Abstract
Camellia hainingii S.X.Yang et Y.S. Huang, a new species from Guangxi, China, is described and illustrated. It is morphologically similar to C. pachyandra Hu but can be easily distinguished from the latter by its glabrous leaf blade (vs. pubescent along the midvein abaxially), glabrous (vs. pubescent) petiole, bracteoles and sepals 9–11 (vs. 6) with dense pubescent (vs. glabrous) on the inner face, stamens 80–110 (vs. 40–50), slender (vs. thickening) inner filaments, glabrous (vs. dense tomentum) ovary and furfuraceous (vs. smooth) pericarp. The conservation status of this new species was assessed as Critically Endangered (CR).
References
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<p>IUCN Standards and Petitions Subcommittee (2019) Guidelines for using the IUCN Red List Categories and Criteria. Version 15. Prepared by the Standards and Petitions Committee. Available from: http://www.iucnredlist.org/documents/RedList-Guidelines.pdf (accessed July 2022).</p>
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<p>Ly, N.S., Luong, V.D.,Le, T.H., Do, N.D., Tran, N., Nguyen, A.D., Nguyen, T.L., Uematsu, C. & Katayama, H. (2022) <em>Camellia annamensis</em> (Theaceae), a new species from central Vietnam. <em>Taiwania</em> 67 (2): 243‒249. https://taiwania.ntu.edu.tw/pdf/tai.2022.67.243</p>
<p>Ming, T.L. (1999) A systematic synopsis of the genus <em>Camellia</em>. <em>Acta Botanica Yunnanica</em> 21 (2): 149–159.</p>
<p>Ming, T.L. (2000) <em>Monograph of the genus Camellia</em>. Yunnan Science and Technology Press, Kunming, 352 pp.</p>
<p>Ming, T.L. & Bartholomew, B. (2007) Theaceae.<em> In: </em>Wu, C.Y., Raven, P.H. & Hong, D.Y. (Eds.) <em>Flora of China</em> 12. Science Press, Beijing & Missouri Botanical garden Press, St. Louis, pp. 367–412.</p>
<p>Nguyen, D.H., Luong, V.D., Le, T.H., Tran, Q.T., Do, N.D. & Ly, N.S. (2020) <em>Camellia puhoatensis</em> (sect. <em>Archecamellia</em>-Theaceae), a new species from Vietnam. <em>PhytoKeys</em> 153, 1–11. https://doi.org/10.3897/phytokeys.153.49388</p>
<p>Orel, G. & Curry, A.S. (2015) <em>In pursuit of hidden camellias: 32 new camellia species from Vietnam and China</em>. Theaceae Exploration Associates, Sydney, 339 pp.</p>
<p>Orel, G. & Curry, A.S. (2019) <em>Camellia: work in progress</em>. Theaceae Exploration Associates, Sydney, 457 pp.</p>
<p>Quach, V.H., Luong, V.D., Doudkin, R.V., Averyanov, L.V., Bui, B.T., Nguyen, T.L. & Luu, H.T. (2021) <em>Camellia proensis</em> (Theaceae, sect. <em>Piquetia</em>), a new species from southern Vietnam. <em>Phytotaxa</em> 479 (1): 137–141. https://doi.org/10.11646/phytotaxa.479.1.12</p>
<p>Sealy, J.R. (1958) <em>A revision of the genus Camellia</em>. The Royal Horticultural Society, London, 239 pp.</p>
<p>Souladeth, P., Tagane, S. & Yahara, T. (2019) Flora of Nam Kading National Protected Area V: Two new species of <em>Camellia</em> (Theaceae), <em>C. namkadingensis</em> and <em>C. rosacea</em>. <em>Thai Forest Bulletin (Botany)</em> 47: 82–90. https://doi.org/10.20531/tfb.2019.47.1.12</p>
<p>Truong, Q.C., Luong, V.D., Le, V.S., Tran, N. & Curry, A. (2020) <em>Camellia bidoupensis</em> – A new species of <em>Camellia</em> section <em>Theopsis</em> (Theaceae) from Bidoup Nui Ba National Park in Vietnam. <em>International Camellia Journal</em> 52:125–128.</p>
<p>Truong, H.T., Van Hoi, Q., Le Van Son, T.Q.C. & Lieu, N.T. (2022) The diversity of yellow camellias in the central highlands, Vietnam. <em>Dalat University Journal of Science</em> 12 (3): 56–69. https://doi.org/10.37569/DalatUniversity.12.3.952(2022)</p>
<p>Yu, X.Q., Liu, E.D., Liu, Z.W., Xiao, B., Ma, J.L. & Yang, S.X. (2021) <em>Camellia luteocalpandria</em> (Theaceae), a new species and the first discovery of sect. <em>Calpandria</em> in China. <em>Phytotaxa</em> 489 (2): 223–228. https://doi.org/10.11646/phytotaxa.489.2.11</p>
<p>Chang, H.T. & Ren, S.X. (1998) Theaceae (1) Theoideae 1. <em>Camellia</em>.<em> In: </em>Chang, H.T. (Ed.) <em>Flora Reipublicae Popularis Sinicae </em>49 (3). Science Press, Beijing, pp. 3–195.</p>
<p>Hoang, T.T, Le, H.E., Nguyen, T.L. (2022) <em>Camellia thuanana</em> (<em>Camellia</em> sect. <em>Chrysantha</em>)–A new species from the Central Highlands, Vietnam. <em>Dalat University Journal of Science</em> 12 (3): 18–26. https://doi.org/10.37569/DalatUniversity.12.3.931(2022)</p>
<p>Hu, H.H. (1938) Notulae systematicae ad florem Sinensium IX. <em>Bulletin of the Fan Memorial Institute of Biology (Botany)</em> 8: 129–137.</p>
<p>IUCN Standards and Petitions Subcommittee (2019) Guidelines for using the IUCN Red List Categories and Criteria. Version 15. Prepared by the Standards and Petitions Committee. Available from: http://www.iucnredlist.org/documents/RedList-Guidelines.pdf (accessed July 2022).</p>
<p>Le, N.H.N., Luong, V.D., Nguyen, V.C., Pham, T.T.D., Luu, T.T. & Pham, V.T. (2020) An updated checklist of Theaceae and a new species of <em>Polyspora</em> from Vietnam. <em>Taiwania </em>65 (2): 216‒227. https://doi.org/10.1007/s12228-020-09646-5</p>
<p>Le, V.S., Curry, A., Truong, C., Luong, V.D. & Nguyen, T.L. (2021) <em>Camellia flosculora</em>: A new species of <em>Camellia</em> section <em>Thea</em> series <em>Sinensis</em> (Theaceae) from Vietnam. <em>Brittonia</em> 73 (2): 220–228. https://doi.org/10.1007/s12228-020- 09646-5</p>
<p>Liu, Z.W., Fang, W., Liu, E.D., Zhao, M., He, Y.F. & Yang, S.X. (2019) <em>Camellia mingii</em>, a new species of yellow camellias from Southeast Yunnan, China. <em>Phytotaxa</em> 393 (1): 47–56. https://doi.org/10.11646/phytotaxa.393.1.4</p>
<p>Liu, Z.W., Chai, S.F., Wu, F.Y., Ye, P.M., Jiang, C.J., Zhang, Z.R., Yu, X.Q., Ma, J.L. & Yang, S.X. (2020a) <em>Camellia rostrata, </em>a new species of yellow camellias from Southwest China. <em>Phytotaxa</em> 459 (1): 061–068. https://doi.org/10.11646/phytotaxa.459.1.6</p>
