(Kohlm.) K.L. Pang and E.B.G. Jones, Mycol. Progr. 9: 549 (2010)


Sordariomycetes, Subclass Lulworthiomycetidae





Synonymy: ≡ Cirrenalia pygmea Kohlm., Ber. Drsch. Bot. Ges. 79: 35, 1966.

Hydea K.L. Pang and E.B.G. Jones, Mycol. Progr. 9: 549 (2010)

Type species:

Hydea pygmea (Kohlm.) K.L. Pang and E.B.G. Jones, Mycol. Progr. 9: 549 (2010)

≡ Cirrenalia pygmea Kohlm., Ber. Drsch. Bot. Ges. 79: 35, 1966.

Asexual morph: saprobic, hyphae 2.2-4.5 µm in diameter, septate, ramose, fuscous. Conidiophores obsolete. Conidia acrogenous, solitary, helicoid, contorted I or 1 time coiled, 3-4-septate, not or slightly constricted at the septa, fist-shaped or reniform, black or fuscous, fulgent (upper three cells dark, lower two or three cells light-colored); cells increasing in diameter from base to apex, distinctly dissimilar; spirals 25.5-31×28.5-34 µm; terminal cell 16.5-23 µm in diameter, subglobose to reniform, basally flattened; basal cells 3.5-5.5 µm in diameter; central cells irregularly conical or almost wedge-shaped. Sexual morph: Undetermined (Description based on Kohlmeyer and Kohlmeyer (1979)).


Key references:

Abdel-Wahab MA, Pang KL, Nagahama T, Abdel-Aziz F, Jones EBG (2010) Phylogenetic evaluation of anamorphic species of Cirrenalia and Cumulospora with the description of eight new genera and four new species. Mycological Progress 9:537–558.

based on morphological and molecular data. Mycologia 95: 530-552.

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.

Kohlmeyer J, Kohlmeyer E (1979) Marine Mycology: The higher fungi. Academic Press.

Maharachchikumbura SSN, Hyde KD, Jones EBG, Mckenzie EHC, Huang SK, Abdel-Wahab MA et al. (2015) Towards a natural classification and backbone tree for Sordariomycetes. Fungal Diversity 72: 199-299.


Type & Location:
Other Specimens:
Decayed driftwood in the intertidal zone, especially on mangrove wood.
Brazil, Brunei, China, Fiji, Hong Kong, India, Liberia, Malaysia, Maldives, Seychelles, Mauritius, Mexico, Sierra Leone, Singapore, Sri Lanka, Sumatra, Thailand, Trinidad.
Pertinent Literature:
NOTES: Hydea pygmea is a common species on mangrove wood, especially Rhizophora species, growing on the bark, with slow growth in culture but sporulating readily. The fungus differs from all other Cirrenalia-like species by the dark-brown to black hooked nature of the conidia. Hydea pygmea is characterized by internal proliferation of the conidia (Kohlmeyer & Kohlmeyer 1979). Sequence data placed Cirrenalia pymea in the Lulworthiaceae (Abdel-Wahab et al. 2010) with the introduction of a new genus Hydea to accommodate it as it did not belong in the Cirrenalia clade. The genus is accepted as a member of the Luloworthiaceae (Luloworthiales) in the subclass Lulworthiomycetidae by Jones et al. (2015) and Maharachchikumbura et al. (2015).


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