Abstract
Arthonia rubrocincta morphologically and anatomically fits the generic concept of Coniocarpon and is here transferred to the latter genus as Coniocarpon rubrocinctum. Specimens from southeastern United States and Bahamas were studied and the range of the species is found to extend north into North Carolina, USA and southeast to the Bahamas. Thatch palm (Coccothrinax argentata) is reported as a new phorophyte. An emended description based on examined material is presented for the species.
References
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<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Thiyagaraja, V., Lücking, R., Ertz, D., Wanasinghe, D.N., Karunarathna, S.C., Camporesi, E. & Hyde, K.D. (2020) Evolution of non‐lichenized, saprotrophic species of <em>Arthonia</em> (<em>Ascomycota</em>, <em>Arthoniales</em>) and resurrection of <em>Naevia</em>, with notes on <em>Mycoporum</em>. <em>Fungal Diversity </em>102: 205–224. https://doi.org/10.1007/s13225-020-00451-9 </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (eds.) (2018) <em>International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017.</em> Regnum Vegetabile 159. Glashütten: Koeltz Botanical Books. https://doi.org/10.12705/Code.2018</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Frisch, A., Thor, G., Ertz, D. & Grube, M. (2014) The Arthonialean challenge: restructuring <em>Arthoniaceae</em>. <em>Taxon</em> 63 (4): 727–744. https://doi.org/10.12705/634.20 </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Frisch, A., Grube, M., Kashiwadani, H. & Ohmura, Y. (2018) <em>Arthoniaceae</em> with reddish, K+ purple ascomata in Japan. <em>Phytotaxa</em> 356 (1): 19–33. https://doi.org/10.11646/phytotaxa.356.1.2 </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Govaerts, R. & Dransfield, J. (2005) <em>World Checklist of Palms.</em> Richmond: Royal Botanic Gardens Kew.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Grube, M. & Lendemer, J.C. (2009) <em>Arthonia rubrocincta</em>: belated validation of a name for a common species endemic to <em>Sabal palmetto</em> in the southeastern United States. <em>Opuscula Philolichenum </em>7: 7–12.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lamarck, J.B. de & De Candolle, A.P. (1805) <em>Flore Française,</em> Ed. 3 (2): 1–600.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lendemer, J.C., Harris, R.C. & Ruiz, A.M. (2016) A review of the lichens of the Dare Regional Biodiversity Hotspot in the Mid-Atlantic Coastal Plain of North Carolina, eastern North America. <em>Castanea</em> 81 (1): 1–7. https://doi.org/10.2179/15-073R2</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Lücking, R., Seavey, F., Common, R., Beeching, S.Q., Breuss, O., Buck, W.R., Crane, L., Hodges, M., Hodkinson, B.P., Lay, E., Lendemer, J.C., McMullin, R.T., Mercado-Díaz, J.A., Nelsen, M.P., Rivas Plata, E., Safranek, W., Sanders, W.B., Schaefer, H.P., Jr. & Seavey, J. (2011) The lichens of Fakahatchee Strand Preserve State Park, Florida: Proceedings from the 18th Tuckerman Workshop. <em>Bulletin of the Florida Museum of Natural History</em> 49 (4): 127–186.</span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Nelsen, M.P., Lücking, R., Grube, M., Mbatchou, J.S., Muggia, L., Rivas Plata, E. & Lumbsch, H.T. (2009) Unravelling the phylogenetic relationships of lichenised fungi in <em>Dothideomyceta</em>. <em>Studies in Mycology</em> 64: 135–144. https://doi.org/10.3114/sim.2009.64.07 </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Thiyagaraja, V., Lücking, R., Ertz, D., Wanasinghe, D.N., Karunarathna, S.C., Camporesi, E. & Hyde, K.D. (2020) Evolution of non‐lichenized, saprotrophic species of <em>Arthonia</em> (<em>Ascomycota</em>, <em>Arthoniales</em>) and resurrection of <em>Naevia</em>, with notes on <em>Mycoporum</em>. <em>Fungal Diversity </em>102: 205–224. https://doi.org/10.1007/s13225-020-00451-9 </span></span></span></p>
<p align="justify"><span style="color: #000000;"><span style="font-family: Times New Roman, serif;"><span style="font-size: small;">Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (eds.) (2018) <em>International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017.</em> Regnum Vegetabile 159. Glashütten: Koeltz Botanical Books. https://doi.org/10.12705/Code.2018</span></span></span></p>