A new species of Quercus genus (Fagaceae) from Son Tra Peninsula, Central Vietnam

Abstract

A new species, Quercus sontraensis Ngoc, Binh & Son is described from Son Tra Nature Reserve, Son Tra Peninsula, Central Vietnam. We examined the morphology and constructed a highly resolved phylogeny of Q. sontraensis and its relatives (including Q. langbianensis and Q. cambodiensis) using Multiplex ISSR genotyping by sequencing (MIG-seq). The morphological analyses and molecular evidence support the distinction between the new species (Q. sontraensis) and its relatives.

Quercus mangdenensis, a new species of Quercus (Fagaceae) from Kon Tum Province, Vietnam

“…To confirm that the species was undescribed, the relevant literature including Camus (1934), Soepadmo (1972), Huang et al (1999), Ho (2003, Ban (2005), and Phengklai ( 2008), Binh et al 2018a, b, c;Binh et al 2021;Ngoc et al 2022 were consulted. Then, we examined specimens in the herbaria at DLU, K, P, and VNM as well as digital images on the websites of JSTOR Global Plants (https://plants.jstor.org/) and the Chinese Virtual Herbarium (http://www.cvh.ac.cn/).…”

“…Quercus L. is the biggest genus of the family Fagaceae, comprising more than 500 species widely distributed in Europe, North America, the Mediterranean, temperate deciduous forests in East Asia, and tropical montane forests in Southeast Asia (Nixon 1993;Huang et al 1999;Phengklai 2008;Hubert et al 2014;Valencia-A et al 2016). In Vietnam, a total of 52 Quercus species have been reported (Ho 2003;Ban 2005;Li et al 2016;Binh et al 2018a, b, c;Binh et al 2021;Ngoc et al 2022), of which, recent efforts in taxonomic works of the genus Quercus have resulted in the description of seven new species from Vietnam (Binh et al 2018a, b, c;Binh et al 2021;Ngoc et al 2022), indicating that the species diversity of Quercus of the country is significant. Therefore, taxonomic studies of the Vietnamese Quercus are still required.…”

Phylogenetic relationships of Quercus species (Fagaceae) in Vietnam based on multiplexed inter simple sequence repeat genotyping by sequencing

“…Vietnam is one of the biodiversity hotspots in the world with approximately 50 species of Quercus. The previous studies of this genus mainly focused on the taxonomic work, utilizing both morphological and molecular evidence (Camus, 1936(Camus, -1954Ho, 2003;Ban, 2005;Li et al, 2016;Binh et al, 2018a, b, c;Binh et al, 2021., Ngoc et al, 2022a. Those studies confirmed the species diversity of the Vietnamese Oak.…”