Accepted by Christian Printzen: 22 Jul. 2015; published: 20 November 2015 1 PHYTOTAXA ISSN 1179-3155 (print edition) ISSN 1179-3163 (online edition) Copyright © 2015 Magnolia Press Phytotaxa 235 (1): 001–066 www.mapress.com/ phytotaxa/ Monograph http://dx.doi.org/10.11646/phytotaxa.235.1.1 PHYTOTAXA The lichen family Physciaceae in Thailand—II. Contributions to the genus Heterodermia sensu lato PACHARA MONGKOLSUK 1* , SANYA MEESIM 1 , VASUN POENGSUNGNOEN 1 , KAWINNAT BUARUANG 1 , FELIX SCHUMM 2 & KLAUS KALB 3,4 1 Lichen Research Unit, Biology Department, Faculty of Science, Ramkhamhaeng University, Ramkhamhaeng 24 road, Bangkok, 10240 Thailand. 2 Mozartstraße 9, D-73117 Wangen, Germany. 3 Lichenologisches Institut Neumarkt, Im Tal 12, D-92318 Neumarkt, Germany. Email: klaus.kalb@arcor.de 4 University of Regensburg, Institute of Plant Sciences, Universitätsstraβe 31, D-39040 Regensburg, Germany * Corresponding author—email: pm-tamrapap@ru.ac.th Magnolia Press Auckland, New Zealand 235