Abstract
Most species of Cryptocoryneum have been reported on dead wood, with some species rarely reported from leaf litter or arthropod dung. Cryptocoryneum polyramosum sp. nov., collected from dead twigs of tea (Camellia sinensis), grown in high mountain areas in Sichuan Province in China, is described and illustrated. The new species is distinguished by having up to 24 cylindrical, brown, smooth conidial arms, a significantly higher number compared to other known Cryptocoryneum species, which typically possess fewer than 16 arms. The phylogenetic analyses based on a combined sequence dataset of LSU, SSU, ITS, tef1-α, and rpb2 indicate that C. polyramosum forms a distinct clade, sister to other species within the genus. Comparative morphological analysis with other Cryptocoryneum species highlights the unique features of this taxon. A detailed list of morphological variations is provided to enhance the understanding of the genus Cryptocoryneum and its species diversity.
References
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