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
<p>Bendiksby, M. & Timdal, E. (2013) Molecular phylogenetics and taxonomy of <em>Hypocenomyce</em> sensu lato (Ascomycota: Lecanoromycetes): extreme polyphyly and morphological/ecological convergence. <em>Taxon</em> 62: 940–956. https://doi.org/10.12705/625.18</p>
<p>Byazrov, L.G. (1986) Additions to the lichen flora in Khangai (Mongolian People’s Republic). 1. The family Umbilicariaceae Fee.<em> Bjulleten’ Moskovskogo Obscestva Ispytatalej Pirody. Otdel Biologiceskij </em>91: 100–101. [In Russian]</p>
<p>Davydov, E.A., Peršoh, D. & Rambold, G. (2017) Umbilicariaceae (lichenized Ascomycota) – trait evolution and a new generic concept. <em>Taxon</em> 66: 1282–1303. https://doi.org/10.12705/666.2</p>
<p>Davydov, E.A., Blum, O.B., Kashevarov, G.P. & Grakhov, V.P. (2019) <em>Umbilicaria subpolyphylla</em> Oxner the correct name for <em>U. iberica</em> Sancho et Krzewicka and its bipolar distribution pattern. <em>The Lichenologist</em> 51: 205–220. https://doi.org/10.1017/S002428291900015X</p>
<p>Davydov, E.A., Ahti, T. & Sennikov, A.N. (2020<em>a</em>) The nomenclatural history of <em>Umbilicaria spodochroa</em> and nomenclatural corrections in Umbilicariaceae. <em>Mycotaxon</em> 135: 131–141. https://doi.org/10.5248/135.131</p>
<p>Davydov, E.A., Yakovchenko, L.S., Urbanavichene, I., Konoreva, L., Chesnokov, S., Kharpukhaeva, T. & Obermayer, W. (2020<em>b</em>) <em>Umbilicaria orientalis</em> – a new species of <em>Umbilicaria</em> subg. <em>Papillophora</em> with an East Asian distribution: morphological delimitation and molecular evidence. <em>The Lichenologist</em> 52: 353–364. https://doi.org/10.1017/S0024282920000389</p>
<p>Davydov, E.A. & Masson, D. (2022) <em>Umbilicaria meizospora</em> comb. nov. – a southwestern European endemic species of the subgenus <em>Papillophora</em>. <em>The Lichenologist</em> 54. [in press] https://doi.org/10.1017/S0024282921000475</p>
<p>Frey, E. (1933) <em>Cladoniaceae</em> (unter Ausschluß der Gattung <em>Cladonia</em>), <em>Umbilicariaceae</em>. <em>In:</em> Zahlbruckner, A. (ed.) <em>Dr. L. Rabenhorst’s Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. Ed. 2. Vol. 9 (4, 1)</em>. Akademische Verlagsgesellschaft, Leipzig. 426 pp.</p>
<p>Frey, E. (1936) Vorarbeiten zu einer Monographie der Umbilicariaceen. <em>Berichte der Schweizerischen Botanischen Gesellschaft</em> 45: 198–230.</p>
<p>John, V. (2002) Lichenes Anatolici Exsiccati. Fasc. 6–7 (no. 126–175). <em>Arnoldia (Munich)</em> 21: 1–28.</p>
<p>Krzewicka, B. (2004) The lichen genera <em>Lasallia</em> and <em>Umbilicaria</em> in the Polish Tatra Mts. <em>Polish Botanical Studies </em>17: 1–88.</p>
<p>Krzewicka, B. & Smykla, J. (2004) The lichen genus <em>Umbilicaria</em> from the neighbourhood of Admiralty Bay (King George Island, maritime Antarctic), with a proposed new key to all Antarctic taxa. <em>Polar Biology</em> 28: 15–25. https://doi.org/10.1007/s00300-004-0638-9</p>
<p>Nimis, P.L. (2016) <em>The lichens of Italy. A second annotated catalogue</em>. Edizioni Università di Triestre, Triestre. 740 pp.</p>
<p>Orange, A., James, P.W. & White, F.J. (2001) <em>Microchemical methods for the identification of lichens</em>. British Lichen Society, London, 101 pp.</p>
<p>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) <em>Catalogue des lichens et champignons lichénicoles de France métropolitaine. 3e édition revue et augmentée</em>. Association française de lichénologie, Fontainebleau, 1341 pp.</p>
<p>Vežda, A. (1978) <em>Lichenes selecti exsiccati, Editi ab Instituto Botanico Academiae Scientiarum Cechoslovacae</em>,<em> Pruhonice prope Pragam</em>. Fasc. LXII (no. 1526–1550). IV. 7 pp.</p>
