Scutula

Genus of fungi From Wikipedia, the free encyclopedia

Scutula is a genus of lichenicolous fungi in the family Ramalinaceae.

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Scutula
Scientific classification
Kingdom:	Fungi
Division:	Ascomycota
Class:	Lecanoromycetes
Order:	Lecanorales
Family:	Ramalinaceae
Genus:	Scutula Tul. (1852)
Type species
Scutula wallrothii Tul. (1852)
Synonyms^[1]
Hollosia Gyeln. (1939)

Taxonomy

The genus Scutula was circumscribed by French botanist Louis René Étienne Tulasne in 1862.^[2] The limits of the generic circumscription as well as the limits of certain species in Scutula was confused for a long time.^[3]^[4]^[5]^[6] In 1997, Triebel and colleagues applied the name Scutula specifically to a group of species growing on hosts of the Lecanorales suborder Peltigerineae, a monophyletic grouping of cyanobacteria-associated lichens.^[7] Before this, Scutula was applied to a diverse set of unrelated lichenicolous fungi featuring hyaline spores with a single septum and sessile apothecia.^[8]

Once classified in the family Micareaceae, molecular phylogenetic analysis showed Scutula to be nested within the Ramalinaceae, closely related to the genus Toninia.^[9] This familial placement has been accepted in recent large-scale updates of fungal classifications.^[10]^[11]^[12]

Description

Scutula species are characterized by apothecia that are either lecideine (where exciple forms the underside and outer layer of the apothecium, extending up to the rim, where it forms a darkened "proper margin") or biatorine (having a pale, not darkened proper margin and always lacking a thalline margin). The paraphyses are non-capitate (i.e., lacking a knob-like structure at the tip). Asci have a fuzzy amyloid (in Lugol's iodine solution after pre-treatment with KOH) axial tube structure of the ‘Scutula’-type. The ascospores are smooth, hyaline, and contain a single septum. Anamorphs associated with Scutula include Libertiella in the mesoconidia and Karsteniomyces in the macroconidia.^[8]

Species

Scutula aggregata Bagl. & Carestia (1889)
Scutula circumspecta (Nyl. ex Vain.) Kistenich, Timdal, Bendiksby & S.Ekman (2018)
Scutula curvispora (D.Hawksw. & Miadl.) Diederich (2018)
Scutula dedicata Triebel, Wedin & Rambold (1997)^[7]
Scutula didymospora (D.Hawksw. & Miadl.) Diederich (2018)
Scutula effusa (Auersw. ex Rabenh.) Kistenich, Timdal, Bendiksby & S.Ekman (2018)
Scutula epiblastematica (Wallr.) Rehm (1890)
Scutula heeri (Hepp ex A.Massal.) P. Karst. (1885)
Scutula krempelhuberi Körb. (1865)
Scutula miliaris (Wallr.) P.Karst. (1853)
Scutula nephromatis (Speg.) Etayo (2008)
Scutula pseudocyphellariae Etayo & Triebel (2010)^[13]
Scutula solorinaria (Nyl.) P.Karst. (1885)
Scutula stereocaulorum (Anzi) Körb. (1865)
Scutula tuberculosa (Th.Fr.) Rehm (1906)
Scutula wallrothii Tul. (1852)

References

[1]
"Synonymy: Scutula Tul". Species Fungorum. Retrieved May 10, 2010.
[2]
Tulasne, L.-R. (1852). "Mémoire pour servir à l'histoire organographique et physiologique des Lichens". Annales des Sciences Naturelles Botanique. Série 3 (in French). 17: 118.
[3]
Santesson, R. (1960). "Lichenicolous fungi from northern Spain". Svensk Botanisk Tidskrift. 54 (4): 499–522.
[4]
Hawksworth, D.L. (1986). "Notes on British lichenicolous fungi: V". Notes from the Royal Botanic Garden, Edinburgh. 43 (3): 497–519.
[5]
Hawksworth, D.L. (2000). "Notes on some fungi occurring on Peltigera, with a key to accepted species". Transactions of the British Mycological Society. 74 (2): 363–386. doi:10.1016/S0007-1536(80)80167-7.
[6]
Hawksworth, D.L. (2003). "The lichenicolous fungi of Great Britain and Ireland: an overview and annotated checklist". The Lichenologist. 35 (3): 191–232. doi:10.1016/S0024-2829(03)00027-6.
[7]
Triebel, D.; Wedin, M.; Rambold, G. (1997). "The genus Scutula (lichenicolous ascomycetes, Lecanorales): species on the Peltigera canina and P. horizontalis groups". Symbolae Botanicae Upsalienses. 32 (1): 323–337.
[8]
Wedin, Mats; Ihlen, Per G.; Triebel, Dagmar (2007). "Scutula tuberculosa, the correct name of the Scutula growing on Solorina spp., with a key to Scutula s. str. in the Northern Hemisphere". The Lichenologist. 39 (4): 329–333. doi:10.1017/S0024282907006949.
[9]
Andersen, Heidi L.; Ekman, Stefan (2005). "Disintegration of the Micareaceae (lichenized Ascomycota)—a molecular phylogeny based on mitochondrial rDNA sequences". Mycological Research. 109 (1): 21–30. doi:10.1017/S0953756204001625. PMID 15736860.
[10]
Lücking, Robert; Hodkinson, Brendan P.; Leavitt, Steven D. (2017). "The 2016 classification of lichenized fungi in the Ascomycota and Basidiomycota–Approaching one thousand genera". The Bryologist. 119 (4): 361–416. doi:10.1639/0007-2745-119.4.361.
[11]
Wijayawardene, Nalin N.; Hyde, Kevin D.; Lumbsch, H. Thorsten; Liu, Jian Kui; Maharachchikumbura, Sajeewa S. N.; Ekanayaka, Anusha H.; Tian, Qing; Phookamsak, Rungtiwa (2018). "Outline of Ascomycota: 2017". Fungal Diversity. 88 (1): 167–263. doi:10.1007/s13225-018-0394-8.
[12]
Wijayawardene, Nalin; Hyde, Kevin; LKT, Al-Ani; S, Dolatabadi; Stadler, Marc; Haelewaters, Danny; Tsurykau, Andrei; Mesic, Armin; Navathe, Sudhir; Papp, Viktor; Oliveira Fiuza, Patrícia; Vázquez, Víctor; Gautam, Ajay; Becerra, Alejandra G.; Ekanayaka, Anusha; K. C., Rajeshkumar; Bezerra, Jadson; Matočec, Neven; Maharachchikumbura, Sajeewa; Suetrong, Satinee (2020). "Outline of Fungi and fungus-like taxa". Mycosphere. 11: 1060–1456. doi:10.5943/mycosphere/11/1/8. hdl:10481/61998.
[13]
Etayo, J.; Triebel, D. (2010). "New and interesting lichenicolous fungi at the Botanische Staatssammlung München". The Lichenologist. 42 (3): 231–240. doi:10.1017/S0024282909990417.

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