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Papong K.B.,Mahasarakham University | Mangold A.,Ossastrasse 6 | Lucking R.,Integrative Research Center and Collections Center | Lumbsch H.T.,Integrative Research Center and Collections Center
Phytotaxa | Year: 2014

Six new species of thelotremoid Graphidaceae are described from Thailand. Leucodecton confusum Papong, Mangold & Lücking has a densely corticate thallus and small, lepadinoid ascomata with double margin producing small, hyaline, submuriform ascospores. Ocellularia cerebriformis Papong, Lücking & Lumbsch is characterized by a brain-like, folded thallus surface, in combination with small, (sub-)muriform ascospores and protocetraric acid chemistry. Ocellularia kohphangangensis Papong, Mangold & Lücking features an unusual combination of small, brown, submuriform ascospores and the cinchonarum unknown chemistry. Ocellularia pseudopapillata Papong, Mangold & Lücking differs from O. papillata in the uneven-verrucose thallus, the thin, indistinctly fissured proper margin of the ascomata, and the carbonized columella. Ocellularia salazinica Papong, Mangold & Lücking is characterized by the presence of salazinic acid (a rare substance in Graphidaceae), in combination with ascomata resembling those of Rhabdodiscus, and comparatively large, muriform ascospores. A further species of Ocellularia, O. subdolichotata Papong, Mangold & Lumbsch, has a smooth, white thallus, prominent, columellate and carbonized ascomata, large, transversely septate ascospores (smaller than in O. dolichotata), and lacks secondary substances. The following 11 species are new records for Thailand: Chapsa discoides (Stirt.) Lücking, Glaucotrema glaucophaenum (Kremp.) Rivas Plata & Lumbsch, Leucodecton anamalaiense (Patw. & C. R. Kulk.) Rivas Plata & Lücking, Ocellularia fumosa (Ach.) Müll. Arg., O. granulifera (Kremp.) Müll. Arg., O. violacea Räsänen, O. viridipallens Müll. Arg., Rhabdodiscus subcavatus (Nyl.) Rivas Plata & Lumbsch, Stegobolus berkeleyanus Mont., Thelotrema defossum (Müll. Arg.) Mangold, and T. subadjectum Mangold. © 2014 Magnolia Press. Source

Kraichak E.,Science and Education | Parnmen S.,Toxicology and Biochemistry Section | Lucking R.,Science and Education | Plata E.R.,Science and Education | And 9 more authors.
Phytotaxa | Year: 2014

We present an updated 3-locus molecular phylogeny of tribe Ocellularieae, the second largest tribe within subfamily Graphidoideae in the Graphidaceae. Adding 165 newly generated sequences from the mitochondrial small subunit rDNA (mtSSU), the nuclear large subunit rDNA (nuLSU), and the second largest subunit of the DNA-directed RNA polymerase II (RPB2), we currently distinguish 218 species among the sequenced material, including the outgroup. This corresponds to almost half the species at this point recognized within this tribe. The newly generated sequences include 23 newly described species and one newly described genus published elsewhere in this volume. For the first time, Sarcographina cyclospora Müll. Arg., in spite of its distinctly lirellate ascomata, is shown to belong in tribe Ocellularieae, as strongly supported sister to Ocellularia inturgescens (Müll. Arg.) Mangold. The following six new combinations are proposed: Melanotrema lynceodes (Nyl.) Rivas Plata, Lücking & Lumbsch, Ocellularia curranii (Vain.) Kraichak, Lücking & Lumbsch, O. khasiana (Patw. & Nagarkar) Kraichak, Lücking & Lumbsch, O. cinerea (Müll. Arg.) Kraichak, Lücking & Lumbsch, O. erodens (R. C. Harris) Kraichak, Lücking & Lumbsch, and O. laeviuscula (Nyl) Kraichak, Lücking & Lumbsch. Further, the new name Ocellularia hernandeziana Kraichak, Lücking & Lumbsch is introduced for Myriotrema ecorticatum. The nomenclatural status of the name Ocellularia microstoma is clarified. © 2014 Magnolia Press. Source

Lucking R.,Science and Education | Johnston M.K.,Science and Education | Aptroot A.,ABL Herbarium | Kraichak E.,Science and Education | And 26 more authors.
Phytotaxa | Year: 2014

Recent studies of the global diversity of the lichenized fungal family Graphidaceae suggest that there are a large number of species remaining to be discovered. No less than 640 species have been described since 2002, including 175 new species introduced in a collaborative global effort in a single issue in this journal. These findings suggest that the largest family of tropical crustose lichens may have an even higher number of species than Parmeliaceae. To estimate whether the discovery of 175 new species is a significant step forward in cataloguing extant diversity in this family, we employed a parametric method to predict global species richness of Graphidaceae using a GIS-based grid map approach. The model employs linear regression between observed species richness and sample score and vegetation composition per grid to predict individual grid species richness, and interpolation of species grid distributions to predict global species richness. We also applied a non-parametric species-area curve approach and non-parametric species richness estimators (Chao, Jackknife, Bootstrap) to compare the results from the different methods. Our approach resulted in a prediction of 4,330 species of Graphidaceae, including approximately 3,500 (sub-)tropical species in the core subfamilies Fissurinoideae, Graphidoideae, Redonographoideae, plus 125 species restricted to extratropical regions (outside the zone between 30° northern and 30° southern latitude) and 700 species in subfamily Gomphilloideae. Currently, nearly 2,500 species are known in the family, including species not yet formally described. Thus, our model suggests that even after describing 175 species in this issue and with another approximately 140 awaiting publication, the number of species still to be discovered and described is more than 1,800, and much work remains to be done to close this substantial gap. Based on our approach, we predict that most of this undiscovered diversity is to be found in Mexico, the northern Andean region, the eastern Amazon and central and southern Brazil, tropical West Africa, continental Southeast Asia, Indonesia, and Papua New Guinea. © 2014 Magnolia Press. Source

Lumbsch H.T.,Field Museum | Divakar P.K.,Complutense University of Madrid | Messuti M.I.,CONICET | Mangold A.,Ossastrasse 6 | Lucking R.,Field Museum
Lichenologist | Year: 2010

Thelotremoid lichens (Ostropales, Ascomycota) with a trentepohlioid photobiont in Tierra del Fuego, the Falkland Islands, the South Island of New Zealand, and subpolar islands of the southern Hemisphere are studied. Twenty-five species are accepted, with three species described as new to science: Melanotopelia blepharostoma Lumbsch & Divakar, Topeliopsis athallina Lumbsch & Mangold and Topeliopsis patagonica Mangold & Lumbsch. The new combination Topeliopsis novae-zelandiae (Szatala) Lumbsch & Mangold is proposed. Copyright © 2010 British Lichen Society. Source

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