Three new anamorph of Ceramothyrium aquaticum sp. nov., Ceramothyrium exiguum sp. nov., and Ceramothyrium phuquocense sp. nov. are described and illustrated. These fungi were isolated from submerged decaying leaves collected from Phu Quoc National Park, Phu Quoc province, Viet Nam. The phylogeny based on ITS region and D1/D2 of the 28S rDNA gene showed that these fungi nested in the Ceramothyrium. Morphologically, C. aquaticum, C. phuquocense sp. nov. and C. exiguum sp. nov. are characterized;they were different from known anamorph species of Ceramothyrium by having one main axis and two lateral arms with 70 - 90, 33.5 - 72.5 and 70 - 130 μm long main axis, respectively. The table to compare Ceramothyrium anamorph is also given.
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