Buelliella

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Buelliella
Buelliella trypethelii 247212889.jpg
Buelliella trypethelii
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Fungi
Division: Ascomycota
Class: Dothideomycetes
Order: Asterinales
Family: Stictographaceae
Genus: Buelliella
Fink (1935)
Type species
Buelliella minimula
(Tuck.) Fink (1935)

Buelliella is a genus of lichenicolous (lichen-dwelling) fungi in the family Stictographaceae. It comprises 13 thirteen species. [1] The genus was established in 1935 by the American lichenologist Bruce Fink, who originally included seven species. These fungi are parasites that live on other lichens, producing small disc-shaped fruiting bodies that start buried in their host and later emerge at the surface.

Contents

Taxonomy

The genus was originally circumscribed by the American lichenologist Bruce Fink in 1935. He included seven species in his original concept of the genus. [2] Fink did not specify a type species for the genus; Josef Hafellner assigned B. minimula as the type in 1979. [3]

Description

Buelliella is a lichen-inhabiting (lichenicolous) genus that produces no independent thallus of its own. Its fruiting bodies (ascomata) begin as more-or-less spherical, closed structures embedded in the host; as they mature, the upper wall splits irregularly and flakes away, eventually leaving a shallow, disc-like apothecium that sits on the surface. The surrounding rim ( exciple ) is medium to dark brown and usually shows no reaction to the potassium hydroxide spot test (K–). The spore-bearing layer (hymenium) is either unreactive in iodine (K/I–) or stains a faint pale blue. [4]

Within each ascoma the tissue between the asci ( hamathecium ) consists of paraphysoids that may branch or fuse together; their tips are slightly swollen and often tinged brown. Short, few-celled periphyses arise from the inner exciple. The asci are fissitunicate —double-walled structures that broaden like a club to a short cylinder—and have a thickened apex with a distinct ocular chamber ; they do not stain in iodine and usually contain eight spores. The resulting ascospores are smooth, ellipsoidal, single-septate, pale to medium brown, and slightly constricted at the septum. No asexual stage (anamorph) has been observed for the genus. [4]

Species

As of July 2025, Species Fungorum (in the Catalogue of Life) accepts 13 species of Buelliella: [5]

References

  1. ↑ Hyde, K.D.; Noorabadi, M.T.; Thiyagaraja, V.; He, M.Q.; Johnston, P.R.; Wijesinghe, S.N.; et al. (2024). "The 2024 Outline of Fungi and fungus-like taxa". Mycosphere. 15 (1): 5146–6239 [5218]. doi:10.5943/mycosphere/15/1/25. hdl: 1854/LU-8660838 .
  2. ↑ Fink, Bruce (1935). The Lichen Flora of the United States. Ann Arbor: University of Michigan Press. p. 372.
  3. 1 2 Hafellner, J. (1979). "Karschia. Revision einer Sammelgattung an der Grenze von lichenisierten und nichtlichenisierten Ascomyceten". Beihefte zur Nova Hedwigia (in German). 62: 155.
  4. 1 2 Cannon, P.; Coppins, B.; Aptroot, A.; Sanderson, N.; Simkin, J. (2025). Miscellaneous lichens and lichenicolous fungi, including Aphanopsis and Steinia (Aphanopsidaceae), Arthrorhaphis (Arthrorhaphidaceae), Buelliella, Hemigrapha, Melaspileella, Stictographa and Taeniolella (Asterinales, family unassigned), Phylloblastia (Chaetothyriales, family unassigned) Cystocoleus (Cystocoleaceae), Sclerococcum (Dactylosporaceae), Eiglera (Eigleraceae), Epigloea (Epigloeaceae), Euopsis (Harpidiaceae), Lichenothelia (Lichenotheliaceae), Lichinodium (Lichinodiaceae), Melaspilea (Melaspileaceae), Epithamnolia and Mniaecia (Mniaeciaceae), Lichenostigma (Phaeococcomycetaceae), Pycnora (Pycnoraceae), Racodium (Racodiaceae), Chicitaea and Loxospora (Sarrameanaceae), Schaereria (Schaereriaceae), Strangospora (Strangosporaceae), Botryolepraria and Stigmidium (Verrucariales, family unassigned), and Biatoridium, Mycoglaena, Orphniospora, Piccolia, Psammina and Wadeana (order and family unassigned). Revisions of British and Irish Lichens. Vol. 57. p. 4.
  5. ↑ "Buelliella". Catalogue of Life . Species 2000: Leiden, the Netherlands. Retrieved 26 March 2025.
  6. ↑ Etayo, Javier (2002). Aportación al conocimiento de los hongos liquenícolas de Colombia. Bibliotheca Lichenologica. Vol. 84. Berlin/Stuttgart: J. Cramer. p. 33. ISBN   978-3-443-58063-6.
  7. ↑ Aptroot, André; Diederich, Paul; Sérusiaux, Emmanuel; Sipman, Harrie J.M. (1997). Lichens and lichenicolous fungi from New Guinea. Bibliotheca Lichenologica. Vol. 64. Berlin/Stuttgart: J. Cramer. p. 36. ISBN   978-3-443-58043-8.
  8. ↑ Singh, P.; Singh, K.P. (2019). "Buelliella indica (Dothideomycetes), a new lichenicolous species from India". Acta Botanica Hungarica. 61 (3–4): 435–439. doi:10.1556/034.61.2019.3-4.12.
  9. ↑ Suija, Ave; Alstrup, Vagn (2004). "Buelliella lecanorae, a new lichenicolous fungus". The Lichenologist. 36 (3–4): 203–206. Bibcode:2004ThLic..36..203S. doi:10.1017/s0024282904014239.
  10. ↑ Zhurbenko, Mikhail P.; Ohmura, Yoshihito (2020). "Contributions to the knowledge of lichenicolous fungi growing on baeomycetoid lichens and Icmadophila, with a key to the species". The Lichenologist. 52 (6): 437–453. Bibcode:2020ThLic..52..437Z. doi:10.1017/S002428292000047X.
  11. ↑ Pérez-Ortega, Sergio; Etayo, Javier (2010). "Labrocarpon gen. nov. for Melaspilea canariensis, with the description of Buelliella protoparmeliopsis sp. nov. from South America". The Lichenologist. 42 (3): 271–276. Bibcode:2010ThLic..42..271P. doi:10.1017/S0024282909990624.
  12. ↑ Hafellner, J. (1985). "Studen über lichenicole Pilze und Flechten IV. Die auf Brigantiaea-Arten beobachteten Ascomyceten" [Studies on lichenophilic fungi and lichens IV. The ascomycetes observed on Brigantiaea species]. Herzogia (in German). 7 (1–2): 163–180. Bibcode:1985Herz....7..163H. doi:10.1127/herzogia/7/1985/163.
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