Notes on Phylogeny of the Genus Chiloschista Lindl. (Orchidaceae) in Thailand

EasyChair Preprint no. 9662

Abstract

The genus Chiloschista Lindl. belongs to subtribe Aeridinae, family Orchidaceae. It is a leafless epiphytic orchid, which is one of the popular orchid, especially in Thailand. Due to floral variation, there is some doubt about species delimitation especially C. usneoides, C. parishii, C. viridiflava group. Thus, this study was conducted to employ the molecular evident to clarify the species of Chiloschista. Sequences of matK and ITS regions of 8 species of Chiloschista collected from natural habitats in Thailand were used to construct the phylogenetic tree. Three endemic species from Thailand have been firstly sequenced, C extinctoriformis, C. exuperei, and C. rodiguezii. The result showed that Chiloschista is a monophyletic group as indicated in the previous study. The infrageneric relationship has not shown any subclade. The similar species based on morphology are well separated with higher statistic support. This molecular phylogenetic has supported the morphological species concept from previous study.

Keyphrases: Chiloschista, leafless epiphyte, molecular phylogeny, Orchidaceae

@Booklet{EasyChair:9662,
  author = {Thotsaporn Chanokkhun and Tammanoon Jitpromma and Nooduan Muangsan and Santi Watthana},
  title = {Notes on Phylogeny of the Genus Chiloschista Lindl. (Orchidaceae) in Thailand},
  howpublished = {EasyChair Preprint no. 9662},

  year = {EasyChair, 2023}}