Lactarius deliciosus L. : Fr. var. areolatus Smith + Abies

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Literature

references
  Kernaghan G, Currah RS, Bayer RJ (1997) Russulaceous ectomycorrhizae of Abies lasiocarpa and Picea engelmannii. Can J Bot 75: 1843-1850.

Morphology

Morphology of the mycorrhizal system
ramification presence-type
  monopodial-pinnate
rhizomorphs presence
  present
rhizomorphs frequency
  infrequent
Morphology of the unramified ends
colour
  orange
or    green
older parts colour
  green
mantle {distinct} surface visibility
  present
mantle surface {in general} habit
  smooth
emanating hyphae presence
  present
emanating hyphae abundance
  infrequent
Morphology of rhizomorphs
diameter
0.15 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    green

Anatomy

Anatomical features of the entire mycorrhiza
emanating elements presence-type
  rhizomorphs
Anatomy of laticifers
presence
  absent
or    present
location
  middle mantle layer
cell length
4 µm    Lower value of unspecified range (could be µ-s.d., but not known)
10 µm    Upper value of unspecified range (could be µ+s.d., but not known)
cell diameter
3.5 µm    Lower value of unspecified range (could be µ-s.d., but not known)
7 µm    Upper value of unspecified range (could be µ+s.d., but not known)
Anatomical features of the mantle
Anatomy of the outer mantle layer apart from the ectormycorrhizal tip
organisation
  plectenchymatous
hyphal system kind
  with broad streaks of parallel hyphae
hyphae hyphal junctions angle {between}
  ca. 90°
and    ca. 120°
cell diameter
3 µm    Lower value of unspecified range (could be µ-s.d., but not known)
4.5 µm    Upper value of unspecified range (could be µ+s.d., but not known)
Anatomy of the inner mantle layer
organisation
  plectenchymatous
cell diameter
4.5 µm    Lower value of unspecified range (could be µ-s.d., but not known)
5.5 µm    Upper value of unspecified range (could be µ+s.d., but not known)
Anatomy of the mantle in longitudinal section



Anatomy of the mantle in cross-section



Anatomy of the emanating elements in general
Anatomy of cystidia


Anatomy of emanating hyphae


Anatomy of the septa of emanating hyphae
clamps presence
  absent


Anatomy of the cells of emanating hyphae
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 of rhizomorphs
type
  undifferentiated; margins rather smooth; hyphae compactly arranged and of uniform diameter
(type B)

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

Chemical reactions

reaction with sulpho-vanillin presence
  present

Ecology

geographic occurrence continent
  North America

Tree

plant family
  Pinaceae
plant genus
  Abies
plant habitat kind
  forests, woods

Fungus

family
  Russulaceae
subgenus-section
  Lactarius sect. Dapetes
fruitbodies growth habit
  epigeous
or    pileate-lamellate

Remarks

public notes
  Mycorrhizal ends pale orange, becoming green where bruised; rhizomorphs pale yellow, but soon becoming green; laticifer contents separated by wall material every 4-10 um; rhizomorph hyphae wider at surface of larger rhizomorphs; mantle in sulfo-vanillin with greenish laticifers.

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