• Source: Athallia

Athallia is a genus of lichen-forming fungi in the family Teloschistaceae. It was circumscribed in 2013 by Ulf Arup, Patrik Frödén, and Ulrik Søchting, and the type species is Athallia holocarpa. The genus name means "without a thallus".




Description


Most species in Athallia have a poorly developed thallus, with the exception of A. scopularis. In A. scopularis, the thallus is well-developed and lobate, meaning it has a lobed structure. The cortex, which is the outer layer of the thallus, is typically an amorphous layer or made up of indistinctly organized tissue (indistinctly paraplectenchymatous), a tissue structure previously referred to as "alveolate" by Vondrák et al. in 2009. In A. scopularis, however, the cortex consists of hyphae (fungal filaments) that are arranged anticlinally, meaning they run perpendicular to the surface.
Athallia vitellinula is atypical in the genus for having a conspicuous thallus, but it is usually very thin. The apothecia (fruiting bodies) in Athallia are mainly zeorine, which means they lack a thalline margin. The spores produced are polardiblastic, meaning they are divided into two components (locules) separated by a central septum with a perforation. Pycnidia, which are small, flask-shaped structures producing asexual spores (conidia), are typically orange in Athallia, but they are often absent. The conidia, when present, are ellipsoid in shape.
All Athallia lichens have a suite of secondary metabolites (lichen products) corresponding to the chemosyndrome A as previously elaborated by Søchting.




Species


As of January 2024, Species Fungorum (in the Catalogue of Life) accept 11 species of Athallia:

Athallia alnetorum (Giralt, Nimis & Poelt) Arup, Frödén & Søchting (2013)
Athallia brachyspora (Mereschk.) Halıcı & Vondrák (2016)
Athallia cerinella (Nyl.) Arup, Frödén & Søchting (2013)
Athallia cerinelloides (Erichsen) Arup, Frödén & Søchting (2013)
Athallia holocarpa (Hoffm.) Arup, Frödén & Søchting (2013)
Athallia inconnexa (Nyl.) S.Y.Kondr. & L.Lokos (2018)
Athallia pyracea (Ach.) Arup, Frödén & Søchting (2013)
Athallia saxifragarum (Poelt) Arup, Frödén & Søchting (2013)
Athallia scopularis (Nyl.) Arup, Frödén & Søchting (2013)
Athallia vitellinula (Nyl.) Arup, Frödén & Søchting (2013)




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References

Kata Kunci Pencarian:

• Athallia
• Athallia scopularis
• Athallia holocarpa
• Caloplaca nothoholocarpa
• Coppinsiella
• Calogaya orientalis
• Peccania tiruncula
• Teloschistaceae
• Lignicolous lichen
• Flavoplaca oasis