Xerocomus chrysenteron (Bull.: St. Amans) Quel. + Fagus

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Literature

references
  Brand F (1989) Studies on ectomycorrhizae XXI. Beech ectomycorrhizae and rhizomorphs of Xerocomus chrysenteron (Boletales). Nova Hedwigia 48: 469-483.
Brand F (1989) Xerocomus chrysenteron. In Agerer R (ed) Colour Atlas of Ectomycorrhizae, plate 34, Einhorn-Verlag, Schwäbisch Gmünd.
Hofmann H-P (1989) The ultrastructure of natural beech ectomycorrhizae and rhizomorphs of the basidiomycete Xerocomus chrysenteron (Bull.: St. Amans) Quel. Nova Hedwigia 48: 455-468.

Morphology

Morphology of the mycorrhizal system
length
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
3.5 mm    Upper value of unspecified range (could be µ+s.d., but not known)
ramification presence-type
  monopodial-pyramidal
or    coralloid
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)
main axis diameter
0.5 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
  present
rhizomorphs frequency
  infrequent
exploration type
  long distance
Morphology of the unramified ends
shape
  straight
or    bent
shape {of distal end}
  not inflated, cylindric
length
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
1.5 mm    Upper value of unspecified range (could be µ+s.d., but not known)
diameter
0.35 mm    Lower value of unspecified range (could be µ-s.d., but not known)
0.4 mm    Upper value of unspecified range (could be µ+s.d., but not known)
colour
  brown
or    ochre, yellowish brown
or    green
or    white
very tip colour
  white
older parts colour
  brown
or    ochre, yellowish brown
or    green
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
emanating hyphae presence
  absent
or    present
emanating hyphae abundance
  infrequent
Morphology of rhizomorphs
diameter
0 mm    Lower value of unspecified range (could be µ-s.d., but not known)
0.3 mm    Upper value of unspecified range (could be µ+s.d., but not known)
cross-section shape
  round or roundish
colour
  concolourous to mantle
or    yellowish
or    whitish
ramification kind-frequency
  frequently, 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
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
  ring-like arrangement of hyphal bundles (type A)
hyphae hyphal junctions angle {between}
  ca. 45° and less
septa thickness {relative to cell walls}
  as thick as walls
septa clamps presence
  absent
cell shape
  cylindric, constricted at septa
cell pigment location-colour
  plasmatically greenish
and    plasmatically brownish
cell diameter
3 µm    Mean (= average)
cell wall thickness
0.2 µm    Mean (= average)
cell wall surface habit
  smooth
drops of exuded pigment presence
  absent
Anatomy of the middle mantle layer
organisation
  plectenchymatous
cell diameter
4 µm    Lower value of unspecified range (could be µ-s.d., but not known)
6 µm    Upper value of unspecified range (could be µ+s.d., but not known)
10 µm    Maximum value
cell wall surface habit
  smooth
Anatomy of the inner mantle layer
organisation
  plectenchymatous
hyphae arrangement
  without pattern
or    ring-like
septa clamps presence
  absent
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 the mantle in longitudinal section
mantle thickness {apart from tip}
40 µm    Lower value of unspecified range (could be µ-s.d., but not known)
60 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 radially 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)
inner mantle layer organisation
  plectenchymatous
inner mantle layer hyphae radially 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)

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 shape
  radially-oval to -elliptic, oriented obliquely
anatomy mantle longitudinal section cortical (epidermal) cells tangentially length
10 µm    Lower value of unspecified range (could be µ-s.d., but not known)
20 µm    Upper value of unspecified range (could be µ+s.d., but not known)
anatomy mantle longitudinal section cortical (epidermal) cells radially diameter
30 µm    Lower value of unspecified range (could be µ-s.d., but not known)
55 µm    Upper value of unspecified range (could be µ+s.d., but not known)

Anatomy of the Hartig net in longitudinal section
presence
  present
kind
  periepidermal
structure {in plan view}
  of palmetti type
Anatomy of the mantle in cross-section
mantle different layers presence
  discernible
outer mantle layer organisation
  plectenchymatous
outer mantle layer hyphae radially 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)
inner mantle layer organisation
  plectenchymatous
inner mantle layer hyphae radially 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)

Anatomy of the tannin cells in cross-section
presence
  absent

Anatomy of the cortical cells in cross-section
anatomy mantle cross-section cortical (epidermal) cells shape
  round
or    radially-oval to -elliptic
anatomy mantle cross-section cortical (epidermal) cells tangentially length
12 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 mantle cross-section cortical (epidermal) cells radially diameter
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 Hartig net in cross-section
presence
  present
kind
  in tow rows, not reaching endodermis
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 of the emanating elements in general
septal pores configuration
  dolipore-like structures
anastomoses type
  open, with a short bridge or bridge almost lacking
Anatomy of cystidia


Anatomy of emanating hyphae
drops of exuded pigment presence
  absent


Anatomy of the septa of emanating hyphae
clamps presence
  absent


Anatomy of the cells of emanating hyphae
anatomy emanating elements emanating hyphae cell shape
  slightly constricted
anatomy emanating elements emanating hyphae cell shape {at distal end}
  simple
anatomy emanating elements emanating hyphae cell diameter
3 µm    Mean (= average)
anatomy emanating elements emanating hyphae cell wall surface habit
  smooth
or    without lens-shaped appositions
or    without spindle-shaped appositions
anatomy emanating elements emanating hyphae cell wall thickness
0.2 µm    Mean (= average)
anatomy emanating elements emanating hyphae cell wall thickness at tip {relative to remaining cell wall}
  thinner
anatomy emanating elements emanating hyphae cell wall {apart from tip} evenness
  even in thickness


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
  present
gelatinous matrix presence
  absent
a "ball" of intertwined, ramified, thin hyphae 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
{of foreign origin} presence
  absent
Anatomy of nuclei
number {per cell}
2     Mean (= average)
shape
  round
diameter
1 µm    Lower value of unspecified range (could be µ-s.d., but not known)
1.8 µm    Upper value of unspecified range (could be µ+s.d., but not known)
length
1 µm    Lower value of unspecified range (could be µ-s.d., but not known)
1.8 µm    Upper value of unspecified range (could be µ+s.d., but not known)
Ultrastructure
septal pores type
  as dolipores with perforated parenthesome
mantle matrix presence-kind
  transparent

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

Chemical reactions

reaction with acid fuchsin presence
  absent
reaction with anilin presence
  absent
reaction with brillant-cresyl-blue presence
  absent
reaction with cotton-blue-lactic-acid presence
  absent
reaction with ethanol 70% presence
  absent
reaction with FeSO4 presence
  absent
reaction with formol 40% presence
  absent
reaction with guaiac presence
  absent
reaction with KOH 10% presence
  absent
reaction with lactic acid presence
  absent
reaction with Melzer's reagent presence
  absent
reaction with phenole presence
  absent
reaction with phenole-aniline presence
  absent
reaction with ruthenium-red presence
  absent
reaction with sudan III presence
  absent
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
  Fagus
plant habitat kind
  forests, woods

Fungus

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

Remarks

public notes
  Cell walls of middle mantle layer hyphae slightly thick; autofluorescence of rhizomorphs with UV-filter showing central hyphae bluish and surrounding hyphae pale ochre; distance of nuclei variable.

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