ARPHA Preprints, doi: 10.3897/arphapreprints.e105209

Morphological, anatomical, phytochemical, and phylogenetic evidences reveal into a new Derris species (Fabaceae) with rare flowers and reddish midribs, from Peninsular Thailand

Punvarit Boonprajan^‡, Charan Leeratiwong^§, Yotsawate Sirichamorn^‡

‡ Silpakorn University, Nakhon Pathom, Thailand§ Prince of Songkla University, Hat Yai, Thailand

Corresponding author: Yotsawate Sirichamorn ( y.sirichamorn@gmail.com )

This is an open access preprint distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Citation: Boonprajan P, Leeratiwong C, Sirichamorn Y (2023) Morphological, anatomical, phytochemical, and phylogenetic evidences reveal into a new Derris species (Fabaceae) with rare flowers and reddish midribs, from Peninsular Thailand. ARPHA Preprints. https://doi.org/10.3897/arphapreprints.e105209

Abstract

Derris erythrocosta Boonprajan & Sirich., sp. nov., a new species of the genus Derris Lour. (Fabaceae) was discovered from Peninsular, Thailand. The taxon was considered as a distinct species in terms of integrative taxonomy approach. The overall morphology demonstrated that this species most resembled D. pubipetala. According to the macro-morphological and leaves micro-morphological studies, this taxon has several autapomorphies distinctively different from other Derris species, e.g., the presence of reddish midribs of the mature leaflets, sparsely hairy filaments, prominent hairs at base of anthers, and presence of glandular trichomes along the midrib. Additionally, HPLC fingerprints from phytochemical study of this species were also distinct. Results from molecular phylogenetic analyses strongly supported and clearly confirmed its status as a new of the genus Derris.

Keywords

anatomy, Derris, HPLC fingerprint, molecular phylogeny, morphology, phytochemical