A.  Crespo, Kauff, F., Divakar, P. K., del Prado, R., Pérez-Ortega, S., Amo de Paz, G., Ferencova, Z., Blanco, O., Roca-Valiente, B., Núñez-Zapata, J., Cubas, P., Argüello, A., Elix, J. A., Esslinger, T. L., Hawksworth, D. L., Millanes, A. M., M. Molina, C., Wedin, M., Ahti, T., Aptroot, A., Barreno, E., Bungartz, F., Calvelo, S., Candan, M., Cole, M., Ertz, D., Goffinet, B., Lindblom, L., Lücking, R., Lutzoni, F., Mattsson, J. - E., Messuti, M. I., Miadlikowska, J., Piercey-Normore, M. D., Rico, V. J., Sipman, H. J. M., Schmitt, I., Spribille, T., Thell, A., Thor, G., Upreti, D., and Lumbsch, H. T., ?Phylogenetic generic classification of parmelioid lichens (Parmeliaceae, Ascomycota) based on molecular, morphological and chemical evidence?, Taxon, vol. 59, pp. 1735-1753, 2010.

G.  Singh, Divakar, P. K., Dal Grande, F., Otte, J., Parnmen, S., Wedin, M., Crespo, A., Lumbsch, H. T., and Schmitt, I., ?The sister-group relationships of the largest family of lichenized fungi, Parmeliaceae (Lecanorales, Ascomycota)?, Fungal Biology, vol. 117, pp. 715-721, 2013.

P. K.  Divakar, Del-Prado, R., Lumbsch, H. T., Wedin, M., Esslinger, T. L., Leavitt, S. D., and Crespo, A., ?Diversification of the newly recognized lichen-forming fungal lineage Montanelia (Parmeliaceae, Ascomycota) and its relation to key geological and climatic events?, American Journal of Botany, vol. 99, pp. 2014-2026, 2012.

C. G.  Boluda, Rico, V. J., Crespo, A., Divakar, P. K., and Hawksworth, D. L., ?Molecular sequence data from populations of Bryoria fuscescens s. lat. in the mountains of central Spain indicates a mismatch between haplotypes and chemotypes?, Lichenologist, vol. 47, pp. 279-286, 2015.

G.  Singh, Dal Grande, F., Divakar, P. K., Otte, J., Leavitt, S. D., Szczepanska, K., Crespo, A., Rico, V. J., Aptroot, A., Cáceres, M. Eda Silva, Lumbsch, H. T., and Schmitt, I., ?Coalescent-based species delimitation approach uncovers high cryptic diversity in the cosmopolitan lichen-forming fungal genus Protoparmelia (Lecanorales, Ascomycota)?, PLOS ONE, vol. 10, no. 5, p. e0124625, 2015.

A.  Crespo, Divakar, P. K., Argüello, A., Gasca, C., and Hawksworth, D. L., ?Molecular studies on Punctelia species of the Iberian Peninsula, with an emphasis on specimens newly colonizing Madrid?, Lichenologist, vol. 36, pp. 299-308, 1999.

R.  Del-Prado, Cubas, P., Lumbsch, H. T., Divakar, P. K., Blanco, O., G. de Paz, A., Molina, M. C., and Crespo, A., ?Genetic distances within and among species in monophyletic lineages of Parmeliaceae (Ascomycota) as a tool for taxon delimitation?, Molecular Phylogenetics and Evolution, vol. 56, pp. 125-133, 2010.

B.  Roca-Valiente, Hawksworth, D. L., Pérez-Ortega, S., Sancho, L. G., and Crespo, A., ?Type studies in the Rhizocarpon geographicum group (Rhizocarpaceae, lichenized Ascomycota)?, Lichenologist, vol. 48, pp. 97-110, 2016.

P. K.  Divakar, Crespo, A., Kraichak, E., Leavitt, S. D., Singh, G., Schmitt, I., and Lumbsch, H. T., ?Using a temporal phylogenetic method to harmonize family- and genus-level classification in the largest clade of lichen-forming fungi?, Fungal Diversity, vol. 84, pp. 101-117, 2017.

P. K.  Divakar, Leavitt, S. D., M. Molina, C., Del-Prado, R., Lumbsch, H. T., and Crespo, A., ?A DNA barcoding approach for identification of hidden diversity in Parmeliaceae (Ascomycota): Parmelia sensu stricto as a case study?, Botanical Journal of the Linnean Society, vol. 180, pp. 21-29, 2016.

A.  Crespo, M. Molina, C., Blanco, O., Schroeter, B., Sancho, L. G., and Hawksworth, D. L., ?rDNA ITS and ?-tubulin gene sequence analyses reveal two monophyletic groups within the cosmopolitan lichen Parmelia saxatilis?, Mycological Research, vol. 106, pp. 788-795, 2002.

C.  M. Molina, Del-Prado, R., Divakar, P. K., Sánchez-Mata, D., and Crespo, A., ?Another example of cryptic diversity in lichen-forming fungi: the new species Parmelia mayi (Ascomycota: Parmeliaceae)?, Organisms Diversity & Evolution, vol. 11, pp. 331-342, 2011.

P. K.  Divakar, M. Molina, C., Lumbsch, H. T., and Crespo, A., ?Parmelia barrenoae, a new lichen species related to Parmelia sulcata (Parmeliaceae) based on molecular and morphological data?, Lichenologist, vol. 37, pp. 37-46, 2005.

delCarmen M. Molina, Crespo, A., Blanco, O., Lumbsch, H. T., and Hawksworth, D. L., ?Phylogenetic relationships and species concepts in Parmelia s. str. (Parmeliaceae) inferred from nuclear ITS rDNA and beta-tubulin sequences?, Lichenologist, vol. 36, pp. 37-54, 2004.

