Kohlm., 1971. Ber. Dtsch. Bot. Ges., 83: 505


Phylum Ascomycota


Sordariales incertae sedis



Abyssomyces Kohlm., Berichte der Deutschen Botanischen Gesellschaft 83: 505 (1971)

Abyssomyces hydrozoicus Kohlm., 1971. Ber. Dtsch. Bot. Ges., 83: 505. Saprobic Ascomata: 130-155 µm high, excluding necks, 135-155 µm in diam, solitary, subglobose to pyriform, superficial, ostiolate, periphysate, papillate, coriaceous, light brown, setose, paraphyses absent. Necks: 95-120 x 40-55 µm, subconical to cylindraical, periphysate. Peridium: 12-20 µm thick, 3-layered; on the outside a crustose, brown, non-cellular layer; middle layer of truncate to ellipsoidal cells, hyaline, forming setae; inner layer of flattened cells, hyaline. Setae: 8-60 µm long, 3.5-5 µm in diam at the base, 2-2.5 µm at the apex, subuliform, 0-1-septate. Paraphyses: absent. Asci: 60-90 x 6-9 µm, 8-spored, subcylindrical to fusiform, short pedunculate, unitunicate, thin-walled, developing at the base of the ascomata venter. Ascospores: 18-20 x 3.5-4 µm, biseriate, sub-cylindrical, 3-septate, straight or slightly curved, not constricted at the septa, hyaline, appendages at each end, sometimes surrounded by a mucous cover; appendages 0.5-1 µm in diam, hyaline, semiglobose, cap-like, terminal (Description based on Kohlmeyer & Kohlmeyer (1979and 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.

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 (1971) Eine neuer Ascomycet auf Hydrozoen im Südatlantik. Berichte der Deutschen Botanischen Gesellschaft 83: 505-509.

Kohlmeyer J, Kohlmeyer E (1979) Marine Mycology The Higher F

Type & Location:
Other Specimens:
Parasitic or saprobic on chitinous hydrorhiza and hydrocaulon of hydrozoa attached to stony rocks, and on deep sea sediments in the Arabian sea.
Orkney Islands, UK; Goa, India.
Pertinent Literature:
NOTES: Abyssomyces hydrozoicus is a rare marine ascomycete known from only 2-3 collections (Kohlmeyer 1971, Raghukumar, & Raghukumar,1998). The species has not been cultured and recollection isolation and sequencing is required to determine its taxonomic position within the Ascomycota. Jones et al. (2015) refer the species to Sordariales incertae sedis based on morphological features.


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