Bryoparasitic Pezizales

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Octospora gemmicola Benkert
Östereichische Zeitschrift für Pilzkunde 7: 49 (1998)
Octospora gemmicola, apothecia between shoots of Bryum dichotomum Octospora gemmicola, ascus with ascospores
1: Octospora gemmicola, apothecia between shoots of Bryum dichotomum 2: Octospora gemmicola, ascus with ascospores
Apothecia: (0.5-)1-2 mm in diameter with a weak membranaceous margin, hymenium plane to cupulate, orange
Paraphyses: apically slightly curved
Asci: 160-250 x 16-22 µm, 8-spored, spores mostly biseriate
Ascospores: narrowly ellipsoid to subfusiform, (17-)19-23(-26) x 8.5-10.5 µm, smooth, one to three large and several small oil droplets
Hosts: most frequently Bryum ruderale but also Bryum dichotomum, Bryum radiculosum, Bryum rubens, Bryum subapiculatum
Infectious structures: infects rhizoids, rhizoid gemmae, stems and rarely leafs, appressoria free or covered by accompanying hyphae
Habitat: in open habitats on disturbed soil with pioneer bryophytes
Distribution: common in Germany (BB, HH, MV, NI, NW, ST, SH, TH) also known from France, The Netherlands, Norway, Slovakia, United Kingdom

References:
  • Benkert, D. 1998c. Beiträge zur Kenntnis bryophiler Pezizales-Arten. 8. Viersporige Taxa der Gattung Octospora. - Österreichische Zeitschrift für Pilzkunde. [New series] 7: 39-63.
  • Benkert, D. 2007. Zur Kenntnis des Vorkommens bryophiler Pezizales (Ascomycota) in Südost-Europa. - Mycologia Montenegrina 10: 7-21.
  • 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.
  • 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)
  • Kristiansen, R. 2006. Miniatyrbegersopper nye for Norge. - Agarica 26: 69-77.
Images:
Octospora gemmicola, apothecia on soil between shoots of Bryum dichotomum
3: Octospora gemmicola, apothecia on soil between shoots of Bryum dichotomum

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