455 Malmidea bakeri (Vain.) Kalb, Rivas Plata & Lumbsch Thallus corticolous, grey, soralia absent, verrucose. Medulla white, K+ yellowish. Excipulum brown, hyaline at periphery. Internal with medul- lary patches, composed of loosely arranged hyphae, incrusted with granules, which are dissolving in KOH with yellowish colour. Ascospo- res hyaline, non-septate, 10-12 x 6-7 μm. Chemistry: atranorin (maj), several unknown xantholepinones. Lit. Kalb, K. et al (2011): Bibl. Lich. Nr. 106: 143-168. [17519], Thailand, Trat province, Ban-Dan Kao island, Mangroven Wald, 12.21359° N, 102.55290° E, 5 m. Leg. Schumm (IAL7) 15.01.2012, det. Kalb 06.2012.