<p>Wei, J.C. & Jiang, Y.M. (1993) The Asian <em>Umbilicariaceae</em> (Ascomycota).—<em>Mycosystema Monographicum</em> Ser. No. 1. International Academic Publishers, Beijing, 217 pp.</p>
<p>Byazrov, L.G. (1986) Additions to the lichen flora in Khangai (Mongolian People’s Republic). 1. The family Umbilicariaceae Fee.<em> Bjulleten’ Moskovskogo Obscestva Ispytatalej Pirody. Otdel Biologiceskij </em>91: 100–101. [In Russian]</p>
<p>Davydov, E.A., Peršoh, D. & Rambold, G. (2017) Umbilicariaceae (lichenized Ascomycota) – trait evolution and a new generic concept. <em>Taxon</em> 66: 1282–1303. https://doi.org/10.12705/666.2</p>
<p>Davydov, E.A., Blum, O.B., Kashevarov, G.P. & Grakhov, V.P. (2019) <em>Umbilicaria subpolyphylla</em> Oxner the correct name for <em>U. iberica</em> Sancho et Krzewicka and its bipolar distribution pattern. <em>The Lichenologist</em> 51: 205–220. https://doi.org/10.1017/S002428291900015X</p>
<p>Davydov, E.A., Ahti, T. & Sennikov, A.N. (2020<em>a</em>) The nomenclatural history of <em>Umbilicaria spodochroa</em> and nomenclatural corrections in Umbilicariaceae. <em>Mycotaxon</em> 135: 131–141. https://doi.org/10.5248/135.131</p>
<p>Davydov, E.A., Yakovchenko, L.S., Urbanavichene, I., Konoreva, L., Chesnokov, S., Kharpukhaeva, T. & Obermayer, W. (2020<em>b</em>) <em>Umbilicaria orientalis</em> – a new species of <em>Umbilicaria</em> subg. <em>Papillophora</em> with an East Asian distribution: morphological delimitation and molecular evidence. <em>The Lichenologist</em> 52: 353–364. https://doi.org/10.1017/S0024282920000389</p>
<p>Davydov, E.A. & Masson, D. (2022) <em>Umbilicaria meizospora</em> comb. nov. – a southwestern European endemic species of the subgenus <em>Papillophora</em>. <em>The Lichenologist</em> 54. [in press] https://doi.org/10.1017/S0024282921000475</p>
<p>Frey, E. (1933) <em>Cladoniaceae</em> (unter Ausschluß der Gattung <em>Cladonia</em>), <em>Umbilicariaceae</em>. <em>In:</em> Zahlbruckner, A. (ed.) <em>Dr. L. Rabenhorst’s Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. Ed. 2. Vol. 9 (4, 1)</em>. Akademische Verlagsgesellschaft, Leipzig. 426 pp.</p>
<p>Frey, E. (1936) Vorarbeiten zu einer Monographie der Umbilicariaceen. <em>Berichte der Schweizerischen Botanischen Gesellschaft</em> 45: 198–230.</p>
<p>John, V. (2002) Lichenes Anatolici Exsiccati. Fasc. 6–7 (no. 126–175). <em>Arnoldia (Munich)</em> 21: 1–28.</p>
<p>Krzewicka, B. (2004) The lichen genera <em>Lasallia</em> and <em>Umbilicaria</em> in the Polish Tatra Mts. <em>Polish Botanical Studies </em>17: 1–88.</p>
<p>Krzewicka, B. & Smykla, J. (2004) The lichen genus <em>Umbilicaria</em> from the neighbourhood of Admiralty Bay (King George Island, maritime Antarctic), with a proposed new key to all Antarctic taxa. <em>Polar Biology</em> 28: 15–25. https://doi.org/10.1007/s00300-004-0638-9</p>
<p>Nimis, P.L. (2016) <em>The lichens of Italy. A second annotated catalogue</em>. Edizioni Università di Triestre, Triestre. 740 pp.</p>
<p>Orange, A., James, P.W. & White, F.J. (2001) <em>Microchemical methods for the identification of lichens</em>. British Lichen Society, London, 101 pp.</p>
<p>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) <em>Catalogue des lichens et champignons lichénicoles de France métropolitaine. 3e édition revue et augmentée</em>. Association française de lichénologie, Fontainebleau, 1341 pp.</p>
<p>Vežda, A. (1978) <em>Lichenes selecti exsiccati, Editi ab Instituto Botanico Academiae Scientiarum Cechoslovacae</em>,<em> Pruhonice prope Pragam</em>. Fasc. LXII (no. 1526–1550). IV. 7 pp.</p>
<p>Wei, J.C. & Jiang, Y.M. (1993) The Asian <em>Umbilicariaceae</em> (Ascomycota).—<em>Mycosystema Monographicum</em> Ser. No. 1. International Academic Publishers, Beijing, 217 pp.</p>