Bryoparasitic Pezizales

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Octospora rustica (Velen.) J. Moravec
Ceská Mykol. 23: 226 (1969)

Basionym: Humaria rustica Velen., Monogr. Discom. Bohem. (Prague): 327 (1934)
Type: Czech Republic, 'Bohemia centr., Mnichovice, infra "Zbuzany", in carbonario 18-Aug-1930, leg. Velenovski (lectotype PRM 151016) [as Humaria rustica var. cinnabarinc Velen., nom. nud. in herb. et litt.]
Octospora rustica Octospora rustica, asci with ascospores
1: Octospora rustica, apothecium between shoots of Ceratodon purpureus 2 :Octospora rustica, asci with ascospores
Apothecia: 1-3(-4) mm in diameter, hymenium orange, pale-orange, without a membranaceous margin
Asci: 140-210 x 14-19 µm, 8-spored, spores uniseriate
Ascospores: ellipsoid, (15)16-18(20) x 10-12(13) µm, smooth or delicately rugose
Host: Ceratodon purpureus
Infectious structures: infects the rhizoids
Habitat: on soil with pioneer mosses, in base-poor habitats
Distribution: Belgium (De Meulder 1994), Czech Republic, Estonia, Finland, France, Germany (common, BY, BE, BB, HH, MV, SN, ST, TH), Greenland (Dissing 1982), Sweden (Isaksson 2022), United Kingdom
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.
  • 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.
  • Caillet, M. & Moyne, G. 1991. Clé de détermination du genre Octospora et des genres voisins. - Bulletin de la Société d'Histoire Naturelle du Doubs 84: 9-24.
  • De Meulder, H. 1994. De geslachten Octospora Hedwig ex SF Gray en Lamprospora de Not. in België. - Sterbeeckia 16: 9–25.
  • Dennis, R. W. G. & Itzerott, H. 1973. Octospora and Inermisia in Western Europe. - Kew Bulletin 28: 5-23.
  • Dissing, H. 1982. Operculate Discomycetes(Pezizales) from Greenland. - Arctic and Alpine Mycology: First International Symposium on Arctic-Alpine Mycology, Seattle and London.
  • Döbbeler, P. & Itzerott, H. 1981. Zur Biologie von Octospora libussae und O. humosa, zwei im Moosprotonema wachsende Pezizales. - Nova Hedwigia 34: 127-136. [ut Octospora libussae]
  • Eckstein, J., Eckstein G., Frauenberger, H. & Wieschollek, D. 2020. Erste Checkliste der Moosbecherlinge Thüringens. - Boletus 41: 51-64.
  • Engel, H. & Hanff, B. 1985. In Nordwestoberfranken gefundene Arten der Gattung Octospora Hedwig ex S. F. Gray. - Die Pilzflora Nordwestoberfrankens 9/A: 3-20.
  • Isaksson, R. 2022. Mossparatiserande skålsvampar i släktena Lamprospora, Octospora och Octosporella nya för Sverige. - Svensk Mykologisk Tidskrift 43: 16–29.
  • Itzerott, H. 1981. Die Gattung Octospora mit besonderer Berücksichtigung der Pfälzer Arten. - Nova Hedwigia 34: 265-280.
  • Itzerott, H. 1983b. Octospora rustica, ein parasitischer Brandstellenbewohner. - Agarica 4: 115-120.
  • Janošík, L., Sochorová, Z., Eckstein, J., Vega, M. & Koukol, O. 2023. Ascospore morphology of bryophilous Pezizales is closely associated with the place of infection and host ecology. - Fungal Ecology 61: 101200. DOI
  • 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. 1962. Neottiella vivida (Nyl.) Dennis. - Česká Mykologie 16: 115-116. [ut Octospora libussae]
  • 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 rustica
3: Paraphyses of Octospora rubens (left) and Octospora rustica (right) 4: Octospora rustica, asci with ascospores

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