G.K. Sutherl., Transactions of the British Mycological Society 5: 149 (1915)


Sordariomycetes, Subclass Hypocreomycetidae






Trailia G.K. Sutherl., Transactions of the British Mycological Society 5: 149 (1915)

Type and marine species:

Trailia ascophylli G.K. Sutherl., Transactions of the British Mycological Society 5: 149 (1915)

Index Fungorum Number:227271                          Faceoffungi Number:N/A

Parasitic on marine brown seaweeds, sexual morph: Mycelium localised, hyaline, septate. Perithecia grouped irregularly in blackened regions of thallus, spherical or club-shaped, 50-60 (-159) µm. in diam., with long narrow straight or bent cylindrical beak (140-) 300-450 x 7.5-10.5 (-19) µm. Perithecial wall thin, soft, and white. Paraphyses absent. Asci cylindrical and curved, unitunicate, thin-walled, 8-spored, 45-50 (-55) x 9-10 9-12) µm, without apical apparatus. Paraphyses absent. Ascospores filamentous, tapering from 90-110 µm long, 3-4 µm at broad end to 1 µm at narrow end, hyaline, 3-4- septate, twice the length of ascus and, consequently, bent double and coiled.

Description after Sutherland 1915, Kohlmeyer & Kohlmeyer 1979.


Key references:

Kohlmeyer J, Kohlmeyer E (1979). Marine mycology. The higher fungi. Academic Press, New York, 690 p.

Sutherland GK (1914). New marine pyrenomycetes. Transactions of the British Mycological Society, 5: 147–155.

Webber FC (1959). Marine fungi. PhD Theses, University of Wales.

Wijayawardene NN, Hyde KD, Rajeshkumar KC, Hawksowrth DL, Madrid H et al. (2017). Notes for genera: Ascomycota. Fungal Diversity 86: 1–594.

Wilson IM (1951). Notes on marine fungi on wood. Transactions of the British Mycological Society,34: 540–543.

Type & Location:
Other Specimens:
Parasitic on thallus of Ascophyllum nodosum and Fucus sp.
UK (Wales, Scotland), US
Pertinent Literature:
Description after Sutherland 1915, Kohlmeyer & Kohlmeyer 1979.
NOTES: Sutherland observed this fungus for the “first time in Orkney during the summer and early autumn of 1914 and found occurring in great abundance on the thallus of Ascophyllum nodosum just to the outside of the Pelvetia zone on the flat rocks. He also found it on free–floating masses in the North Sea, while Kohlmeyer & Kohlmeyer (1979) report ascospores in foam around plants of A. nodosum. Both Wilson (1951) and Webber (1959) reported it on A. nodosum in Wales, at the Aberystwyth college rocks. Webber (1959) gives an account of the release of the ascospores: they are released passively into the centrum cavity and remain bent, followed by the broad apical region of the spore entering the long neck, becoming straight, and released through the neck opening into the surrounding water, where they resume their curved nature. There are no cultures or sequence data for this ascomycete so its placement in the Halsphariaceae is based on morphology. Another species that requires recollecting and sequencing to confirm its taxonomic placement. Wiyayawardene et al. (2017) accept its placement in the Halosphaeriaceae.


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