Pertusaria jurana var. confluens Erichsen (1935 [1936]: 678) Type:���[Switzerland] SCHWEIZ, Jura, Neuenburg, an Wegulmen bei Buttes, 800 m., 03.10.1928, leg. E. Frey (367) (holotype HBG!). Figure 3. The thallus of the type specimen of Pertusaria jurana var. confluens in HBG is quite thick, whitish-grey and sorediate, with a whitish to brownish prothallus. Soralia are grey-whitish, abundant, orbicular to irregular, discrete, and separated from each other (see Sipman 2006) (Figure 3). The presence of variolaric acid has been detected by TLC. The type specimen Pertusaria jurana var. confluens is morphologically and chemically concordant with Ochrolechia turneri (Smith 1801: 857) Hasselrot (1945: 130) (Kukwa 2011). Therefore it should be treated as a synonym of the latter name (Turland et al. 2018). According to Kukwa (2011) there are two other corticolous and sorediate Ochrolechia species with variolaric acid, O. alboflavescens (Wulfen, in Jacquin 1791 [1789]: 111) Zahlbruckner (1927 [1926]: 94) and O. microstictoides R��s��nen (1936: 226), which resemble O. turneri. Ochrolechia albofavescens has often well-separated soralia, like O. turneri, but it contains in addition to variolaric acid also fatty acids, lichesterinic and protolichesterinic acids. Ochrolechia microstictoides is very variable in thallus morphology, but in general its soralia are irregular and often confluent, but can be distinguished by the presence of lichesterinic acid, which is produced in addition to variolaric acid (Kukwa 2011). Another species which may produce variolaric acid is Varicellaria hemisphaerica (Fl��rke 1815: 6) I. Schmitt & Lumbsch in Schmitt et al. (2012: 29). The species is characterized by the pale bluish-grey tinged thallus with an often broad white margin and conspicuous, paler or concolorous, convex soralia. It can be, however, easily differentiated by the presence of lecanoric acid giving C+ carmine red reaction of soralia (T��nsberg 1992; Chambers et al. 2009; Schmitt et al. 2012)., Published as part of Oset, Magdalena, 2021, On the identity of some taxa of Pertusaria (lichens) described by C. F. E. Erichsen, pp. 165-171 in Phytotaxa 497 (2) on page 169, DOI: 10.11646/phytotaxa.497.2.9, http://zenodo.org/record/5423923, {"references":["Erichsen, C. F. E. (1935 [1936]) Pertusariacae. In: Zahlbruckner, A. (ed.) Dr. L. Rabenhorsts Kryptogamenflora von Deutchland, Osterreich und der Schweiz. Leipzig, Akademische Verlagsgesellschaft. 9 (5) [1]: 321 - 701.","Erichsen, C. F. E. (1936) Beitrage zur Kenntnis der Flechtengattung Pertusaria. Feddes Repertorium 41: 77 - 101. https: // doi. org / 10.1002 / fedr. 19360410105","Sipman, H. J. M. (2006) Compiled identification key to the genus Pertusaria and some confusable taxa in Europe and the Mediterranean. Botanischer Garten und Botanisches Museum Berlin-Dahlem, Freie Universitat Berlin.","Smith, J. E. (1801) English Botany, or Coloured Figures of British Plants with their Essential Characters, Synonymes and Places of Growth; to which will be added occasional remarks by James Edward Smith. The figures by James Sowerby. Vol. 12. London, Taylor & Co, pp. 793 - 864.","Hasselrot, T. E. (1945) Fynd av sallsynta eller forbisedda lavar i Vastergotland. Svensk Botanisk Tidskriften 39: 125 - 136.","Kukwa, M. (2011) The lichen genus Ochrolechia in Europe. Fundacja Rozwoju Uniwersytetu Gdaniskiego, Gdansk, 309 pp.","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) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Glashutten: Koeltz Botanical Books. https: // doi. org / 10.12705 / Code. 2018","Jacquin, N. J. (1791 [1789]) Collectanea ad Botanicam, Chemiam et historiam naturalem spectantia, cum tab. aen. Vol. III. Vienna.","Zahlbruckner, A. (1927 [1926]) Beitrage zur Flechtenflora Niederosterreichs. VIII. Verhandlungen der Zoologisch-Botanischen Gesellschaft in O ¨ sterreich 76: 76 - 101.","Rasanen, V. (1936) Lichenes Fenniae Exsiccati a Museo Botanico Universitati Helsingiensis editi. Schedae ad fasciculos IV - VII (nr. 151 - 350). Helsinki, Botanical Museum of University of Helsinki.","Florke, H. G. (1815) Deutsche Lichenen 2: 6 (no. 29). Berlin.","Schmitt, I., Otte, J., Parnmen, S., Lucking, R., Lumbsch, H. T. (2012) A new circumscription of the genus Varicellaria (Pertusariales, Ascomycota). MycoKeys 4: 23 - 36. https: // doi. org / 10.3897 / mycokeys. 4.3545","Tonsberg, T. (1992) The sorediate and isidiate, corticolous, crustose lichens in Norway. Sommerfeltia 14: 1 - 331.","Chambers, S. P., Gilbert, O. L., James, P. W., Aptroot, A. & Purvis, O. W. (2009) Pertusaria DC. (1805). In: Smith, C. W., Aptroot, A., Coppins, B. J., Fletcher, A., Gilbert, O. L., James, P. W. & Wolseley, P. A. (Eds.) The Lichens of Great Britain and Ireland. British Lichen Society, the Natural History Museum, London, pp. 673 - 687."]}