Riessia radicicola Jülich + Shorea

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Literature

references
  Jülich W (1985) Fungi associated with Dipterocarpaceae in southeast Asia. 1. The genera Riessia and Riessiella. Int J Mycol Lichenol 2(1): 123-140.
Lee LS, Alexander IJ, Watling R (1997) Ectomycorrhizas and putative ectomycorrhizal fungi of Shorea leprosula Miq. (Dipterocarpaceae). Mycorrhiza 7(2): 63-81.

Morphology

Morphology of the mycorrhizal system
ramification presence-type
  monopodial-pinnate
Morphology of the unramified ends
colour
  black
or    dark brown
mantle surface {in general} habit
  not smooth
mantle surface {in detail} kind
  densely long-spiny
Morphology of rhizomorphs
colour
  black
or    dark brown

Anatomy

Anatomical features of the entire mycorrhiza
emanating elements presence-type
  cystidia
emanating elements cystidia location
  on outer mantle layer
Anatomy of laticifers
presence
  absent
Anatomical features of the mantle
Anatomy of the outer mantle layer apart from the ectormycorrhizal tip
organisation
  plectenchymatous
and    pseudoparenchymatous
mantle type
  hyphae arranged net-like, with prominent cystidia (type D)
septa thickness {relative to cell walls}
  as thick as walls
cell pigment location-colour
  membranaceously brownish
cell diameter
4 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)
cell wall thickness
0.2 µm    Lower value of unspecified range (could be µ-s.d., but not known)
0.8 µm    Upper value of unspecified range (could be µ+s.d., but not known)
cell wall surface habit
  smooth
Anatomy of the middle mantle layer
organisation
  pseudoparenchymatous
cell diameter
0 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 wall surface habit
  smooth
Anatomy of the mantle in longitudinal section
mantle thickness {apart from tip}
15 µm    Lower value of unspecified range (could be µ-s.d., but not known)
30 µm    Upper value of unspecified range (could be µ+s.d., but not known)



Anatomy of the mantle in cross-section



Anatomy of the emanating elements in general
Anatomy of cystidia

Anatomy of cystidia (type 1)
type
  bristle-like with an apical knob, gloeocystidia (type H)
septa presence
  present
septa kind
  simple
diameter {proximal}
2.5 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)
diameter {distal}
10 µm    Lower value of unspecified range (could be µ-s.d., but not known)
15 µm    Upper value of unspecified range (could be µ+s.d., but not known)
length
80 µm    Lower value of unspecified range (could be µ-s.d., but not known)
100 µm    Upper value of unspecified range (could be µ+s.d., but not known)
cell wall colour
  brownish
cell wall colour {relative to mantle cells}
  similar
or    lacking or less intense
cell wall thickness {relative to mantle cells}
  similar in thickness
cell wall evenness
  even in thickness
surface habit
  smooth

Anatomy of emanating hyphae
cell pigment location-colour
  membranaceously brownish


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
  smooth
or    without lens-shaped appositions
or    with lens-shaped appositions


Anatomy of rhizomorphs

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

Ecology

geographic occurrence continent
  Asia

Tree

plant family
  Dipterocarpaceae
plant genus
  Shorea
plant habitat kind
  forests, woods

Remarks

public notes
  Mycorrhizal ends dark brown to black; rhizomorphs dark brown to black; cystidia with an apical lobate knob, lobes (2-)3-4(-5) in number and slightly thick-walled, with either homogeneous or somewhat guttulate cytoplasm; rhizomorphs are described as undifferentiated with simple septa (Lee et al. 1997); Hartig net lacking.

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