K.D. Hyde & E.B.G. Jones, 1992. Mycol. Res., 96


Sordariomycetes, Subclass Xylariomycetidae





Pedumispora K.D. Hyde & E.B.G. Jones, 1992. Mycol. Res., 96: 78.

Type species:

Pedumispora rhizophorae K.D. Hyde & E.B.G. Jones, 1992. Mycol. Res., 96:

Sexual morph: saprobic, Pseudostroma: up to 130 µm thick, brown to black, covering the wood surface and enclosing elements of wood, with erumpent pustules containing 1-4 immersed ascomata, central region containing 1-4 short necks. Ascomata: 560-720 µm high, 660-1040 µm wide, brown to black, subglobose, coriaceous, ostiolate, papillate, sparse pseudostromatic tissues surrounding each ascoma. Necks: collectively erumpent and united, up to 320 µm wide, with periphyses. Peridium: 100-165 µm thick, an inner hyaline layer of elongate cells and an outer layer composed of melanized thick-walled hyphae forming a textura epidermioidea, incorporating host cells, the outside fusing with the host tissue. Paraphyses: 3-8 um thick, filiform and simple. Asci: 200-265 x 17-26 µm, 8-spored, irregularly fusiform, pedunculate, uni-tunicate, thin-walled, apically truncate without an apical apparatus. Ascospores: 160-240 x 5-7 µm, filiform, tapering towards both ends, curved with a characteristic hook-shape at one end, 13-17-septate, not constricted at the septa, with 7-9 longitudinal striations running the length of the spore, tips 15-30 x 1.5-2 µm, lacking cytoplasm, slightly inflated and yellow-yellowish brown. Asexual morph: Undetermined (Description based on Hyde & Jones (1992) and Borse et al. (2012)).


Key references:

Borse BD, Bhat DJ, Borse KN, Tuwas AR, Pawar NS (2012) Marine Fungi of India. Broadway Book Centre, India.   

Hyde KD, Jones. EBG (1992) Intertidal mangrove fungi: Pedumispora gen. -nov. (Diaporthales). Mycol. Res. 96: 78-80.

Jones EBG, Sakayaroj J, Sueterong S, Somrithipol A, Pang KL (2009) Classification of marine Ascomycota, anamorphic taxa and Basidiomycota. Fungal Divers 35: 1-187.

Jones EBG, Suetrong S, Sakayaroj J, Bahkali AH, Abdel-Wahab MA, Boekhout T, Pang KL (2015) Classification of marine Ascomycota, Basidiomycota, Blastocladiomycota and Chytridiomycota. Fungal Diversity 73: 1-72.

A Klaysuban, Sakayaroj J, Jones EBG (2014) An additional marine fungal lineage in the Diatrypaceae, Xylariales: Pedumispora rhizophorae. Botanica Marina 57(5): 413-320.

Sakayaroj J (2005) Phylogenetic relationships of marine Ascomycota. Ph.D. Thesis, Prince of Songkla University, Thailand.

Sarma VV, Vittal BPR (2004) Manglicolous fungi recorded from Godavary and Krishna deltas, A.P. East coast of India along with dichotomous key and notes on some taxa. Kavaka 32: 65-111.



Type & Location:
Other Specimens:
saprobic, on submerged mangrove wood, prop roots of Rhizophora apiculata.
Guam, Micronesia, India, Seychelles, Thailand.
Pertinent Literature:
NOTES: It was originally collected from decayed intertidal prop roots and twigs of Rhizophora apiculata from Ranong mangrove, southern Thailand (Hyde & Jones 1992). Other collections were made on R. mucronata from Seychelles (Hyde & Jones 1992) and mangrove wood from Guam, Micronesia (USA) (Sakayaroj 2005). Many collections have been made on mangrove substrates in India (Sarma & Vittal 2004, see also references in Borse et al. 2012). Hyde & Jones (1992) referred P. rhizophorae to the Melanconidaceae, Diaporthales, as it shares some similarity with the genera Prosthecium and Winterella. The preliminary phylogenetic study based on partial large subunit (LSU) rDNA of the strain obtained from Guam, Micronesia revealed that P. rhizophorae had an affinity with the Xylariales, and in particular with the Diatrypaceae (Sakayaroj 2005, Jones et al. 2009). However, a subsequent study confirmed its placement in the Diatrypaceae (Xykariales) based on a molecular phylogenetic study of LSU and ITS rDNA regions (Klaysuban et al. 2014) and accepted by Jones et al. (2015).


Mushroom Research Foundation 
Chiang Rai 


Sueggestions for improvement of the webiste, corrections or additions should be send to:

Gareth Jones: Email:

Mark Calabon: Email: