Abstract
Peliosanthes oksanae is described and illustrated as a new species from eastern Thailand. It is most similar to P. gracilipes known from northern and southwestern Thailand and northwestern Laos, from which it differs mainly by the shorter flowering stem, flowers borne singly or binately in the axils of the bracts and almost free oblong filaments not forming a typical corona. We briefly discuss taxonomic relationships between P. oksanae and two similar species, P. gracilipes and P. caesia. It is notable that especially P. oksanae and P. gracilipes are close in floral characters to Ophiopogon. We also report P. triandra, which was described from southern Cambodia, as new to Thailand. Both P. triandra and P. oksanae occurred in the same habitat.
References
Andrews, H.C. (1810) Peliosanthes teta. Botanists’ repository, for new, and rare plants 9: t. 605.
Averyanov, L.V. & Tanaka, N. (2012) New species of Peliosanthes and Tupistra (Aparagaceae) from eastern Indochina. Taiwania 57 (2): 153–167.
<a href="http://doi.org/10.6165/tai.2012.57(2).153">http://doi.org/10.6165/tai.2012.57(2).153</a>
Averyanov, L.V. & Tanaka, N. (2013) New species of Peliosanthes (Aparagaceae) from Vietnam. Turczaninowia 16 (2): 5–7.
<a href="http://turczaninowia.asu.ru/article/view/706/424">http://turczaninowia.asu.ru/article/view/706/424</a>
Averyanov, L.V., Tanaka, N. & Luu, H.T. (2013) New species of Ophiopogon and Peliosanthes (Asparagaceae) from Cambodia and Vietnam. Taiwania 58 (4): 233–241.
<a href="http://doi.org/10.6165/tai.2013.58.233">http://doi.org/10.6165/tai.2013.58.233</a>
Averyanov, L.V., Tanaka, N. & Nguyen, K.S. (2014) New species of Peliosanthes and Rohdea (Asparagaceae) from eastern Indochina. Taiwania 59 (1): 18–25.
<a href="http://doi.org/10.6165/tai.2014.59.18">http://doi.org/10.6165/tai.2014.59.18</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S., Nguyen, H.T. & Konstantinov, E.L. (2015a) New species of Ophiopogon Ker Gawl., Peliosanthes Andrews and Tupistra Ker Gawl. (Asparagaceae) in the flora of Laos and Vietnam. Adansonia Sér. 3, 37: 25–45.
<a href="https://doi.org/10.5252/a2015n1a4">https://doi.org/10.5252/a2015n1a4</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S. & Konstantinov, E.L. (2015b) A new species and two new records of Ophiopogon and Peliosanthes (Asparagaceae) in the flora of Laos. Taiwania 60 (2): 86–90.
<a href="http://doi.org/10.6165/tai.2015.60.86">http://doi.org/10.6165/tai.2015.60.86</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S. & Nguyen, T.H. (2016a) New species of Ophiopogon and Peliosanthes (Asparagaceae) from Laos and Vietnam. Taiwania 61 (3): 201–217.
<a href="http://doi.org/10.6165/tai.2016.61.201">http://doi.org/10.6165/tai.2016.61.201</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S., Truong, B.V., Nghiem, D.T. & Nguyen, T.H. (2016b) New species of Ophiopogon, Peliosanthes and Tupistra (Asparagaceae s.l.) in the flora of Vietnam. Nordic Journal of Botany 34 (1): 23–37.
<a href="https://doi.org/10.1111/njb.00854">https://doi.org/10.1111/njb.00854</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S., Nguyen, Q.N., Maisak, T.V. & Nguyen, T.H. (2017) New species of Peliosanthes, Rohdea and Tupistra (Asparagaceae) from Laos and Vietnam. Nordic Journal of Botany 35 (6): 697–710.
<a href="https://doi.org/10.1111/njb.01660">https://doi.org/10.1111/njb.01660</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S., Maisak, T.V. (2020) New or insufficiently known species of Ophiopogon, Peliosanthes and Rohdea (Asparagaceae) for the flora of Laos and Vietnam. Taiwania 65 (1): 61–73.
<a href="http://doi.org/10.6165/tai.2020.65.61">http://doi.org/10.6165/tai.2020.65.61</a>
Baker, J.G. (1879) A synopsis of Colchicaceae and the aberrant tribes of Liliaceae. Journal of the Linnean society, Botany 17 (103): 405–510.
