Fungalpedia – Note 456, Melarthonis
Melarthonis Frisch & G. Thor
Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, Lichenicolous fungi.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Chrysotrichaceae, Arthoniales, Arthoniomycetidae, Arthoniomycetes, Pezizomycotina, Ascomycota, Fungi.
Frisch et al. (2014) was introduced Melarthonis with Melarthonis piceae as the type species as a monospecific genus of Chrysotrichaceae. Melarthonis can be diagnosed due to their pale greenish, minutely granular thallus, sparse; photobiont chlorococcoid, in small groups enclosed by mycobiont hyphae; ascomata black, adnate, strongly convex, rounded; proper exciple and epithecium dark brown; hymenium hyaline, conglutinated; filaments branched and anastomosed, the tips densely intertwined, with dark pigment; Arthonia-type asci, eight spored, lacking hemiamyloid tholus structures and narrow obovoid to spindle-shaped spores, hyaline, three septate, epispore thin; dark brown epithecium, formed of the densely interwoven tips of the internal filaments while, pycnidia was not observed (Frisch et al. 2014). However, this genus was a registration identifier cited in the protologue (MycoBank 80877) but was not issued for the name published (Art. F.5.6).
Type species: Melarthonis piceae Frisch & G. Thor
Other accepted species: This genus is monotypic.
Figure 1 – Melarthonis piceae (Thor 25995, UPS). a Habitate. b Section through apothecium. c Margin of apothecium. d Thallus granules. Scale bars: a = 1 mm, b = 50 μm, c = 40 μm, d = 30 μm. Redrawn from Frisch et al. (2014).
Reference
Entry by
Priyashantha AKH, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
(Edited by Saowaluck Tibpromma, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)
Published online 2 December 2024