Phacopsis thallicola

Phacopsis thallicola is a species of lichenicolous (lichen-dwelling) fungus in the family Parmeliaceae. It was first formally described as a new species in 1852 by Italian botanist Abramo Bartolommeo Massalongo, as Lecidea thallicola. The type specimen, collected from the province of Treviso in Italy, was growing on the foliose lichen Parmelia caperata (now known as Flavoparmelia caperata).[3] Dagmar Triebel and Gerhard Walter Rambold transferred the taxon to the genus Phacopsis in 1988.[4] The known generic hosts of Phacopsis thallicola are all in the Parmeliaceae: Parmotrema, Cetrelia, Flavopunctelia, and Hypotrachyna.[5]

Phacopsis thallicola
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Parmeliaceae
Genus: Phacopsis
Species:
P. thallicola
Binomial name
Phacopsis thallicola
(A.Massal.) Triebel & Rambold (1988)
Synonyms[1][2]
  • Lecidea thallicola A.Massal. (1852)
  • Scutula massalongiana Trevis. (1856)
  • Scutula thallicola (A.Massal.) Anzi (1860)
  • Abrothallus curreyi Linds (1866)
  • Mycoblastus thallicola (A.Massal.) Trevis. (1869)
  • Nesolechia thallicola (A.Massal.) Rehm (1890)

Some historical synonyms of Phacopsis thallicola have resulted from proposed taxonomic transfers from its original genus Lecidea to the genera Scutula, Mycoblastus, and Nesolechia.[1] Abrothallus curreyi, first reported by William Lauder Lindsay from New Zealand in 1866, is a synonym of Phacopsis thallicola.[2][5]

Characteristics of Phacopsis thallicola include its dark-brown hypothecium (the area of tissue in the apothecium immediately below the subhymenium), and the mostly sessile, marginate apothecia. Its ascospores are typically 8–11 by 5–6.5 μm. Its pycnidia are spherical and measure about 120 μm; they are immersed in the thallus of the host. Pycnospores have a bacilliform shape and dimensions of 7 by 1 μm. The fungus has been recorded from Italy, Java, New Zealand (as Abrothallus curreyi), and the United States.[2]

References
  1. "GSD Species Synonymy. Current Name: Phacopsis thallicola (A. Massal.) Triebel & Rambold, Nova Hedwigia 47(3-4): 304 (1988)". Species Fungorum. Retrieved 23 July 2022.
  2. Triebel, Dagmar; Rambold, Gerhard; Elix, John A. (1995). "A conspectus of the genus Phacopsis (Lecanorales)". The Bryologist. 98 (1): 71–83. doi:10.2307/3243643. JSTOR 3243643.
  3. Massalongo, Abramo Bartolommeo (1852). Ricerche sull'autonomia dei licheni crostosi (in Latin). Verona: Dalla tipografia di A. Frizierio. p. 78.
  4. Triebel, D.; Rambold, G. (1988). "Cecidonia und Phacopsis (Lecanorales): zwei lichenicole Pilzgattungen mit cecidogenen Arten" [Cecidonia and Phacopsis (Lecanorales): two lichenicolous fungus genera with cecidogenic species]. Nova Hedwigia (in German). 47 (3–4): 279–309.
  5. Diederich, Paul; Lawrey, James D.; Ertz, Damien (2018). "The 2018 classification and checklist of lichenicolous fungi, with 2000 non-lichenized, obligately lichenicolous taxa". The Bryologist. 121 (3): 340–425. doi:10.1639/0007-2745-121.3.340. S2CID 92396850.
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