Topeliopsis

Topeliopsis
Scientific classification Edit this classification
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Graphidales
Family: Graphidaceae
Genus: Topeliopsis
Kantvilas & Vězda (2000)
Type species
Topeliopsis muscicola
Kantvilas & Vězda (2000)

Topeliopsis is a genus of lichen-forming fungi in the family Graphidaceae.

Taxonomy

The genus Topeliopsis was established in 2000 by the lichenologists Gintaras Kantvilas and Antonín Vězda as part of their studies on the lichen family Thelotremataceae in Tasmania. The genus name, which contains the Greek "-opsis", alludes to its superficial resemblance to the lichen genus Topelia.[1]

Topeliopsis was created to accommodate those members of Thelotremataceae that possess certain distinctive characteristics:[1]

  • sessile or somewhat immersed apothecia (the disc-shaped reproductive structures)
  • perithecioid growth form (flask-shaped structures that open by a small pore)
  • cupular excipulum (a cup-like structure surrounding the reproductive tissue)
  • deeply urceolate disc (a deeply concave, pitcher-shaped reproductive surface)
  • markedly thickened young asci (the sac-like structures containing spores)
  • large, thin-walled, muriform ascospores that turn reddish in iodine

The genus is closely related to both Chroodiscus and Pseudoramonia, but differs from Chroodiscus by having a concave disc rather than a plane one, and by possessing a cupular (cup-shaped) rather than ring-like excipulum. While Pseudoramonia shares the perithecioid apothecia with a cupular excipulum, it differs by having stipitate (stalked) apothecia and transversely septate spores that do not react with iodine.[1]

When first circumscribed, Topeliopsis included three species:[1]

  • T. muscicola (the type species) – endemic to Tasmania and New Zealand
  • T. rugosa – endemic to Tasmania
  • T. toensbargii – found in the Pacific Northwest of North America

Species

References

  1. ^ a b c d Kantvilas, G.; Vězda, A. (2000). "Studies on the lichen family Thelotremataceae in Tasmania. The genus Chroodiscus and its relatives". The Lichenologist. 32 (4): 325–357. doi:10.1006/lich.2000.0274.
  2. ^ a b c d Kalb, K. (2001). "The lichen genus Topeliopsis in Australia and remarks on Australian Thelotremataceae". Mycotaxon. 79: 319–328.
  3. ^ a b c Lumbsch, H.T.; Divakar, P.K.; Messuti, M.I.; Mangold, A.; Lücking, R. (2010). "A survey of thelotremoid lichens (Ostropales, Ascomycota) in Subantarctic regions excluding Tasmania". The Lichenologist. 42 (2): 203–224. doi:10.1017/S002428290999048X.
  4. ^ Coppins, B.J.; Aptroot, A. (2008). "New species and combinations in The Lichens of the British Isles". The Lichenologist. 40 (5): 363–374. doi:10.1017/S0024282908008165.
  5. ^ a b c Frisch, A.; Kalb, K. (2006). "The lichen genus Topeliopsis, additions and corrections". The Lichenologist. 38 (1): 37–45. doi:10.1017/S0024282905005530.
  6. ^ Kantvilas, Gintaras (2020). "Tasmanian chroodiscoid thelotremoid lichens (Graphidaceae) revisited". Phytotaxa. 459 (3): 209–218. doi:10.11646/phytotaxa.459.3.2.
  7. ^ a b c Rivas Plata, E.; Lücking, R.; Sipman, H.J.M.; Kalb, K.; Lumbsch, H.T. (2010). "A world-wide key to the thelotremoid Graphidaceae, excluding the Ocellularia-Myriotrema-Stegobolus clade". The Lichenologist. 42 (2): 139–185. doi:10.1017/S0024282909990491.
  8. ^ van den Boom, P.P.G.; Lücking, R.; Sipman, H.J.M. (2023). "Notes on Graphidaceae in Macaronesia, with descriptions of four new species". Diversity. 15 (7): e817. doi:10.3390/d15070817.
  9. ^ a b Mangold, A.; Elix, J.A.; Lumbsch, H.T. (2009). "Thelotremataceae". Lichens 5. Flora of Australia. Vol. 57. Australian Biological Resources Study/CSIRO Publishing. pp. 653–659. ISBN 978-0-643-09664-6.
  10. ^ Messuti, M.I.; Codesal, P.L.; Mangold, A.; Lücking, R.; Lumbsch, H.T. (2010). "New or interesting Chapsa and Topeliopsis species (Ascomycota, Ostropales) from Argentina". The Lichenologist. 42 (2): 191–195. doi:10.1017/S0024282909990399.
  11. ^ Weerakoon, Gothamie; Jayalal, Udeni; Wijesundara, Siril; Karunaratne, Veranja; Lücking, Robert (2015). "Six new Graphidaceae (lichenized Ascomycota: Ostropales) from Horton Plains National Park, Sri Lanka". Nova Hedwigia. 101 (1–2): 77–88. doi:10.1127/nova_hedwigia/2015/0241.

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