<a href="https://www.biodiversitylibrary.org/item/8370">https://www.biodiversitylibrary.org/item/8370</a>
Chase, M.W., Reveal, J.L. & Fay, M.F. (2009) A subfamilial classi?cation for the expanded asparagalean families Amaryllidaceae, Asparagaceae and Xanthorrhoeaceae. Botanical Journal of the Linnean Society 161 (2): 132–136.
<a href="https://doi.org/10.1111/j.1095-8339.2009.00999.x">https://doi.org/10.1111/j.1095-8339.2009.00999.x</a>
Craib, W.C. (1912) Contributions to the flora of Siam II. List of Siamese plants, with descriptions of new species. Bulletin of Miscellaneous Information 10: 397–435.
Dahlgren, R.M.T., Clifford, H.T. & Yeo, P.F. (1985) The families of the Monocotyledons. Springer-Verlag, Berlin, 520 pp.
<a href="https://doi.org/10.1007/978-3-642-61663-1">https://doi.org/10.1007/978-3-642-61663-1</a>
Hance, H.F. (1885) Spicilegia florae sinensis: diagnoses of new, and habitats of rare or hitherto unrecorded, Chinese plants. Journal of botany, British and foreign 23: 321–330.
IUCN (2019) Guidelines for using the IUCN red list categories and criteria, version 14. Prepared by the Standards and Petitions Commitee. Available from: <a href="http://www.iucnredlist.org/documents/RedListGuidelines.pdf">http://www.iucnredlist.org/documents/RedListGuidelines.pdf</a>. (accessed 27 July 2020)
Jessop, J.P. (1976) A revision of Peliosanthes (Liliaceae). Blumea 23: 141–159.
Ker Gawler, J.B. (1807) Ophiopogon. Botanical Magazine 27: t. 1063.
Larsen, K. (1966) Two new Liliaceae from the Kao Yai national park. Botaniska Notiser 119 (2): 196–200.
Loureiro, J. de. (1790) Flora Cochinchinensis 1. Ulyssipone [Lisbon], typis, et expensis Academicis, 353 pp.
Nguyen, K.S., Averyanov, L.V., Tanaka, N., Konstantinov, E.L., Maisak, T.V. & Nguyen, H.T. (2017) New taxa of Peliosanthes and Tupistra (Asparagaceae) in the flora of Laos and Vietnam and supplemental data for T. patula. Phytotaxa 312 (2): 199–212.
<a href="https://doi.org/10.11646/phytotaxa.312.2.3">https://doi.org/10.11646/phytotaxa.312.2.3</a>
Nguyen, K.S., Averyanov, L.V., Tanaka,N., Quang, B.H., Hai, D.V., Binh, T.D. & Qao, Q. (2020) Peliosanthes crassicoronata (Asparagaceae), a new species from southern Vietnam. Phytotaxa 429 (1): 39–47.
<a href="https://doi.org/10.11646/phytotaxa.429.1.2">https://doi.org/10.11646/phytotaxa.429.1.2</a>
Ridley, H.N. (1920) On a collection of plants from Peninsular Siam. Journal of the Federated Malay States Museums 10 (2): 65–126.
Rodriguez, L. (1934) Hémodoracées nouvelles d’Indochine. Bulletin du Muséum National d’Histoire Naturelle, Paris. Sér. 2, 6: 95–97.
Shaw, J.M.H. (2009) A new Peliosanthes in cultivation. Plantsman 8 (4): 248–249.
Tamura, M.N., Poopath, M. & Sirimongkol, S. (2013) Peliosanthes brevicoronata (Asparagaceae), a new species from Thailand. Acta Phytotaxonomica et Geobotanica 64 (2): 107–111.
<a href="https://doi.org/10.18942/apg.KJ00008877423">https://doi.org/10.18942/apg.KJ00008877423</a>
Tanaka, N. (1999a) Taxonomic notes on Peliosanthes (Convallariaceae) I. Acta Phytotaxonomica et Geobotanica 50 (2): 147–155.
<a href="https://doi.org/10.18942/bunruichiri.KJ00001077420">https://doi.org/10.18942/bunruichiri.KJ00001077420</a>
Tanaka, N. (1999b) Taxonomic notes on Ophiopogon of South Asia II. Journal of Japanese Botany 74 (1): 25–33.
Tanaka, N. (2000) Taxonomic notes on Ophiopogon of South Asia VI. Journal of Japanese Botany 75 (3): 127–136.
