Quercus lineata (Fagaceae): new distribution records from China and Vietnam and its leaf anatomical features

Abstract

Quercus lineata is native to Malaysia and Indonesia. During our studies on herbarium collections and field collections, two new distribution records of Q. lineata were found in Hainan island, South China and Central Vietnam. All the key diagnostic features of the specimens from China and Vietnam were consistent with the specimens collected from Malaysia. The leaf anatomical features of the populations of different regions were compared. We also addressed the conservation status and biogeographic implications of the distribution of Q. lineata.

A new species and two new records of Quercus (Fagaceae) from northern Vietnam

“…Amongst them, during the field surveys in Xuan Lien Nature Reserve and Ba Vi National Park (Fig. 1 ), we discovered three unknown species of the subgenus Cyclobalanopsis which were not identical to any of the 38 species of Cyclobalanopsis previously recorded from Vietnam ( Ho 2003 , Ban 2005 , Li et al 2016 , Binh et al in press ).…”

“…The validity of a new species and the identities of newly recorded species were examined based on literature of the genus Quercus in Vietnam and its surrounding countries ( Camus 1936–1954 , Soepadmo 1972 , Ho 2003 , Huang et al 1999 , Ban 2005 , Phengklai 2008 , Li et al 2016 , Binh et al in press ), authentic specimens including types by visiting the herbaria DLU, HN, FU, P and VNM and using images available on the web of JSTOR Global Plants ( https://plants.jstor.org/ ) and Chinese Virtual Herbarium ( http://www.cvh.org.cn/ ).…”

“…Recently, the following two species were reported and the species of Quercus in Vietnam rose to 45 species: Q. lineata Blume of subgenus Cyclobalanopsis ( Li et al 2016 ) and Q. trungkhanhensis Binh & Ngoc of subgenus Quercus ( Binh et al in press ).…”

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

“…The genus Quercus contains more than 500 species worldwide, amongst which about 400 species from the Americas, Europe, North Africa and Macaronesia and about 125 species were reported from Asia ( Govaerts and Frodin 1998 ; Borazan and Babaç 2003; Hubert et al 2014 ), 50 of which are distributed in Vietnam ( Ho 2003 ; Ban 2005 ; Li et al 2016 ; Binh et al 2018a , b , c ; Binh et al 2021 ). Quercus species are usually trees or sometimes shrubs that mostly occur in tropical montane forests in Southeast Asia and are often dominant in temperate deciduous forests in East Asia, Europe, North America, the Mediterranean and in desert scrubs of North America ( Nixon 1993 ; Huang et al 1999 ; Phengklai 2008 ; Hubert et al 2014 ; Valencia-A et al 2016 ).…”

Variations in morphological and epidermal features of shade and sun leaves of two species: Quercus bambusifolia and Q. myrsinifolia

“…The genus Quercus L. (oaks, Fagaceae) is of great research interest in the field of leaf morphology (e.g., Jensen, 1977, 1988, 1990; Knops and Jensen, 1980; Jensen et al, 1984, 1993; Castro‐Díez et al, 1997; Kremer et al, 2002; Luo and Zhou, 2002; Borazan and Babaç, 2003; Zwieniecki et al, 2004; Gonzalez‐Rodriguez and Oyama, 2005; Rodríguez and Romero, 2007; Scareli‐Santos et al, 2007; Boratynski et al, 2008; Viscosi et al, 2009a, 2009b, 2010, 2011; Song et al, 2015; Viscosi, 2015; Sun et al, 2016; Binh et al, 2018a; Gailing et al, 2018; Liu et al, 2018; Stephan et al, 2018) as well as anatomy (e.g., Llamas et al, 1995; Bussotti and Grossoni, 1997; Luo and Zhou, 2001; Batos et al, 2010; Panahi et al, 2012a, 2012b, 2012c; Deng et al, 2013b, 2014, 2015a, 2015b, 2017; Hu et al, 2014; Shahbaz et al, 2015; Li et al, 2016; Liu et al, 2016; Binh et al, 2018a) due to it encompassing a high number of species, great morphological variability, and widespread hybridization and introgression (e.g., Valbuena‐Carabaña et al, 2005; Curtu et al, 2007; Salvini et al, 2009; Moran et al, 2012; Gerber et al, 2014; Simeone et al, 2018).…”