W.F. Leong, Botanica Marina 33: 511 (1990)


Sordariomycetes, Subclass Hypocreomycetidae






Payosphaeria W.F. Leong, Botanica Marina 33: 511 (1990)

Type species:

Payosphaeria minuta W.F. Leong, 1990. Bot. Mar., 33: 511.

Sexual morph: saprobic, Ascomata: 119-206 µm high, 115-182 µm wide, globose to flask-shaped, superficial on natural substrate, papillate, ostiolate, membranous, hyaline, subhyaline to yellowish brown and solitary to gregarious. Necks: 43.4-146.5 µm long, 24-55 µm wide, conical to elongate, cylindrical, and subhyaline to yellowish brown. Peridium: 8 um thick, 1-3 layered and composed of thin-walled elongate cells. Paraphyses: 1-1.5 µm thick, few, branched, septate and hyaline. Asci: 46-72 x 5-8 µm, 8-spored, cylindrical, pedunculate, uni-tunicate, thin-walled and developing at the base of the ascomata. Ascospores: 6-10 x 4-6 µm, 1-seriate, globose to pyriform, 1-celled, hyaline, thin-walled, smooth without appendages or gelatinous sheath, with 1 to 4 conspicuous refractive globules in the centre or at the apices of each spore. Asexual morph: Undetermined (Description based on Leong et al. (1990)). 


Key references:

Chinnaraj S (1993) Manglicolous fungi from Atolls Maldives, Indian Ocean. Indian Journal of Marine Sciences 22: 141-1422.

Leong WF, Tan TK, Hyde KD, Jones EBG (1990) Payosphaeria minuta gen. et sp. nov., an ascomycete on mangrove wood. Botanica Marina. 33:511-514.

Leong WF, Tan TK, Jones EBG (1991) Fungal colonization of submerged Bruguiera cylindrica and Rhizophora apiculata wood. Botanica Marina 34: 69-76.

Raveendran K, Manimohan P (2007) Marine fungi of Kerala. Malabar Natural History Soc. 1-270, Kerala, India.

Tan TK, Leong WF, Jones EBG (1989) Succession of fungi on wood of Avicennia alba and A. lanata in Singapore. Canadian Journal Botany 67: 2686-2691.


Type & Location:
Other Specimens:
saprobic on intertidal mangrove wood, blocks and drift wood.
(Andaman and Nicobar Islands, Lakshadweep Islands) India, Indonesia, Hawaii, Malaysia, Maldives, Singapore.
Pertinent Literature:
NOTES: This species was first collected on mangrove wood samples exposed at Mandai mangrove, in Singapore and also collected on driftwood (Leong et al. 1990, 1991, Tan 1989). It has also been collected variously in Indian coastal waters (Chinnaraj 1993, Raveendran & Manimohan 2007). Payosphaeria minuta was collected on both submerged test blocks of the mangrove trees (6 collections), A. lanata (20 collections), Rhizophora apiculata (8 collections) and driftwood, all at Mandai mangrove, Singapore (Leong et al. 1990, 1991). All collections made in India, were on mangrove wood (Chinnaraj 1993).The taxonomic position of Payosphaeria minuta is not resolved and further collections, isolations and sequence data are required.


Mushroom Research Foundation 
Chiang Rai 


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