Tanaka, N. (2001) Taxonomic notes on Ophiopogon of South Asia X. Journal of Japanese Botany 76: 11–19.
Tanaka, N. (2004a) A new species of Peliosanthes (Convallariaceae) from Vietnam and China. Kew Bulletin 59: 157–159.
<a href="https://doi.org/10.2307/4111093">https://doi.org/10.2307/4111093</a>
Tanaka, N. (2004b) Inclusion of Neolourya in Peliosanthes (Convallariaceae). Novon 14: 360–364.
Tanaka, N. (2018) Taxonomic revision of Peliosanthes bakeri and P. violacea (Asparagaceae), with descriptions of two new species from Bangladesh and India. Phytotaxa 356 (1): 34–48.
<a href="https://doi.org/10.11646/phytotaxa.356.1.3">https://doi.org/10.11646/phytotaxa.356.1.3</a>
Tanaka, N. (2019) Typification and identity of five taxa of Peliosanthes (Asparagaceae), with proposal of the new name P. pumila for P. violacea var. minor. Phytotaxa 401 (4): 296–300.
<a href="https://doi.org/10.11646/phytotaxa.401.4.7">https://doi.org/10.11646/phytotaxa.401.4.7</a>
Taram M., Borah, D. & Tanaka, N. (2020) Peliosanthes ligniradicis, a new species (Asparagaceae) from Arunachal Pradesh, NE India. Phytotaxa 438 (1): 43–48.
<a href="https://doi.org/10.11646/phytotaxa.438.1.5">https://doi.org/10.11646/phytotaxa.438.1.5</a>
Vislobokov, N.A. (2016) Peliosanthes separata (Aparagaceae), a new species from Laos with rare structure of androecium. Phytotaxa 275 (2): 186–188.
<a href="https://doi.org/10.11646/phytotaxa.275.2.11">https://doi.org/10.11646/phytotaxa.275.2.11</a>
Vislobokov, N.A., Tanaka, N., Kuznetsov, A.N., Kuzmicheva, E.A. & Romanov, M.S. (2018) Peliosanthes longicoronata (Asparagaceae), a new species from central Vietnam. Phytotaxa 360 (3): 296–299.
<a href="https://doi.org/10.11646/phytotaxa.360.3.11">https://doi.org/10.11646/phytotaxa.360.3.11</a>
Wallich, N. (1828–1849) Numerical List of Dried Specimens of Plants in the Museum of the Honl. East India Company, London, 306 pp.
<a href="https://doi.org/10.5962/bhl.title.1917">https://doi.org/10.5962/bhl.title.1917</a>
Averyanov, L.V. & Tanaka, N. (2012) New species of Peliosanthes and Tupistra (Aparagaceae) from eastern Indochina. Taiwania 57 (2): 153–167.
<a href="http://doi.org/10.6165/tai.2012.57(2).153">http://doi.org/10.6165/tai.2012.57(2).153</a>
Averyanov, L.V. & Tanaka, N. (2013) New species of Peliosanthes (Aparagaceae) from Vietnam. Turczaninowia 16 (2): 5–7.
<a href="http://turczaninowia.asu.ru/article/view/706/424">http://turczaninowia.asu.ru/article/view/706/424</a>
Averyanov, L.V., Tanaka, N. & Luu, H.T. (2013) New species of Ophiopogon and Peliosanthes (Asparagaceae) from Cambodia and Vietnam. Taiwania 58 (4): 233–241.
<a href="http://doi.org/10.6165/tai.2013.58.233">http://doi.org/10.6165/tai.2013.58.233</a>
Averyanov, L.V., Tanaka, N. & Nguyen, K.S. (2014) New species of Peliosanthes and Rohdea (Asparagaceae) from eastern Indochina. Taiwania 59 (1): 18–25.
<a href="http://doi.org/10.6165/tai.2014.59.18">http://doi.org/10.6165/tai.2014.59.18</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S., Nguyen, H.T. & Konstantinov, E.L. (2015a) New species of Ophiopogon Ker Gawl., Peliosanthes Andrews and Tupistra Ker Gawl. (Asparagaceae) in the flora of Laos and Vietnam. Adansonia Sér. 3, 37: 25–45.
<a href="https://doi.org/10.5252/a2015n1a4">https://doi.org/10.5252/a2015n1a4</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S. & Konstantinov, E.L. (2015b) A new species and two new records of Ophiopogon and Peliosanthes (Asparagaceae) in the flora of Laos. Taiwania 60 (2): 86–90.
