Phyllanthus kaweesakii (Phyllanthaceae), a new species from Thailand

Pornpongrungrueng, Pimwadee; Parnell, John A.N.; Hodkinson, Trevor R.; Chantaranothai, Pranom

Phyllanthus kaweesakii (Phyllanthaceae), a new species from Thailand

2017

Pornpongrungrueng, Pimwadee | Parnell, John A.N. | Hodkinson, Trevor R. | Chantaranothai, Pranom

Phyllanthus kaweesakii Pornp., Chantar. & J.Parn. sp. nov. is newly described from the limestone mountain ridges in the northeast of Thailand. Comparison of morphology, anatomy, pollen morphology, and DNA sequences of this species with the most similar existing species P. mirabilis Müll.Arg. was undertaken. The results indicated that the two taxa are different in morphology, especially habit, stem base, and inflorescence, but that their pollen morphology and anatomy are similar. The molecular phylogenetic analysis, based on sequences of the plastid matK and nuclear ribosomal ITS regions, supported separation of the two taxa. This new species is described and illustrated, and its conservation status is discussed.

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