs hyphae contents presence-kind
  filled with brownish or yellowish substances
anatomy emanating elements rhizomorphs hyphae ampullate, trumpet-like inflated presence
  absent
Anatomy of solitary thick-walled hyphae in rhizomorphs
anatomy emanating elements rhizomorphs hyphae contents presence-kind
  filled with brownish or yellowish substances
anatomy emanating elements rhizomorphs hyphae ampullate, trumpet-like inflated presence
  absent
Anatomy of chlamydospores
presence
  absent
Anatomy of haustoria
{of ectomycorrhiza former} presence
  absent
{of foreign origin} presence
  absent
Anatomy of nuclei
number {per cell}
2     Mean (= average)
shape
  round
or    oval
diameter
0.8 µm    Minimum value
1.4 µm    Mean (= average)
2 µm    Maximum value
distance {between each other}
0 µm    Minimum value
0.4 µm    Mean (= average)
0.8 µm    Maximum value

Autofluorescence

whole mycorrhizae UV 254 nm colour-presence
  absent
whole mycorrhizae UV 366 nm colour-presence
  absent
mantle in section UV-filter 340-380 nm presence
  present
mantle in section blue-filter, 450-490 nm presence
  present
mantle in section green-filter, 530-560 nm presence
  absent

Chemical reactions

reaction with acid fuchsin presence
  present
reaction with anilin presence
  present
reaction with brillant-cresyl-blue presence
  present
reaction with cotton-blue-lactic-acid presence
  present
reaction with ethanol 70% presence
  absent
reaction with FeSO4 presence
  present
reaction with formol 40% presence
  absent
reaction with guaiac presence
  present
reaction with KOH 10% presence
  absent
reaction with Melzer's reagent presence
  absent
reaction with phenole presence
  present
reaction with phenole-aniline presence
  present
reaction with ruthenium-red presence
  present
reaction with sulpho-vanillin presence
  absent

Ecology

substrate
  in organic layer
or    in organically enriched mineral horizon
geographic occurrence continent
  Europe
knowledge about association with foreign fruitbodies presence
  unknown

Tree

plant family
  Fagaceae
plant genus
  Quercus
plant habitat kind
  forests, woods

Fungus

family
  Boletaceae
subfamily
  Boletaceae subf. Xerocomoideae
fruitbodies growth habit
  epigeous
or    pileate-porioid

Remarks

public notes
  Mycorrhizal systems irregularly monopodial-pyramidal sometimes almost coralloid; mycorrhizal ends lemon-yellow or whitish yellow, roots partially visible; rhizomorphs lemon-yellow to whitish yellow; tips of short mantle hyphae sometimes somewhat cystidia-like inflated; autofluorescence of mantle in section with UV-filter with distinctly whitish to light grey mantle cells, with blue-filter the same cells orange-brown or yellow-brown; mantle in guaiac with partially black-blue to violet margins, in FeSO4 grey-green to yellowish, in brillant-cresyl-blue green-blue, in cotton-blue greenish blue, in phenole-aniline inner mantle layers grey, yellow pigment bleaching, in phenole inner mantle layers grey, in aniline dark grey, in acid fuchsin dark rose to lilac, in ruthenium-red grey-brown, in safranine deeply red, orange or violet.

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