Riessiella clavata 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
  loosely short-spiny
or    densely long-spiny
Morphology of rhizomorphs
colour
  black
or    dark brown

Anatomy

Anatomical features of the entire mycorrhiza
emanating elements presence-type
  rhizomorphs
or    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
mantle type
  hyphae arranged net-like, with prominent cystidia (type D)
hyphal system kind
  undifferentiated
cell pigment location-colour
  membranaceously brownish
cell diameter
4 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)
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
  plectenchymatous
Anatomy of the inner mantle layer
organisation
  plectenchymatous
hyphae arrangement
  with broad streaks of parallel hyphae
cell pigment location-colour
  membranaceously yellowish
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)
or    capitate (type N)
septa presence
  present
septa kind
  with intercalary clamps
diameter {proximal}
4 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)
diameter {distal}
8 µm    Lower value of unspecified range (could be µ-s.d., but not known)
14 µm    Upper value of unspecified range (could be µ+s.d., but not known)
length
50 µm    Lower value of unspecified range (could be µ-s.d., but not known)
120 µm    Upper value of unspecified range (could be µ+s.d., but not known)
cell wall colour
  brownish
cell wall evenness
  even in thickness
surface habit
  smooth

Anatomy of emanating hyphae






Anatomy of rhizomorphs
type
  undifferentiated; hyphae rather loosely woven and of uniform diameter
(type A)
or    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

Ecology

geographic occurrence continent
  Asia

Tree

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

Remarks

public notes
  Mycorrizal ends dark brown to black; rhizomorphs dark brown to black; cystidia with a terminal yellowish to subhyaline, broadly clavate, smooth cell; emanating hyphae with clamps; rhizomorphs are described as undifferentiated with clamps (Lee et al. 1997); Hartig net lacking.

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