<a href="http://doi.org/10.6165/tai.2015.60.86">http://doi.org/10.6165/tai.2015.60.86</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S. & Nguyen, T.H. (2016a) New species of Ophiopogon and Peliosanthes (Asparagaceae) from Laos and Vietnam. Taiwania 61 (3): 201–217.
<a href="http://doi.org/10.6165/tai.2016.61.201">http://doi.org/10.6165/tai.2016.61.201</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S., Truong, B.V., Nghiem, D.T. & Nguyen, T.H. (2016b) New species of Ophiopogon, Peliosanthes and Tupistra (Asparagaceae s.l.) in the flora of Vietnam. Nordic Journal of Botany 34 (1): 23–37.
<a href="https://doi.org/10.1111/njb.00854">https://doi.org/10.1111/njb.00854</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S., Nguyen, Q.N., Maisak, T.V. & Nguyen, T.H. (2017) New species of Peliosanthes, Rohdea and Tupistra (Asparagaceae) from Laos and Vietnam. Nordic Journal of Botany 35 (6): 697–710.
<a href="https://doi.org/10.1111/njb.01660">https://doi.org/10.1111/njb.01660</a>
Averyanov, L.V., Tanaka, N., Nguyen, K.S., Maisak, T.V. (2020) New or insufficiently known species of Ophiopogon, Peliosanthes and Rohdea (Asparagaceae) for the flora of Laos and Vietnam. Taiwania 65 (1): 61–73.
<a href="http://doi.org/10.6165/tai.2020.65.61">http://doi.org/10.6165/tai.2020.65.61</a>
Baker, J.G. (1879) A synopsis of Colchicaceae and the aberrant tribes of Liliaceae. Journal of the Linnean society, Botany 17 (103): 405–510.
<a href="https://www.biodiversitylibrary.org/item/8370">https://www.biodiversitylibrary.org/item/8370</a>
Chase, M.W., Reveal, J.L. & Fay, M.F. (2009) A subfamilial classi?cation for the expanded asparagalean families Amaryllidaceae, Asparagaceae and Xanthorrhoeaceae. Botanical Journal of the Linnean Society 161 (2): 132–136.
<a href="https://doi.org/10.1111/j.1095-8339.2009.00999.x">https://doi.org/10.1111/j.1095-8339.2009.00999.x</a>
Craib, W.C. (1912) Contributions to the flora of Siam II. List of Siamese plants, with descriptions of new species. Bulletin of Miscellaneous Information 10: 397–435.
Dahlgren, R.M.T., Clifford, H.T. & Yeo, P.F. (1985) The families of the Monocotyledons. Springer-Verlag, Berlin, 520 pp.
<a href="https://doi.org/10.1007/978-3-642-61663-1">https://doi.org/10.1007/978-3-642-61663-1</a>
Hance, H.F. (1885) Spicilegia florae sinensis: diagnoses of new, and habitats of rare or hitherto unrecorded, Chinese plants. Journal of botany, British and foreign 23: 321–330.
IUCN (2019) Guidelines for using the IUCN red list categories and criteria, version 14. Prepared by the Standards and Petitions Commitee. Available from: <a href="http://www.iucnredlist.org/documents/RedListGuidelines.pdf">http://www.iucnredlist.org/documents/RedListGuidelines.pdf</a>. (accessed 27 July 2020)
Jessop, J.P. (1976) A revision of Peliosanthes (Liliaceae). Blumea 23: 141–159.
Ker Gawler, J.B. (1807) Ophiopogon. Botanical Magazine 27: t. 1063.
Larsen, K. (1966) Two new Liliaceae from the Kao Yai national park. Botaniska Notiser 119 (2): 196–200.
Loureiro, J. de. (1790) Flora Cochinchinensis 1. Ulyssipone [Lisbon], typis, et expensis Academicis, 353 pp.
Nguyen, K.S., Averyanov, L.V., Tanaka, N., Konstantinov, E.L., Maisak, T.V. & Nguyen, H.T. (2017) New taxa of Peliosanthes and Tupistra (Asparagaceae) in the flora of Laos and Vietnam and supplemental data for T. patula. Phytotaxa 312 (2): 199–212.
