Abstract
Tupistra thangii, a new species from Lam Dong Province, southern Vietnam, is described and illustrated. It is most similar to T. clarkei from eastern Nepal and northeastern India, but differs mainly in its broader leaves, upright or ascending spike, smaller flowers, laterally strongly revolute perianth lobes, stamens adnate to the subbasal portion of the perianth lobes, and whitish stigma. It also shares some key traits (e.g. internally white-striped, dark purple perianth tube) with T. natmataungensis from western Myanmar. Notes on the phenology, habitat, distribution and taxonomic relationships to several similar species are also provided.
References
<p>Averyanov, L.V. & Tanaka, N. (2012) New species of <em>Peliosanthes</em> and <em>Tupistra</em> (Aparagaceae) from eastern Indochina. <em>Taiwania</em> 57 (2): 153–167. [http://tai2.ntu.edu.tw/taiwania/pdf/tai.2012.57.153.pdf]</p>
<p>Averyanov, L.V., Тanaka, N., Nguyen, K.S., Nguyen, H.T. & Konstantinov, E.L. (2015) New species of <em>Ophiopogon</em> Ker Gawl., <em>Peliosanthes</em> Andrews and <em>Tupistra </em>Ker Gawl. (Asparagaceae) in the flora of Laos and Vietnam. <em>Adansonia</em>, sér. 3, 37 (1): 25–45. https: //doi.org/10.5252/a2015n1a4</p>
<p>Averyanov, L.V., Тanaka, N., Nguyen, K.S., Truong, B.V., Nghiem, D.T. & Nguyen, T.H. (2016) New species of <em>Ophiopogon</em>, <em>Peliosanthes</em> and <em>Tupistra</em> (Asparagaceae s.l.) in the flora of Vietnam. <em>Nordic Journal of Botany</em> 34 (1): 23–37. https://doi.org/10.1111/njb.00854</p>
<p>Averyanov, L.V., Тanaka, N., Son, H.T., Nguyen, K.S., Maisak, T.V., Nguyen, T.H & Peng, C.I. (2017) <em>Tupistra cardinalis</em> (Asparagaceae), a new species from limestone areas in northern Vietnam. <em>Phytotaxa </em>334 (1): 060–064. https://doi.org/10.11646/phytotaxa.334.1.9</p>
<p>Averyanov, L.V., Tanaka, N., Nguyen, K.S. & Maisak, T.V. (2019) A new species and a new combination in <em>Tupistra</em> (Asparagaceae). <em>Taiwania</em> 64 (3): 280–284. https://doi.org/10.6165/tai.2019.64.280</p>
<p>Averyanov, L.V., Nguyen, K.S., Nuraliev, M.S., Vislobokov, N.A., Tanaka, N., Kopylov-Guskov, Y.O., Lyskov, D.F., Maisak, T.V., Nguyen, Q.H., Kuznetsov, A.N., Kuznetsova, S.P. & Thai, T.H. (2020) <em>Tupistra nganii</em> (Asparagaceae), a new species with greenish yellow flowers from northern Vietnam and southwestern China. <em>Phytotaxa</em> 449 (2): 173–180. https://doi.org/10.11646/phytotaxa.449.2.5</p>
<p>Beentje, H.J. (2016) <em>The Kew plant glossary: an illustrated dictionary of plant terms</em>, 2nd edition. Royal Botanic Gardens, Richmond, 192 pp.</p>
<p>Chase, M.W., Reveal, J.L. & Fay, M.F. (2009) A subfamilial classification for the expanded asparagalean families Amaryllidaceae, Asparagaceae and Xanthorrhoeaceae. <em>Botanical Journal of the Linnean Society</em> 161 (2): 132–136. https://doi.org/10.1111/j.1095-8339.2009.00999.x</p>
