Section：Chrysantha
Conservation Status：
Remarks：This name is accepted
References：
Camellia tuyenquangensis V.D.Luong, Le & Ninh. Korean J. Pl. Taxon. 47: 95 (2017) Accepted Name
» Description
Camellia tuyenquangensis V.D.Luong, Le & Ninh. Korean J. Pl. Taxon. 47: 95 (2017)
The specimen was first discovered by Luong Van Dung in 2016 in Chiem Hoa district, Tuyen Quang province. In 2017, a group of authors Le Nguyet Hai Ninh, Chiyomi Uematsu, Hironori Katayama, Nguyen Thi Lieu, Tran Ninh, Luong Van Dung and Hoang Thanh Son published in the Korean Journal of Plant Taxonomy with the scientific name Camellia tuyenquangensis. The Vietnamese name is Tra Tuyen Quang, after the provincial place where the specimen was first discovered.
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.
TYPE: VIETNAM. Tuyen Quang province: Chiem Hoa district, 25 Oct 2016 (fl), Luong Van Dung 161101 (holotype, DLU; isotype, SING)
Etymology: The specific epithet of the new species refers to the location of discovery, Tuyen Quang province, Vietnam.
Distribution and phenology: This species was found in the forest of Chiem Hoa district, Tuyen Quang province, at the elevations of 500–800 m. It was collected with the flowers in October. No mature capsules or seeds were evident.
IUCN Red List category The Area of Occupancy (AOO) for C. tuyenquangensis is estimated to be less than 1 km2 . Despite a thorough survey of the area around the type locality, only eight additional mature trees were found. The total known population of the species is consisted of fewer than 50 indivuduals, and it would be qualified as Critically Endangered (CR) under criterion D (IUCN, 2011).
» Distribution
VIETNAM. Tuyen Quang province: Chiem Hoa district
» Description
杜延光山茶 Camellia tuyenquangensis V.D.Luong, Le & Ninh. Korean J. Pl. Taxon. 47: 95 (2017)。
该标本由 Luong Van Dung 于 2016 年在杜延光省（Tuyen Quang province) Chiem Hoa 县首次发现。2017 年，由 Le Nguyet Hai Ninh、Chiyomi Uematsu、Hironori Katayama、Nguyen Thi Lieu、Tran Ninh、Luong Van Dung 和 Hoang Thanh Son 组成的作者小组在《韩国植物分类学杂志》（Korean Journal of Plant Taxonomy）上发表了该植物的学名 Camellia tuyenquangensis。越南语名称为 Tra Tuyen Quang，与首次发现该标本的省名相同。
» Distribution
越南杜延光省
Species in the Same Section: 中东金花茶 Camellia achrysantha H.T.Chang et S.Y .Liang、五室金花茶 Camellia aurea Hung T.Chang、厚叶金花茶 Camellia crassiphylla Ninh et Hakoda、菊芳金花茶 Camellia cucphuongensis Ninh & Rosmann、云南金花茶 Camellia fascicularis Hung T.Chang、黄花茶 Camellia flava (Pit.) Sealy、淡黄金花茶 Camellia flavida、弄岗金花茶 Camellia grandis (C.F.Liang & S.L.Mo) Hung T.Chang & S.Ye Liang 、贵州金花茶 Camellia huana T.L.Ming & W.J.Zhang、胡龙金花茶 Camellia huulungensis Rosmann & Ninh、凹脉金花茶 Camellia impressinervis Hung T.Chang & S.Ye Liang、薄瓣金花茶 Camellia leptopetala Chang & S.Y.Liang、柠檬黄金花茶 Camellia limonia C.F.Liang & S.L.Mo、陇瑞金花茶 Camellia longruiensis S. Y. Liang et X. J. Dong、龙州金花茶 Camellia longzhouensis J.Y.Luo、小花金花茶 Camellia micrantha S.Ye Liang & Y.C.Zhong、多瓣金花茶 Camellia multipetala S.Ye Liang & C.Z.Deng、防城金花茶 Camellia nitidissima C. W. Chi、小果金花茶 Camellia chrysantha (Hu)Tuyama var. microcarpa S. L. Mo et S. Z. Huang、小瓣金花茶 Camellia parvipetala、平果金花茶 Camellia pingguoensis D.Fang、顶生金花茶 Camellia pingguoensis var. terminalis (J.Y.Liang & Z.M.Su) T.L.Ming & W.J.Zhang、毛籽金花茶 Camellia ptilosperma S.Yun Liang & Q.D.Chen、毛瓣金花茶 Camellia pubipetala Y.Wan & S.Z.Huang、罗斯曼金花茶 Camellia rosmannii Ninh、三岛金花茶 Camellia tamdaoensis Hakoda et Ninh 、天峨金花茶 Camellia tianeensis S.Ye Liang & Y.T.Luo、东兴金花茶 Camellia tunghinensis Hung T.Chang、夏石金花茶 Camellia xiashiensis S.Yun Liang & C.Z.Deng、中越山茶 Camellia indochinensis Merr.、德保金花茶 Camellia debaoensis R.C.Hu & Y.Q.Liufu、富宁金花茶 Camellia mingii S.X.Yang、四季花金花茶 Camellia perpetua S. Y. Liang et L. D. Huang、潘氏金花茶 Camellia phanii Hakoda & Ninh、越南小花金花茶 Camellia minima Orel & Curry、红顶金花茶 Camellia insularis Orel & Curry、多毛金花茶 Camellia hirsuta Hakoda & Ninh、箱田金花茶 Camellia hakodae Ninh, Tr.、武鸣金花茶 Camellia wumingensis S.Ye Liang & C.R.Fu ex Hai L.Chen、隆安金花茶 Camellia rostrata S.X.Yang & S.F.Chai、奥康纳山茶 Camellia oconoriana Orel, Curry & Luu、国顺山茶 Camellia thuongiana V.D.Luong, A.Le & T.L.Nguyen、威尔克斯山茶 Camellia wilkesiana Orel & Curry、弄岗金花茶 Camellia longgangensis C.F.Liang & S.L.Mo、金花茶 Camellia chrysantha (Hu) Tuyama、崇左金花茶 Camellia chuongtsoensis S.Y. Liang et. L. D. Huang 、和平山茶 Camellia hoabinhensis V.D.Luong, Ninh & V.T.Pham、梁氏金花茶 Camellia luongii Ninh & Le、聪顺金花茶 Camellia thuanana T.T. Hoang、细毛茶 Camellia velutina V.T.Pham, V.D.Luong & Aver、婉丽金花茶 Camellia concinna Orel & Curry、毛花金花茶 Camellia piloflora S.X.Yang、先安金花茶 Camellia tienyenensis Orel & Curry、密毛金花茶 Camellia tomentosa Orel & Curry、伊丽莎白金花茶 Camellia elizabethae Orel & Curry、佛朗西斯茶 Camellia andrefrancisii Orel & Curry
