New or otherwise interesting Lichens. VI, including a lichenicolous fungus Kalb, Klaus Buaruang, Kawinnat Mongkolsuk, Pachara Boonpragob, Kansri Phytotaxa 2012 2012-01-25 42 35 47 3234T Kalb & Jonitz Kalb & Jonitz 2012 [151,609,1355,1382] Arthoniomycetes Arthoniaceae Cryptothecia Fungi Arthoniales 5 40 Ascomycota species napoensis sp. nov.   Sicut Cryptothecia candida (Kremp.) R. Sant., sed materia chemica differt.   Type:—  ECUADOR. Napo: Between Tenaand Pto. Misahuallí, a few km W of Misahuallí, walking trail to ‘ Cascada de Latas’, on bamboo stipes in a tropical rainforest,  480 m, 01°01.9’ S, 77°44’ W,  3 September 2011. K. Kalb, J. Kalb& H. Jonitz( holotypehb. Kalb 38968, isotype UPS).   Etymology:—The specific epithet refers to Napo Provincein Ecuadorwhere the typewas collected.  Thallus up to 4 cmwide, but sometimes several thalli confluent and then forming patches up to 10 cmwide, firmly attached to the substrate, smooth, dull, grey, greenish grey to green, heteromerous, thin, up to 50 µmthick; prothallus byssoid, brownish to black; medulla white, I+ blue; photobiont trentepohlioid, with several cells aggregated. Ascigerous parts delimited, round to elongated, raised, white, I+ violet, 0.4–1 mmdiam. Paraphysoids tightly enclosing the asci. Asci frequent, ± globose, ca. 50 µmdiam., walls 5–6 µmthick, usually with (4–)6(–8) ascospores. Ascospores ellipsoid but often curved and slightly thickened in the middle, with 9–13 transverse and 1–3(–4) longitudinal septa, (40–)45–55(–60) × (12–)13–15(–18) µm. Chemistry: confluentic acid (major), 2’- O-methylmicrophyllinic acid (trace) and 2’- O-methylperlatolic acid (trace) [J. Elix 2011, HPLC, TLC].   Notes:—  Cryptothecia napoensisis closely related to the epiphyllous  C. candida,and initially a new species was not described despite its occurence on bamboo. Bamboo culms provide a habitat often exploited by foliicolous species ( Santesson 1952). However,  C. candidais distinguished by its slightly larger ascospores (48–)52–60(–65) × (16–)17–20(–22) µm ( Thor 1997) and especially by its alternative chemistry, i.e. not gyrophoric acid as mentioned by Thor (1997), but 2’- O-methylperlatolic acid and 2’- O-methylanziaic acid ( Lücking et al.2006). The morphologically identical neotropical  C. filicinadiffers in having perlatolic acid. Until now, the chemistry of the new species is unique within the genus. 3128939304 2011-09-03 UPS K. Kalb & J. Kalb & H. Jonitz Ecuador Between Tena 480 -1.0316666 Cascada de Latas' 930 -77.73333 Misahualli 5 40 1 Napo holotype