In this paper, we present a systematic treatment of Botryosphaeriaceae and its related asexual morph genera based on type specimens sourced from various herbaria and a morphological study of 17 fresh specimens of botryosphaeriaceous taxa from northern Thailand as well as a molecular phylogenetic analysis of sequence

data from four genes. Two monotypic genera and four Ceritinib price new species are introduced, one in Botryosphaeria, one in Phaeobotryosphaeria and two in Aeurswaldia. These taxa are fully described and their taxonomy is discussed. Materials and methods Examination of herbarium material and fresh specimens The type specimens of Auerswaldia, Auerswaldiella, Barriopsis, Botryosphaeria, Leptoguignardia, Melanops, Neodeightonia, Phaeobotryon, Phaeobotryosphaeria, Phyllachorella, Pyrenostigme, Saccharata, Sivanesania, Spencermartinsia and Vestergrenia

were obtained from BPI, K, IMI, LISE, LPS, PREM and S. Fresh material was collected from Chiang Mai, Chiang Rai, Lampang and Phayao provinces in Thailand. Seventeen freshly collected samples were grown on malt extract agar (MEA) and/or potato dextrose agar (PDA). Methods for examining the Z-VAD-FMK datasheet type material and isolation from fresh material were as in Boonmee et al. (2011), Chomnunti et al. (2011) and Liu et al. (2011). To increase the chances of sporulation 3–5 single ascospore cultures were placed around the Petri-dish so that mixing of mycelia

occurred. Observations and photomicrographs were made from material mounted in water using a Nikon ECLIPSE 80i microscope. India ink was added to water mounts to detect the presence of gelatinous sheaths or ascospore appendages. Measurements were CYTH4 made with Tarosoft (R) Image Frame Work (Liu et al. 2010). DNA extraction, PCR amplification and sequencing Fungal isolates were grown on PDA for 1 week at 28 °C in the dark. Genomic DNA was extracted from the fresh mycelium using the Biospin Fungus Genomic DNA Extraction Kit (BioFlux®) following the manufacturer’s protocol (Hangzhou, P.R. China). DNA amplification was performed by polymerase chain reaction (PCR). Primer pairs NS1 and NS4 (White et al. 1990) were used to amplify a region spanning of the nuclear ribosomal SSU gene. LROR and LR5 primer pairs (Vilgalys and Hester 1990) were used to amplify a segment of the large subunit rRNA gene. Primer pairs ITS4 and ITS5 (White et al. 1990) were used to amplify the internal transcribed spacers. Primers EF1–728 F and EF1–986R (Carbone and Kohn 1999) and Bt2a and Bt2b (Glass and Donaldson 1995) were used to amplify and sequence part of the translation elongation factor 1-alpha (EF1-α) gene and part of the β-tubulin gene respectively. Amplification and nucleotide sequencing of the EF1-α and β-tubulin genes were performed as described by Alves et al. (2006, 2008).