Consortium of Lichen Herbaria - Naevia punctiformis

Naevia punctiformis (Ach.) A. Massal. (redirected from: Arthonia punctiformis Ach.)
Family: Arthoniaceae [Arthonia astroidea f. fraxinea Bagl., more] Andrew Khitsun	North Carolina Biodiversity Project Resources North Carolina Biodiversity Project MB#395831 TYPE. SWEDEN. Anonymous s.n., s.d. (H-ACH 32A, lectotype selected by Sundin & Tehler (1998); S F71422, lectotype; UPS-ACH, isotype). Description. Non-lichenized, allied fungus. Thallus crustose, endophloeodal, indistinct or slightly “bleaching” the bark to whitish. Photobiont absent. Ascomata arthonioid apothecia (irregular – lirelliform, +/- branched), immersed to erumpent, 0.1-0.8 x 0.1 mm; thickness 30-60 μm; disk black, epruinose, +/- convex; exciple olivaceous brown, 5-10 μm; hyphae olivaceous brown, smooth, c. 2 μm thick. Epithecium olivaceous brown, 5-10 μm, K+ pale green; hymenium hyaline, 30-40 μm; paraphysoids richly branched, apices thickened with brown caps; hypothecium hyaline, up to 10 μm. Asci broadly ovoid, without distinct stipe; ascus wall not laterally thickened; tholus without horizontal layers, 20-30 x 14-20 μm. Ascospores narrowly ovoid, straight, persistently hyaline and smooth, 3-5-septate, not macrocephalic, 13-23 x 4-7 μm, gelatinous sheath absent. Chemistry. Thallus I-, K/I+ blue; hymenial gel I+ blue, K/I+ blue; no lichen substances detected by TLC. Substrate and Habitat. Corticolous on trees, where it is a pioneer, sun-loving species on young trunks and twigs of hardwoods. Distribution. Widespread throughout Europe and North America; in North Carolina the species is represented by a single historical record [1886, Eckfeldt s.n., (US 01031907)] from the Blue Ridge ecoregion. Naevia punctiformis appears to be overlooked in the state. Literature Acharius, E. (1808) Förteckning på de i Sverige våxande arter af Lafvarnas Familj. Kongliga Vetenskaps Academiens Nya Handlingar 29:125-132 (original description as Arthonia punctiformis). Cannon, P., D. Ertz, A. Frisch, A. Aptroot, S. Chambers, B. Coppins, N. Sanderson, J. Simkin & P. Woseley. (2020). Arthoniales: Arthoniaceae. Revisions to the British and Irish Lichens 1: 1-48. Fink, B. (1935) The Lichen Flora of the United States. University of Michigan Press, Ann Arbor. 426 pp (as Arthonia punctiformis). Sundin, R. & A. Tehler. (1998) Phylogenetic studies of the genus Arthonia. The Lichenologist 30(4-5): 381-413 (description as Arthonia punctiformis). Thiyagaraja, V., Lücking, R., Ertz, D. et al. (2020) Evolution of non-lichenized, saprotrophic species of Arthonia (Ascomycota, Arthoniales) and resurrection of Naevia, with notes on Mycoporum. Fungal Diversity 102: 205–224.
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