<p>Dandy, J.E. (1932) <em>Tupistra tupistroides</em> (Kunth) Dandy. <em>Journal of Botany, British and Foreign, London</em> 70: 329.</p>
<p>Ding, H.B., Yang, B., Zhou, S.S., Maw, M.B. & Maung, K.W. (2019) New contributions to the flora of Myanmar I. <em>Plant Diversity</em> 41 (3): 135–152. https://doi.org/10.1016/j.pld.2019.05.002</p>
<p>Harris, J.G. & Harris, M.W. (1994) <em>Plant identification terminology: an illustrated glossary</em>. Spring Lake Publishing, Spring Lake, 197 pp.</p>
<p>Hooker, J.D. (1892) <em>Flora of British India</em> 6 (part 18), L. Reeve & Co., London, pp. 225–448.</p>
<p>Hu, G., Li, H., Tan, Y., Liu, Y. & Long, C. (2013) <em>Tupistra hongheensis</em> (Ruscaceae), a new species from Yunnan, China based on morphological, karyotypic, and pollen morphological studies. <em>Journal of Systematics and Evolution</em> 51 (2): 230. https://doi.org/ 230. 10.1111/jse.12008_6</p>
<p>IUCN (2022) <em>Guidelines for using the IUCN red list categories and criteria</em>, version 15. Prepared by the Standards and Petitions Committee. Available from: https://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 15 March 2022)</p>
<p>Ker Gawler, J.B. (1814) <em>Tupistra squalida</em>. <em>Curtis’s Botanical Magazine</em> 40: pl. 1655.</p>
<p>Ker Gawler, J.B. (1822) <em>Aspidistra lurida</em>. <em>Botanical Register</em> 8: pl. 628.</p>
<p>Hickey, M. & King, C. (2000) <em>The Cambridge illustrated glossary of botanical terms</em>. Cambridge University Press, Cambridge, 208 pp.</p>
<p>Kunth, C.S. (1850) <em>Enumeratio Plantarum</em> 5. Sumtibus J.G. Cottae, Stutgardiae et Tubingae, 908 pp.</p>
<p>Nguyen, K.S., Averyanov, L.V., Tanaka, N., Konstantinov, E.L., Maisak, T.V. & Nguyen, H.T. (2017) New taxa of <em>Peliosanthes</em> and <em>Tupistra</em> (Asparagaceae) in the flora of Laos and Vietnam and supplemental data for <em>T. patula</em>. <em>Phytotaxa</em> 312 (2): 199–212. https://doi.org/10.11646/phytotaxa.312.2.3</p>
<p>Odyuo, N., Roy, D.K. & Mao, A.A. (2018) <em>Tupistra nagarum</em> (Asparagaceae), a new species from Nagaland, North-eastern India. <em>Nelumbo</em> 60 (1): 1–5. http://dx.doi.org/10.20324/nelumbo/v60/2018/120924</p>
<p>Roth, A.W. (1821) <em>Novae Plantarum Species praesertim Indiae Orientalis</em>. Sumptibus H. Vogleri, Halberstaddii, 411 pp.</p>
<p>Roy, D.K., Mao, A.A. & Averyanov, L.V. (2017) <em>Tupistra khasiana</em> (Asparagaceae), a new species from Meghalaya, India. <em>Taiwania</em> 62 (3): 257–260. http://dx.doi.org/10.6165/tai.2017.62.257</p>
<p>Tanaka, N. (2010a) A taxonomic revision of the genus <em>Tupistra</em> (Asparagaceae). <em>Makinoa New Series </em>9: 55–93.</p>
<p>Tanaka, N. (2010b) A taxonomic revision of the genus <em>Rohdea</em> (Asparagaceae). <em>Makinoa New Series </em>9: 1–54.</p>
<p>Tanaka, N., Hannon, D.P. & Vislobokov, N.A. (2018) <em>Tupistra siphonantha</em> (Asparagaceae), a new species from Lao P.D.R. with a simple pistil. <em>Kew Bulletin</em> 73: 32. http://dx.doi.org/10.1007/S12225-018-9754-5</p>
