Bryoparasitic Pezizales

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 Bryophile Pezizales > Species > Octospora rubens


Octospora rubens (Boud.) M. M. Moser
in Gams, Kleine Kryptogamenflora, Edn 3 (Stuttgart) 2a: 111 (1963)

Basionym: Humaria rubens Boud., Bull. Soc. mycol. Fr. 12: 13 (1896)
Holotype: Septembre plurimis annis reperi ad terram argilloso-sabulosam ad latera viarum sylvæ. Montmorency. (MNHN-PC)
Octospora rubens, apothecium Octospora rubens, ascus with ascospores
1: Octospora rubens, apothecium with Ceratodon purpureus. Image by Marcel Vega. 2: Octospora rubens, ascus with ascospores
Apothecia: 1-3 mm in diameter, hymenium deep-red, tomato-red, deep-salmon-red, usually with conspicuous membranaceous margin
Paraphyses: apically with large granular, pigmented content
Asci: 200-280 x 13-19 µm, 8-spored, spores uniseriate
Ascospores: ellipsoid, (14-)15-18(-20) x 10-12(-14) µm, smooth
Host: Ceratodon purpureus
Habitat: on sandy soil, especially in dry grassland and dry heathland
Distribution: scattered in Germany (BB, HH, MV, RP, SH, TH), also known from many European countries, Finland, France, United States
Note: O. rubens and O. rustica have indistinguishable spores and also share the same host, Ceratodon purpureus. The best distinguishing features are the color of the apothecia (reddish to pinkish in O. rubens, orange in O. rustica) and the paraphyses (with many vacuoles and orange granules in O. rubens without such pigmentet granules in O. rustica, see Fig. 3)


References:
  • Benkert, D. 1995. Becherlinge als Moosparasiten. - Boletus 19: 97-127.
  • 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.
  • Billekens, P. 1992. Octospora rubens and Octospora rustica in The Netherlands (Pyronemataceae, Ascomycota). - Persoonia 15: 55-62.
  • Boudier, M. E. 1896. Quelques nouvelles espèces de Discomycètes de France. - Bulletin de la Société mycologique de France 12: 11-17, pl. 3,4. [as Humaria rubens]
  • Boudier, E. 1905-1910. Icones mycologicae ou iconographie des champignons de France principalement Discomycetes. - Paris: Klincksieck.
  • Brouwer, E. 1999. Mosschijfjes (Lamprospora en Octospora): voorkomen en verspeiding in Nederland. - Coolia 42: 2-20.
  • Caillet, M. & Moyne, G. 1987a. Contribution a l'étude du genre Octospora Hedw. ex S.F. Gray (Pezizales), Espèces à spores elliptiques ou fusiformes. - Bulletin de la Société Mycologique de France 103: 179-226.
  • Dennis, R. W. G. & Itzerott, H. 1973. Octospora and Inermisia in Western Europe. - Kew Bulletin 28: 5-23.
  • Eckstein, J., Eckstein G., Frauenberger, H. & Wieschollek, D. 2020. Erste Checkliste der Moosbecherlinge Thüringens. - Boletus 41: 51-64.
  • Itzerott, H. & Döbbeler, P. 1982. Octospora meslinii und O. rubens (Pezizales), zwei weitere bryophile Gallenbildner. - Mitteilungen der Botanischen Staatssammlung München 18: 201-212.
  • Krieglsteiner, L. 2004. Pilze im Biosphären-Reservat Rhön und ihre Einbindung in die Vegetation. - Regensburger Mykologische Schriften 12: 1-770.
  • Ribollet, P. 2015. Contribution a? la connaissance des genres Octospora Hedw. 1789 et Lamprospora De Not. 1864 en Loire-Atlantique. - Cahiers Mycologiques Nantais 27: 3-12. PDF
  • Rubio, E., Suárez, A. & Miranda, M. A. 2000. El genero Octospora Hedw.:S.F. Gray (Ascomycetes, Pezizales) en Asturias y Leon. - Bol. Soc. Micol. Madrid 25: 111-126.
  • Svrček, M. 1979. A taxonomic revision of Velenovsky's types of operculate discomycetes (Pezizales) preserved in National Museum, Prague. - Sborník Národního Muzea v Praze 32B: 115-194.
  • Vega, M. 2017. Vorläufige Checkliste der in Hamburg vorkommenden Moosbecher-Arten aus den Gattungen Lamprospora, Neottiella, Octospora und Octosporopsis. - Boletus 38: 27-33.
Images:
Paraphyses Octospora rubens
3: Paraphyses of Octospora rubens (left) and Octospora rustica (right) 4: Octospora rubens, ascus with ascospores

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