Bryoparasitic Pezizales

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Octospora pseudoampezzana (Svrček) Caillet & Moyne
Bull. Trimest. Soc. Mycol. Fr. 103(3): 180 (1987)

Basionym: Lachnea pseudoampezzana Sverček in Acta Mus. Nat Prag. 4 B(6) (Bot. 1): 29 (1948)

Type: Czech Republic, 'Zadní Kopanina prope Radotín (Bohemia centralis), inter muscos ad lapidem calcareum in nemore calido' 15-Feb-1948, Svrček h. myc. 29/ 48 (PRM?).

Octospora pseudoampezzana, apothecia between shoots of Schistidium crassipilum Octospora pseudoampezzana, ascus with ascospores
1: Octospora pseudoampezzana, apothecia between shoots of Schistidium crassipilum 2: Octospora pseudoampezzana, ascus with ascospores
Apothecia: 1-4 mm in diameter, margin somewhat pubescent first whitish and later becoming black, hymenium brownish-orange
Paraphyses: apically slightly curved
Asci: 8-spored, spores uniseriate
Ascospores: ellipsoid, 20-22 x 14.5-16 µm with one large oil droplet, ornamentation consisting of isolated warts
Host: Schistidium crassipilum rarely Racomitrium heterostichum (Eckstein et al. 2020)
Infectious structures: induces galls on the rhizoids, galls usually completely covered with hyphae
Habitat: in open habitats on limestone boulders at the base of Schistidium-tufts
Distribution: Austria, Czech Republic (Janošík unpublished), Germany (rare, BY, NI, TH), Hungary, Slovakia (Janošík unpublished), Spain, Sweden (Isaksson 2022)
Note:  The collections on Racomitrium heterostichum may represent a separate taxon.

References:
  • Benkert, D. 1998a. Beiträge zur Kenntnis bryophiler Pezizales-Arten. 6. Wrightoideae, eine neue Sektion der Gattung Octospora. - Zeitschrift für Mykologie 64: 17-40. [key]
  • 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.
  • 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.
  • 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., 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. [ut Octospora meslinii]
  • Isaksson, R. 2022. Mossparatiserande skålsvampar i släktena Lamprospora, Octospora och Octosporella nya för Sverige. - Svensk Mykologisk Tidskrift 43: 16–29.
  • 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
  • Medardi G. 2006. Non fimicolous arctic-alpine Ascomycetes collected in Austria 1. - Österreichische Zeitschrift für Pilzkunde 15: 21–29.  PDF
  • Németh C., Eckstein J. & Sochor M. 2022. Disentangling the taxonomy of Octospora meslinii (Pezizales), a bryophilous ascomycete on Grimmia pulvinata. - Czech Mycology 74: 1–24.. 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.
  • Rubio, E. & Miranda, M. A. 2006. Estudios micológicos en el Parque Natural de Somiedo (Asturias). II Campaña. Ascomycota. - Boletín de la Sociedad Micológica de Madrid 30: 49–72.
  • Svrček, M. 1948. České druhy podčeledi Lachneoideae (čel. Pezizaceae) - Bohemian species of Pezizaceae subf. Lachneoidea. - Acta Musei Nationalis Praguae IV. B No. 6: 1–95, pl. I-XII.
  • Svrček, M. 1969. Nové rody operkuláních diskomycetu (Pezizales). 23: 83-96. [ut Hiemsia pseudoampezzana]
Images:
Octospora pseudoampezzana, ascus with ascospores Octospora pseudoampezzana, SEM-image of ascospore
3: Octospora pseudoampezzana, asci with ascospores 4: Octospora pseudoampezzana, SEM-image of ascospore, Germany, Lower Saxony, Göttingen, leg. J. Eckstein 2014-01-05, no. 34609

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