<p>Vislobokov, N.A., Tanaka, N., Averyanov, L.V., Nguyen, H.T., Nuraliev, M.S. & Kuznetsov, A.N. (2014) <em>Tupistra khangii</em> (Asparagaceae), a new species from northern Vietnam. <em>Phytotaxa</em> 175 (5): 287–292. http://dx.doi.org/10.11646/phytotaxa.175.5.8</p>
<p>Wang, F.T. & Tang, T. (1978) <em>Flora Reipublicae Popularis Sinicae</em> 15. Science Press, Beijing, 280 pp.</p>
<p>Averyanov, L.V., Тanaka, N., Nguyen, K.S., Nguyen, H.T. & Konstantinov, E.L. (2015) New species of <em>Ophiopogon</em> Ker Gawl., <em>Peliosanthes</em> Andrews and <em>Tupistra </em>Ker Gawl. (Asparagaceae) in the flora of Laos and Vietnam. <em>Adansonia</em>, sér. 3, 37 (1): 25–45. https: //doi.org/10.5252/a2015n1a4</p>
<p>Averyanov, L.V., Тanaka, N., Nguyen, K.S., Truong, B.V., Nghiem, D.T. & Nguyen, T.H. (2016) New species of <em>Ophiopogon</em>, <em>Peliosanthes</em> and <em>Tupistra</em> (Asparagaceae s.l.) in the flora of Vietnam. <em>Nordic Journal of Botany</em> 34 (1): 23–37. https://doi.org/10.1111/njb.00854</p>
<p>Averyanov, L.V., Тanaka, N., Son, H.T., Nguyen, K.S., Maisak, T.V., Nguyen, T.H & Peng, C.I. (2017) <em>Tupistra cardinalis</em> (Asparagaceae), a new species from limestone areas in northern Vietnam. <em>Phytotaxa </em>334 (1): 060–064. https://doi.org/10.11646/phytotaxa.334.1.9</p>
<p>Averyanov, L.V., Tanaka, N., Nguyen, K.S. & Maisak, T.V. (2019) A new species and a new combination in <em>Tupistra</em> (Asparagaceae). <em>Taiwania</em> 64 (3): 280–284. https://doi.org/10.6165/tai.2019.64.280</p>
<p>Averyanov, L.V., Nguyen, K.S., Nuraliev, M.S., Vislobokov, N.A., Tanaka, N., Kopylov-Guskov, Y.O., Lyskov, D.F., Maisak, T.V., Nguyen, Q.H., Kuznetsov, A.N., Kuznetsova, S.P. & Thai, T.H. (2020) <em>Tupistra nganii</em> (Asparagaceae), a new species with greenish yellow flowers from northern Vietnam and southwestern China. <em>Phytotaxa</em> 449 (2): 173–180. https://doi.org/10.11646/phytotaxa.449.2.5</p>
<p>Beentje, H.J. (2016) <em>The Kew plant glossary: an illustrated dictionary of plant terms</em>, 2nd edition. Royal Botanic Gardens, Richmond, 192 pp.</p>
<p>Chase, M.W., Reveal, J.L. & Fay, M.F. (2009) A subfamilial classification for the expanded asparagalean families Amaryllidaceae, Asparagaceae and Xanthorrhoeaceae. <em>Botanical Journal of the Linnean Society</em> 161 (2): 132–136. https://doi.org/10.1111/j.1095-8339.2009.00999.x</p>
<p>Dandy, J.E. (1932) <em>Tupistra tupistroides</em> (Kunth) Dandy. <em>Journal of Botany, British and Foreign, London</em> 70: 329.</p>
<p>Ding, H.B., Yang, B., Zhou, S.S., Maw, M.B. & Maung, K.W. (2019) New contributions to the flora of Myanmar I. <em>Plant Diversity</em> 41 (3): 135–152. https://doi.org/10.1016/j.pld.2019.05.002</p>
<p>Harris, J.G. & Harris, M.W. (1994) <em>Plant identification terminology: an illustrated glossary</em>. Spring Lake Publishing, Spring Lake, 197 pp.</p>
