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Abstract
Stereophyllum linisii Enroth & B.C.Tan (Stereophyllaceae), a rheophytic species, is transferred as Pseudoparaphysanthus linisii (Enroth & B.C.Tan) S.He, Sukkharak & Chantanaorr. (Neckeraceae). The new combination belongs to the recently segregated genus that was established among Neckeropsis sect. Pseudoparaphysanthus. The species has recently been discovered in Thailand and thus new to mainland South-east Asia, representing the first record outside the type locality in the Philippines. Along with the description based on the Thai collection, light microscope photographs of the features of morphological importance and line drawings of the phyllotaxy of this species as well as a key to the genus Pseudoparaphysanthus are provided.
Acknowledgements
We thank B. Hassama, C. Kraithep, W. Juengprayoon, P. Rojchana-umpawan, N. Putthisawong, J. Sangrattanaprasert and O. Suwanmala for their help during the field work. Thanks also to two anonymous reviewers and the scientific editor for useful suggestions. This research was supported by the National Geographic Society grant (NGS 9777-15).