Agaricales » Marasmiaceae » Moniliophthora

Moniliophthora roreri

Moniliophthora roreri (Cif.) H.C. Evans, Stalpers, Samson & Benny 1978, in Evans et al., Canadian Journal of Botany,56(20), 2528-2532 (1978).

Diagnosis: Growth on malt extract agar slow, colony attaining a diameter of 8-15 mm after 2 weeks. Margin appressed to slightly raised, even. Mat typically woolly to felty, at first Pale Ochraceous Salmon or Pinkish Buff, finally becoming Cinnamon Buff to Clay Colour or locally Wood Brown to Apricot Buff (Ridgway 1912). Occasionally the mat is initially downy to farinaceous, white to cream colour, or with ochraceous tinges. Odour indistinct. Reverse unchanged. Laccase and tyrosinase present. Advancing zone: hyphae hyaline, thin walled, septate, sometimes slightly irregular with swellings, 1.5-5 µm wide. Aerial hyphae of two types: (a) as in advancing zone but with slightly thickened walls, and (b) hyaline to pale brownish, thick walled, nonseptate, (1-)1.5-2(-3) µm wide, skeletoid, rarely branched. Conidiophore branched, giving rise to a basipetally maturing chain of conidia. Conidia easily separable, thick walled, pale yellow, brown coloured en masse, typically globose to subglobose (6.5-)8-15(-25) µm diam, sometimes ellipsoid 8-20 x 5-14 µm, wall up to 2 µm thick. Cylindrical thin-walled conidia also occur, probably derived from immature chains. Submerged hyphae as in the advancing zone, but swellings more frequent. One strain formed chlamydospores or chlamydosporelike swellings. Crystals present, tetragonal. Teleomorph3 not formed.

The fungus also grows and sporulates well on sterilized, woody liana stems resulting in significant weight loss of the substrate. Compact, cream-coloured clumps of sterile mycelium with yellow exudate droplets are frequently formed and red- purple patches, composed of heavily incrusted red hyphae, occur in old cultures. Growth temperatures are optimum 25-26°C, maximum 33°C.

Index Fungorum Number: IF317823

Figure 1. Moniliophthora roreri, conidial structures.


Figures 2-7. Moniliophtllora roreri. Figures 2-6. SEM micrographs of various conidial structures showing basipetal chains of conidia. Figure 2. x 1900. Figure 3. x 2700. Figure 4. x 1400. Figure 5. x 4100. Figure 6. x 2600. Figure 7. TEM micrograph showing dolipore septum in the vegetative hyphae. x 60000.


Qin, W. M., Wu, F., & Zhou, L. W. (2016). Donkioporiella mellea gen. et sp. nov.(Polyporales, Basidiomycota) from Guangxi, China. Cryptogamie, Mycologie, 37(4), 437-447.


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