J.  Núñez-Zapata, Cubas, P., Hawksworth, D. L., and Crespo, A., ?Biogeography and genetic structure in populations of a widespread lichen (Parmelina tiliacea, Parmeliaceae, Ascomycota)?, PLOS ONE, vol. 10, no. 5, p. e0126981, 2015.

J.  Núñez-Zapata, Divakar, P. K., del Prado, R., Cubas, P., Hawksworth, D. L., and Crespo, A., ?Conundrums in species concepts: the discovery of a new cryptic species segregated from Parmelina tiliacea (Ascomycota: Parmeliaceae)?, Lichenologist, vol. 43, pp. 603-616, 2011.

A.  Argüello, del Prado, R., Cubas, P., and Crespo, A., ?Parmelina quercina (Parmeliaceae, Lecanorales) includes four phylogenetically supported morphospecies?, Biological Journal of the Linnean Society, vol. 91, pp. 455-467, 2007.

delC.  M. Molina, Crespo, A., Blanco, O., Hladun, N., and Hawksworth, D. L., ?Molecular phylogeny and status of Diploicia and Diplotomma, with observations on Diploicia subcanescens and Diplotomma rivas-martinezii?, Lichenologist, vol. 34, pp. 509-519, 2002.

delC.  M. Molina, Crespo, A., Blanco, O., Hladun, N., and Hawksworth, D. L., ?Molecular phylogeny and status of Diploicia and Diplotomma, with observations on Diploicia subcanescens and Diplotomma rivas-martinezii?, Lichenologist, vol. 34, pp. 509-519, 2002.

S.  Pérez-Ortega, Suija, A., Crespo, A., and A. Ríos, Dlos, ?Lichenicolous fungi of the genus Abrothallus (Dothideomycetes: Abrothallales ordo nov.) are sister to the predominantly aquatic Janhulales?, Fungal Diversity, vol. 64, pp. 295-304, 2014.

P. K.  Divakar, Amo de Paz, G., del Prado, R., Esslinger, T. L., and Crespo, A., ?Upper cortex anatomy corroborates phylogenetic hypothesis in species of Physconia (Ascomycota, Lecanoromycetes)?, Mycological Research, vol. 111, pp. 1311-1320, 2007.

X.  Zhao, Leavitt, S. D., Zhao, Z. T., Zhang, L. L., Arup, U., Grube, M., Pérez-Ortega, S., Printzen, C., ?liwa, L., Kraichak, E., Divakar, P. K., Crespo, A., and Lumbsch, H. T., ?Towards a revised generic classification of lecanoroid lichens (Lecanoraceae, Ascomycota) based on molecular, morphological and chemical evidence?, Fungal Diversity, vol. 78, pp. 293-304, 2016.

C. G.  Boluda, Hawksworth, D. L., Divarkar, P. K., Crespo, A., and Rico, V. J., ?Microchemical and molecular investigations reveal Pseudephebe species as cryptic with an environmentally modified morphology?, Lichenologist, vol. 48, pp. 527-543, 2016.

P. K.  Divakar, Figueras, G., Hladun, N. L., and Crespo, A., ?Molecular phylogenetic studies reveal an undescribed species within the North American concept of Melanelixia glabra (Parmeliaceae)?, Fungal Diversity, vol. 42, pp. 47-55, 2010.

O.  Blanco, Crespo, A., Elix, J. A., Hawksworth, D. L., and Lumbsch, H. T., ?A molecular phylogeny and a new classification of parmelioid lichens containing  Xanthoparmelia-type lichenan (Ascomycota: Lecanorales)?, Taxon, vol. 53, pp. 959-975, 2004.

A.  Crespo, Lumbsch, H. T., Mattsson, J. - E., Blanco, O., Divakar, P. K., Articus, K., Wiklund, E., Bawingan, P. A., and Wedin, M., ?Testing morphology-based hypotheses of phylogenetic relationships in Parmeliaceae (Ascomycota) using three ribosomal markers and the nuclear RPB1 gene?, Molecular and Phylogenetic Evolution, vol. 44, pp. 812-824, 2007.

L. G.  Sancho and Crespo, A., ?Lasallia hispanica and related species?, Lichenologist, vol. 21, pp. 45-58, 1989.

delC.  M. Molina, Crespo, A., Blanco, O., Hladun, N., and Hawksworth, D. L., ?Molecular phylogeny and status of Diploicia and Diplotomma, with observations on Diploicia subcanescens and Diplotomma rivas-martinezii?, Lichenologist, vol. 34, pp. 509-519, 2002.

A.  Crespo, Lumbsch, H. T., Mattsson, J. - E., Blanco, O., Divakar, P. K., Articus, K., Wiklund, E., Bawingan, P. A., and Wedin, M., ?Testing morphology-based hypotheses of phylogenetic relationships in Parmeliaceae (Ascomycota) using three ribosomal markers and the nuclear RPB1 gene?, Molecular Phylogenetics and Evolution, vol. 44, pp. 812-824, 2007.

C.  Truong, Divakar, P. K., Yahr, R., Crespo, A., and Clerc, P., ?Testing the use of ITS rDNA and protein-coding genes in the generic and species delimitation of the lichen genus Usnea (Parmeliaceae, Ascomycota)?, Molecular Phylogenetics and Evolution, vol. 68, pp. 357-372, 2013.