Bryoparasitic Pezizales

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Octospora ithacaensis (Rehm) K. B. Khare
Norwegian Journal of Botany 22: 111 (1975)

Basionym: Humaria ithacaensis Rehm, Ann. mycol. 2: 35 (1904)
Octospora ithacaensis Octospora ithacaensis, ascospore
1: Octospora ithacaensis, apothecia on thallus of Marchantia polymorpha 2: Octospora ithacaensis, ascospores stained with cotton blue, Czech Republic, Zlínský kraj, leg. Zuzana Egertova 2014-10-25
Apothecia: to 1.5 mm in diameter, without membranaceous margin, hymenium orange
Asci: 200 x 14-20 µm, 8-spored, spores uni- sometimes biseriate
Ascospores: ellipsoid, 18-22 x 9-11 µm, ornamentation consisting of isolated warts 0.5-1 µm broad and less than 0.5 µm high, spores mostly with 2 oil droplets
Host: Marchantia polymorpha
Infectious structures: infects the rhizoids and the gemmea
Habitat: apothecia solitary or in groups of 2-4 on the thallus of Marchantia polymorpha, in shaded and moist habitats, in plant pots, so far mostly found in man made habitats such as gardens, road sides
Distribution: rare in Germany (BE, BW, MV, ST), Czech Republic, Denmark, The Netherlands, Spain, Switzerland, United States


References:
  • Benkert, D. 1998a. Beiträge zur Kenntnis bryophiler Pezizales-Arten. 6. Wrightoideae, eine neue Sektion der Gattung Octospora. - Zeitschrift für Mykologie 64: 17-40.
  • Benkert, D. 1998b. Beiträge zur Kenntnis bryophiler Pezizales-Arten. 7. Octospora ithacaensis. - Zeitschrift für Mykologie 64: 41-44.
  • Benkert, D. 2009. Zwei neue Arten bryophiler Pezizales (Ascomycota) aus der Bundesrepublik Deutschland und Auflistung der aus Deutschland bisher nachgewiesenen Arten mit Kurzdiagnostik. - Zeitschrift für Mykologie 75: 51-68.
  • Benkert, D. & Brouwer, E. 2004. New species of Octospora and some further remarkable bryoparasitic Pezizales from the Netherlands. - Persoonia 18: 381-391.
  • Döbbeler, P. 1979. Untersuchungen an moosparasitischen Pezizales aus der Verwandtschaft von Octospora. - Nova Hedwigia 31: 817-864.
  • Eckstein, J. & Eckstein, G. 2009. Bryoparasitische Pezizales (Ascomycetes) der Gattungen Lamprospora, Octospora und Neottiella im Alten Botanischen Garten von Göttingen. - Herzogia 22: 213-228. PDF (abstract only)
  • Eckstein, J. & Eckstein, G. 2013. Bemerkenswerte Funde bryoparasitischer Pezizales (Ascomycota) aus Deutschland. - Boletus 34: 55-66.
  • Egertova, Z., Eckstein, J. & Vega, M. 2015. Lamprospora tuberculata, Octospora ithacaensis, O. orthotrichi and O. affinis - four bryoparasitic ascomycetes new to the Czech Republic. - Czech Mycology 67 (2): 119-133. PDF from Czech Mycology
  • Khare, K. B. & Tewari, V. P. 1975. The genus Octospora and its typification. - Mycologia 67: 972-979.
  • Moyne, G., Moingeon, J. M. & Van Vooren, N. 2017. Octospora ithacaensis (Pezizales), espèce nouvelle pour la Franche-Comté. - Bulletin mycologique et botanique Dauphiné-Savoie 224: 33-36.
  • Petersen, J. H. 2012. Octospora ithacaensis in Mykokey. URL: http://www.mycokey.org/speciesindex/17778/language=uk /LocalLanguage=uk - 23.02.2012.
  • Rehm, H. 1904. Ascomycetes Americae borealis. - Annales Mycologici 2: 32-37.
  • Rubio D. E. 2011. Neottiella ithacaensis (Rehm) Schweers. Asturnatura.com [en línea] Num. 339:2, 25/09/2011. ISSN 1887-5068. URL: http://www.asturnatura.com/especie/neottiella-ithacaensis.html - 24.02.2012.
  • Schweers, A. C. S. 1945. Neottiella ithacaensis Rehm n. c. - Revue de mycologie 10: 69-72.
Images:
Octospora ithacaensis Octospora ithacaensis, ascospore
1: Octospora ithacaensis, ascospores, Czech Republic, Zlínský kraj, leg. Zuzana Egertova 2014-10-25 2: Octospora ithacaensis, SEM-image of ascospore, Czech Republic, Zlínský kraj, leg. Zuzana Egertova 2014-10-25

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