<a href="https://doi.org/10.11646/phytotaxa.312.2.3">https://doi.org/10.11646/phytotaxa.312.2.3</a>
Nguyen, K.S., Averyanov, L.V., Tanaka,N., Quang, B.H., Hai, D.V., Binh, T.D. & Qao, Q. (2020) Peliosanthes crassicoronata (Asparagaceae), a new species from southern Vietnam. Phytotaxa 429 (1): 39–47.
<a href="https://doi.org/10.11646/phytotaxa.429.1.2">https://doi.org/10.11646/phytotaxa.429.1.2</a>
Ridley, H.N. (1920) On a collection of plants from Peninsular Siam. Journal of the Federated Malay States Museums 10 (2): 65–126.
Rodriguez, L. (1934) Hémodoracées nouvelles d’Indochine. Bulletin du Muséum National d’Histoire Naturelle, Paris. Sér. 2, 6: 95–97.
Shaw, J.M.H. (2009) A new Peliosanthes in cultivation. Plantsman 8 (4): 248–249.
Tamura, M.N., Poopath, M. & Sirimongkol, S. (2013) Peliosanthes brevicoronata (Asparagaceae), a new species from Thailand. Acta Phytotaxonomica et Geobotanica 64 (2): 107–111.
<a href="https://doi.org/10.18942/apg.KJ00008877423">https://doi.org/10.18942/apg.KJ00008877423</a>
Tanaka, N. (1999a) Taxonomic notes on Peliosanthes (Convallariaceae) I. Acta Phytotaxonomica et Geobotanica 50 (2): 147–155.
<a href="https://doi.org/10.18942/bunruichiri.KJ00001077420">https://doi.org/10.18942/bunruichiri.KJ00001077420</a>
Tanaka, N. (1999b) Taxonomic notes on Ophiopogon of South Asia II. Journal of Japanese Botany 74 (1): 25–33.
Tanaka, N. (2000) Taxonomic notes on Ophiopogon of South Asia VI. Journal of Japanese Botany 75 (3): 127–136.
Tanaka, N. (2001) Taxonomic notes on Ophiopogon of South Asia X. Journal of Japanese Botany 76: 11–19.
Tanaka, N. (2004a) A new species of Peliosanthes (Convallariaceae) from Vietnam and China. Kew Bulletin 59: 157–159.
<a href="https://doi.org/10.2307/4111093">https://doi.org/10.2307/4111093</a>
Tanaka, N. (2004b) Inclusion of Neolourya in Peliosanthes (Convallariaceae). Novon 14: 360–364.
Tanaka, N. (2018) Taxonomic revision of Peliosanthes bakeri and P. violacea (Asparagaceae), with descriptions of two new species from Bangladesh and India. Phytotaxa 356 (1): 34–48.
<a href="https://doi.org/10.11646/phytotaxa.356.1.3">https://doi.org/10.11646/phytotaxa.356.1.3</a>
Tanaka, N. (2019) Typification and identity of five taxa of Peliosanthes (Asparagaceae), with proposal of the new name P. pumila for P. violacea var. minor. Phytotaxa 401 (4): 296–300.
<a href="https://doi.org/10.11646/phytotaxa.401.4.7">https://doi.org/10.11646/phytotaxa.401.4.7</a>
Taram M., Borah, D. & Tanaka, N. (2020) Peliosanthes ligniradicis, a new species (Asparagaceae) from Arunachal Pradesh, NE India. Phytotaxa 438 (1): 43–48.
<a href="https://doi.org/10.11646/phytotaxa.438.1.5">https://doi.org/10.11646/phytotaxa.438.1.5</a>
Vislobokov, N.A. (2016) Peliosanthes separata (Aparagaceae), a new species from Laos with rare structure of androecium. Phytotaxa 275 (2): 186–188.
<a href="https://doi.org/10.11646/phytotaxa.275.2.11">https://doi.org/10.11646/phytotaxa.275.2.11</a>
Vislobokov, N.A., Tanaka, N., Kuznetsov, A.N., Kuzmicheva, E.A. & Romanov, M.S. (2018) Peliosanthes longicoronata (Asparagaceae), a new species from central Vietnam. Phytotaxa 360 (3): 296–299.
<a href="https://doi.org/10.11646/phytotaxa.360.3.11">https://doi.org/10.11646/phytotaxa.360.3.11</a>
Wallich, N. (1828–1849) Numerical List of Dried Specimens of Plants in the Museum of the Honl. East India Company, London, 306 pp.
<a href="https://doi.org/10.5962/bhl.title.1917">https://doi.org/10.5962/bhl.title.1917</a>