Nine new lichen species and 64 new records from Sri Lanka Author Weerakoon, Gothamie Author Aptroot, André text Phytotaxa 2016 2016-10-19 280 2 152 162 http://dx.doi.org/10.11646/phytotaxa.280.2.5 journal article 10.11646/phytotaxa.280.2.5 1179-3163 13651969 Megalotremis cylindrica Weerakoon & Aptroot , sp. nov. ( Fig. 1H–I ) Mycobank No.: MB 817611 Megalotremis with olive grey thallus; ascomata not observed; pycnidia abundant, cylindrical with a widened base, pointed, curved to one side, c. 0.1 mm thick, c. 0.2–0.4 mm high, base covered by thallus, remainder pale citrine yellow; conidia hyaline, ellipsoid, 5.5–7 × 3–3.5 μm, with rather pointed ends. Type: — SRI LANKA . Sinharaja, on bark of tree, 14 February 2015 , G.Weerakoon & P.Wolseley Si114 ( holotype PD , isotype F). Thallus corticate, smooth to granular, dull, continuous, thin, olive grey, not surrounded by prothallus. Algae trentepohlioid. Ascomata not observed. Pycnidia abundant, cylindrical with a widened base, pointed, curved to one side, c . 0.1 mm thick, c . 0.2–0.4 mm high, base covered by thallus, remainder pale citrine yellow. Conidia hyaline, ellipsoid, 5.5–7 × 3–3.5 μm, with rather pointed ends. Chemistry. Thallus UV–, C–, K–, KC–, Pd–. TLC: No substances detected. Distribution and habitat: —On tree in wet lowland tropical rain forest. Only known from Sri Lanka . Discussion: —This species is only known from its pycnidia, but these are so characteristic that it can be described as a new species and assigned to the genus Megalotremis , from which a few more species are known without ascomata. It is closest to the neotropical M. flavovulcanus (Komposch) Aptroot in Aptroot et al. (2008: 69) , which has a similar colour of the pycnidium ostiole, but the pycnidia are conical rather than cylindrical.