<p>Hooker, J.D. (1892) <em>Flora of British India</em> 6 (part 18), L. Reeve & Co., London, pp. 225–448.</p>
<p>Hu, G., Li, H., Tan, Y., Liu, Y. & Long, C. (2013) <em>Tupistra hongheensis</em> (Ruscaceae), a new species from Yunnan, China based on morphological, karyotypic, and pollen morphological studies. <em>Journal of Systematics and Evolution</em> 51 (2): 230. https://doi.org/ 230. 10.1111/jse.12008_6</p>
<p>IUCN (2022) <em>Guidelines for using the IUCN red list categories and criteria</em>, version 15. Prepared by the Standards and Petitions Committee. Available from: https://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 15 March 2022)</p>
<p>Ker Gawler, J.B. (1814) <em>Tupistra squalida</em>. <em>Curtis’s Botanical Magazine</em> 40: pl. 1655.</p>
<p>Ker Gawler, J.B. (1822) <em>Aspidistra lurida</em>. <em>Botanical Register</em> 8: pl. 628.</p>
<p>Hickey, M. & King, C. (2000) <em>The Cambridge illustrated glossary of botanical terms</em>. Cambridge University Press, Cambridge, 208 pp.</p>
<p>Kunth, C.S. (1850) <em>Enumeratio Plantarum</em> 5. Sumtibus J.G. Cottae, Stutgardiae et Tubingae, 908 pp.</p>
<p>Nguyen, K.S., Averyanov, L.V., Tanaka, N., Konstantinov, E.L., Maisak, T.V. & Nguyen, H.T. (2017) New taxa of <em>Peliosanthes</em> and <em>Tupistra</em> (Asparagaceae) in the flora of Laos and Vietnam and supplemental data for <em>T. patula</em>. <em>Phytotaxa</em> 312 (2): 199–212. https://doi.org/10.11646/phytotaxa.312.2.3</p>
<p>Odyuo, N., Roy, D.K. & Mao, A.A. (2018) <em>Tupistra nagarum</em> (Asparagaceae), a new species from Nagaland, North-eastern India. <em>Nelumbo</em> 60 (1): 1–5. http://dx.doi.org/10.20324/nelumbo/v60/2018/120924</p>
<p>Roth, A.W. (1821) <em>Novae Plantarum Species praesertim Indiae Orientalis</em>. Sumptibus H. Vogleri, Halberstaddii, 411 pp.</p>
<p>Roy, D.K., Mao, A.A. & Averyanov, L.V. (2017) <em>Tupistra khasiana</em> (Asparagaceae), a new species from Meghalaya, India. <em>Taiwania</em> 62 (3): 257–260. http://dx.doi.org/10.6165/tai.2017.62.257</p>
<p>Tanaka, N. (2010a) A taxonomic revision of the genus <em>Tupistra</em> (Asparagaceae). <em>Makinoa New Series </em>9: 55–93.</p>
<p>Tanaka, N. (2010b) A taxonomic revision of the genus <em>Rohdea</em> (Asparagaceae). <em>Makinoa New Series </em>9: 1–54.</p>
<p>Tanaka, N., Hannon, D.P. & Vislobokov, N.A. (2018) <em>Tupistra siphonantha</em> (Asparagaceae), a new species from Lao P.D.R. with a simple pistil. <em>Kew Bulletin</em> 73: 32. http://dx.doi.org/10.1007/S12225-018-9754-5</p>
<p>Vislobokov, N.A., Tanaka, N., Averyanov, L.V., Nguyen, H.T., Nuraliev, M.S. & Kuznetsov, A.N. (2014) <em>Tupistra khangii</em> (Asparagaceae), a new species from northern Vietnam. <em>Phytotaxa</em> 175 (5): 287–292. http://dx.doi.org/10.11646/phytotaxa.175.5.8</p>
<p>Wang, F.T. & Tang, T. (1978) <em>Flora Reipublicae Popularis Sinicae</em> 15. Science Press, Beijing, 280 pp.</p>