Camellia tuyenquangensis (Theaceae), a new species from Vietnam

Abstract

Camellia tuyenquangensis (Theaceae), a new yellow species of camellia from the Chiem Hoa district of the Tuyen Quang province in Vietnam, is described and illustrated. Camellia tuyenquangensis is similar to Camellia luongii but different from the latter species in several morphological features: leaves oblong-ovate to narrow elliptic; flowers 1-2; bracteoles glabrous on both sides; sepal margins ciliate; style cleft one half of the length. The morphological data provisionally support its placement in Camellia sect. Chrysantha Chang.

Camellia puhoatensis (Sect. Archecamellia – Theaceae), a new species from Vietnam

“…So far, more than 75 species of Camellia have been reported in Vietnam, with many localised endemic species (e.g. Pitard 1910;Gagnepain 1941;Rosmann 1999;Tran 1998a, b;Pham 2000;Hakoda and Tran 2001;Hakoda et al 2007;Orel 2006;Orel andWilson 2010a, b, 2012a, b;Orel and Curry 2014;Orel et al 2012Orel et al , 2013Orel et al , 2014aLuong 2012, 2013;Le 2013, 2015;Luu et al 2015Luu et al , 2018Luong et al 2016a, b;Le et al 2017;Nguyen et al 2018;Pham et al 2019;Do et al 2019a, b), but the actual number is expected to be higher in the near future Luong 2016, Do et al 2019b).…”

“…During recent extensive floristic surveys in the North Central coastal region in Vietnam, several interesting species of Camellia in yellow flower were collected by one of us (N.-D. Do) and colleagues in 2018-2019 (e.g. Tran and Luong 2013;Tran and Le 2015;Luong et al 2016a, b;Le et al 2017;Nguyen et al 2018;Pham et al 2019;Do et al 2019a, b). Critical examination of living flowers, dried specimens and comparison with type material and protologues of all related yellow Camellia in Vietnam and China (e.g.…”

Camellia velutina (Theaceae, Sect. Chrysantha), a new species from northern Vietnam

“…In addition, two new Vietnamese species belonging to Chrysantha section, namely C. ninhii and C. tuyenquangensis were described and published during last two years. Le et al, 2017).…”

“…The species had yellow flowers typical for species of Chrysantha section. After study of relevant literatures on all species of this section (Sealy, 1958;Chang & Bartholomew, 1984;Tran, 1998 a, b ;Tran & Hakoda, 1998;Pham, 1999;Ming, 2000;Gao et al, 2005;Hakoda et al, 2007;Ming & Bartholomew, 2007;Tran & Le, 2013;Yang et al, 2014;Le et al, 2017) and specimens in largest national herbariums, such as DLU, HN, HNU, VNM, VNMN we did not find any species, which could fit well with our specimens. In early of 2017 we collected more specimens of mentioned species in locus classicus.…”

Camellia debaoensis (Theaceae), a new species of yellow camellia from limestone karsts in southwestern China

“…In recent years, many new species of yellow camellia have been reported from northern Vietnam and southern China (e.g. Tran and Nguyet 2005; Orel 2006; Orel and Wilson 2010, 2012; Orel et al 2012, 2013, 2014a, b; Tran et al 2012; Tran and Luong 2013; Huang et al 2014; Orel and Curry 2015; Tran and Le 2015; Luu et al 2015; Dung et al 2016; Luong and Le 2016; Luong et al 2016a, b; Le et al 2017; Nguyen et al 2018; Liu et al 2019), increasing the total to more than 50 species (Tran et al 2019) and making northern Vietnam another center of yellow camellia diversity. Generally, yellow camellias are rare and highly endemic due to their small population, narrow distribution and excessive gathering.…”