<p>Liu, Z.W., Ye, P.M., Li, Z.H., Wei, X.J., Liu, E.D., Zhang, Z.R., Ma, J.L. & Yang, S.X. (2020b) <em>Camellia zhaiana </em>(sect.<em> Longipedicellata</em>), a new species of Theaceae from Guangxi, China. <em>Phytotaxa</em> 460 (3): 225–229. https://doi.org/10.11646/phytotaxa.460.3.5</p>
<p>Ly, N.S., Luong, V.D.,Le, T.H., Do, N.D., Tran, N., Nguyen, A.D., Nguyen, T.L., Uematsu, C. & Katayama, H. (2022) <em>Camellia annamensis</em> (Theaceae), a new species from central Vietnam. <em>Taiwania</em> 67 (2): 243‒249. https://taiwania.ntu.edu.tw/pdf/tai.2022.67.243</p>
<p>Ming, T.L. (1999) A systematic synopsis of the genus <em>Camellia</em>. <em>Acta Botanica Yunnanica</em> 21 (2): 149–159.</p>
<p>Ming, T.L. (2000) <em>Monograph of the genus Camellia</em>. Yunnan Science and Technology Press, Kunming, 352 pp.</p>
<p>Ming, T.L. & Bartholomew, B. (2007) Theaceae.<em> In: </em>Wu, C.Y., Raven, P.H. & Hong, D.Y. (Eds.) <em>Flora of China</em> 12. Science Press, Beijing & Missouri Botanical garden Press, St. Louis, pp. 367–412.</p>
<p>Nguyen, D.H., Luong, V.D., Le, T.H., Tran, Q.T., Do, N.D. & Ly, N.S. (2020) <em>Camellia puhoatensis</em> (sect. <em>Archecamellia</em>-Theaceae), a new species from Vietnam. <em>PhytoKeys</em> 153, 1–11. https://doi.org/10.3897/phytokeys.153.49388</p>
<p>Orel, G. & Curry, A.S. (2015) <em>In pursuit of hidden camellias: 32 new camellia species from Vietnam and China</em>. Theaceae Exploration Associates, Sydney, 339 pp.</p>
<p>Orel, G. & Curry, A.S. (2019) <em>Camellia: work in progress</em>. Theaceae Exploration Associates, Sydney, 457 pp.</p>
<p>Quach, V.H., Luong, V.D., Doudkin, R.V., Averyanov, L.V., Bui, B.T., Nguyen, T.L. & Luu, H.T. (2021) <em>Camellia proensis</em> (Theaceae, sect. <em>Piquetia</em>), a new species from southern Vietnam. <em>Phytotaxa</em> 479 (1): 137–141. https://doi.org/10.11646/phytotaxa.479.1.12</p>
<p>Sealy, J.R. (1958) <em>A revision of the genus Camellia</em>. The Royal Horticultural Society, London, 239 pp.</p>
<p>Souladeth, P., Tagane, S. & Yahara, T. (2019) Flora of Nam Kading National Protected Area V: Two new species of <em>Camellia</em> (Theaceae), <em>C. namkadingensis</em> and <em>C. rosacea</em>. <em>Thai Forest Bulletin (Botany)</em> 47: 82–90. https://doi.org/10.20531/tfb.2019.47.1.12</p>
<p>Truong, Q.C., Luong, V.D., Le, V.S., Tran, N. & Curry, A. (2020) <em>Camellia bidoupensis</em> – A new species of <em>Camellia</em> section <em>Theopsis</em> (Theaceae) from Bidoup Nui Ba National Park in Vietnam. <em>International Camellia Journal</em> 52:125–128.</p>
<p>Truong, H.T., Van Hoi, Q., Le Van Son, T.Q.C. & Lieu, N.T. (2022) The diversity of yellow camellias in the central highlands, Vietnam. <em>Dalat University Journal of Science</em> 12 (3): 56–69. https://doi.org/10.37569/DalatUniversity.12.3.952(2022)</p>
<p>Yu, X.Q., Liu, E.D., Liu, Z.W., Xiao, B., Ma, J.L. & Yang, S.X. (2021) <em>Camellia luteocalpandria</em> (Theaceae), a new species and the first discovery of sect. <em>Calpandria</em> in China. <em>Phytotaxa</em> 489 (2): 223–228. https://doi.org/10.11646/phytotaxa.489.2.11</p>