Abstract
Umbilicaria platyrhiza Davydov sp. nov. is described within the Umbilicaria crustulosa – U. spodochroa species complex and illustrated. The new species resembles Umbilicaria crustulosa phenotypically, but is distinct by apothecia with a single gyrus of sterile tissue, grey-brown to black lower surface with flattened to strap-like rhizinomorphs, and by producing umbilicaric (vs. crustinic) acid. Umbilicaria platyrhiza inhabits silicate rocks at low elevations in the Mediterranean region of Eurasia (Prov. Izmir in Turkey and Burgas Region in Bulgaria).
References
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Wei, J.C. & Jiang, Y.M. (1993) The Asian Umbilicariaceae (Ascomycota).—Mycosystema Monographicum Ser. No. 1. International Academic Publishers, Beijing, 217 pp.
Byazrov, L.G. (1986) Additions to the lichen flora in Khangai (Mongolian People’s Republic). 1. The family Umbilicariaceae Fee. Bjulleten’ Moskovskogo Obscestva Ispytatalej Pirody. Otdel Biologiceskij 91: 100–101. [In Russian]
Davydov, E.A., Peršoh, D. & Rambold, G. (2017) Umbilicariaceae (lichenized Ascomycota) – trait evolution and a new generic concept. Taxon 66: 1282–1303. https://doi.org/10.12705/666.2
Davydov, E.A., Blum, O.B., Kashevarov, G.P. & Grakhov, V.P. (2019) Umbilicaria subpolyphylla Oxner the correct name for U. iberica Sancho et Krzewicka and its bipolar distribution pattern. The Lichenologist 51: 205–220. https://doi.org/10.1017/S002428291900015X
Davydov, E.A., Ahti, T. & Sennikov, A.N. (2020a) The nomenclatural history of Umbilicaria spodochroa and nomenclatural corrections in Umbilicariaceae. Mycotaxon 135: 131–141. https://doi.org/10.5248/135.131
Davydov, E.A., Yakovchenko, L.S., Urbanavichene, I., Konoreva, L., Chesnokov, S., Kharpukhaeva, T. & Obermayer, W. (2020b) Umbilicaria orientalis – a new species of Umbilicaria subg. Papillophora with an East Asian distribution: morphological delimitation and molecular evidence. The Lichenologist 52: 353–364. https://doi.org/10.1017/S0024282920000389
Davydov, E.A. & Masson, D. (2022) Umbilicaria meizospora comb. nov. – a southwestern European endemic species of the subgenus Papillophora. The Lichenologist 54. [in press] https://doi.org/10.1017/S0024282921000475
Frey, E. (1933) Cladoniaceae (unter Ausschluß der Gattung Cladonia), Umbilicariaceae. In: Zahlbruckner, A. (ed.) Dr. L. Rabenhorst’s Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. Ed. 2. Vol. 9 (4, 1). Akademische Verlagsgesellschaft, Leipzig. 426 pp.
Frey, E. (1936) Vorarbeiten zu einer Monographie der Umbilicariaceen. Berichte der Schweizerischen Botanischen Gesellschaft 45: 198–230.
John, V. (2002) Lichenes Anatolici Exsiccati. Fasc. 6–7 (no. 126–175). Arnoldia (Munich) 21: 1–28.
Krzewicka, B. (2004) The lichen genera Lasallia and Umbilicaria in the Polish Tatra Mts. Polish Botanical Studies 17: 1–88.
Krzewicka, B. & Smykla, J. (2004) The lichen genus Umbilicaria from the neighbourhood of Admiralty Bay (King George Island, maritime Antarctic), with a proposed new key to all Antarctic taxa. Polar Biology 28: 15–25. https://doi.org/10.1007/s00300-004-0638-9
Nimis, P.L. (2016) The lichens of Italy. A second annotated catalogue. Edizioni Università di Triestre, Triestre. 740 pp.
Orange, A., James, P.W. & White, F.J. (2001) Microchemical methods for the identification of lichens. British Lichen Society, London, 101 pp.
Roux, C., Poumarat, S., Monnat, J.-Y., Van Haluwyn, C., Gonnet, D., Gonnet, O., Bauvet, C., Houmeau, J.-M., Boissière, J.-S., Bertrand, M., Derrien, M.-C., Carlier, G., Masson, D., Farou, J.-L. Lagrandie, J., Gardiennet, A., Esnault, J., Diederich, P., Vallade, J., Quelen, Y., Chipon, B., Ferrez, Y., Florence, É., Daval, G., Gueidan, C., Agnello, G., Bossier, X., Navarro-Rosinés, P., Ragot, R., Lorella, B., Pinault, P., Uriac, P., Lohézic-Le Dévéhat, F., Frachon, C., Offerhaus, B., Wirth, V., Sussey, L.-M., Blondel, É., Guilloux, F., Vaudoré, D., Delhoume, A., Messean, A., Caugant, C., Martin, B., Martin, J.-L., Massé, L.J.-C., Clerc, P., Asta, J., Biache, C., Gattus, J.-C., Lencroz, M., Vilks, A., Brien, Y., Thomas, D., Beudin, T., Priou, J.-P., Bricaud, O., Ménard, T., Schmitt, A., Boumier, R., Demeulant, J., Rémy, C., Gavériaux, J.-P., Maggi, F., Toussaint, B., Julien, F., Mary, J., Cocquempot, M., Ramond, L., Engler, R., Lacoux, D., Drouard, F., Vermeulen, J.-C., Montavont, J.-P., Humbert, R., Leprince, J.-H., Descheemacker, A., Dufrêne, P., Lebreton, É., Brown, B., Davoust, M., Cartereau, M., Méric, J.-C., Aïtelli, M., Bibas, M., Chapuis, L., Lagabrielle, J., Lerat, C., Sérusiaux, E., Béguinot, J., Deschâtres, R., Hugueny, P., Hairie, F., Baubet, R., Verhoeyen, K., Prelli, R., Duvivier, J.-P., Boucheron, C., Royau, A. & Hurtado, C. (2020) Catalogue des lichens et champignons lichénicoles de France métropolitaine. 3e édition revue et augmentée. Association française de lichénologie, Fontainebleau, 1341 pp.
Vežda, A. (1978) Lichenes selecti exsiccati, Editi ab Instituto Botanico Academiae Scientiarum Cechoslovacae, Pruhonice prope Pragam. Fasc. LXII (no. 1526–1550). IV. 7 pp.
Wei, J.C. & Jiang, Y.M. (1993) The Asian Umbilicariaceae (Ascomycota).—Mycosystema Monographicum Ser. No. 1. International Academic Publishers, Beijing, 217 pp.