Orcadia (fungus)

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Orcadia
Orcadia ascophylli.png
First illustration of Orcadia ascophylli by Sutherland in 1914
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Pezizomycetes
Order: Pezizales
Genus: Orcadia
G.K. Sutherland 1914
Species

Orcadia is a genus of marine parasitic ascomycete fungi described in 1914 by Geo. K. Sutherland, [1] classified initially as a member of the Hypocreales within the Pyrenomycetes. [2] Its taxonomic position is uncertain, although it is currently placed in the order Pezizales, in the class Pezizomycetes. [3]

Contents

Description

Orcadia is characterized by an absence of stromata; perithecia entirely immersed in the thallus of their host through a long tapering beak; soft, white walls of perithecia that never become black; cylindrical or clavate asci, containing 8 septate spores; and the presence of paraphyses. [1]

Distribution

The species O. ascophylli was originally described from the Orkney Islands (Scotland). [1] It is also common at Aberystwyth (Wales), where it parasites on old worn thalli of Ascophyllum nodosum . [4] The species O. pelvetiana is found in Orkney and Clare Island, where it parasites Pelvetia canaliculata . [2]

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References

  1. 1 2 3 Sutherland GK (1914). "New marine pyrenomycetes: Plate III". Transactions of the British Mycological Society. 5: 147–155. doi:10.1016/S0007-1536(14)80015-6.
  2. 1 2 Meyers SP (1957). "Taxonomy of Marine Pyrenomycetes". Mycologia. 49 (4): 475–528. doi:10.1080/00275514.1957.12024666.
  3. Wijayawardene, N.N.; Hyde, K.D.; Dai, D.Q.; Sánchez-García, M.; Goto, B.T.; Saxena, R.K.; et al. (2022). "Outline of Fungi and fungus-like taxa – 2021". Mycosphere. 13 (1): 53–453. doi: 10.5943/mycosphere/13/1/2 . hdl: 10481/76378 . S2CID   249054641.
  4. Wilson IM (1951). "Notes on some marine fungi". Transactions of the British Mycological Society. 34 (4): 540–543. doi:10.1016/S0007-1536(51)80039-1.