Research Paper

Psychotria phuquocensis Bao, Vuong & V.S.Dang, a new species of Rubiaceae from Phu Quoc National Park, southern Vietnam

Van Toan Em Quach, Van Son Dang, Van Ngot Pham, Ba Vuong Truong, Ngoc Minh Trung Nguyen, Quoc Trong Pham, Quoc Bao Nguyen

Published on: 22 August 2024

Page: 366 - 371

DOI: 10.6165/tai.2024.69.366

  • BibTeX
    •
  • EndNote
    •
  • RIS
    •

    Abstract

    Psychotria phuquocensis, a new species is described and illustrated from Phu Quoc National Park, Phu Quoc Island in southern Vietnam. It can be distinguished from other Psychotria species previously known in the region by its glabrous stems, triangular, ovate-triangular to ovate stipules, elliptic, lanceolate elliptic or narrowly elliptic oblong leaf blade with small domatia between midrib and basal secondary veins, cymose inflorescence, green flower, and elliptisoid fruits. The color photographs, phenology, distribution, habitat, and preliminary conservation assessment are provided for P. phuquocensis.

    Keyword: Indochina, plant diversity, Psychotria aganosmifolia, Psychotria asiatica, Psychotria fluviatilis, Psychotrieae

    Literature Cited

    Andersson, L. 2002 Relationships and generic circumscriptions in the Psychotria complex (Rubiaceae, Psychotrieae). Systematics and Geography of Plants 72: 167–202.

    Beentje, H. 2012 The Kew Plant Glossary, an illustrated dictionary of plant terms (revised edition). Kew: Royal Botanic Gardens, Kew Publishing. 160 pp.

    Chen, T. and Taylor, C.M. 2011 Psychotria. In: Chen T., Taylor C.M., Swartz C. (eds.) Flora of China, vol 19. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, pp 294–301.

    Chen, W.C. 1992 Materials for Chinese Psychotria Linn. (Rubiaceae). Acta Phytotax. Sin. 30(5): 482–486.

    Craib, W.G. 1932. Contributions to the Flora of Siam.: additamentum XXXVII. Bull. Misc. Inform. Kew 10: 475–486.
    DOI: 10.2307/4113426View Article Google Scholar

    Davis, A.P., Govaerts F., Bridson D.M., Ruhsam, M., Moat, J. and Brummitt, N.A. 2009 A global assessment of distribution, diversity, endemism, and taxonomic e?ort in the Rubiaceae. Ann. Mo. Bot. Gard. 96(1): 68–78.
    DOI: 10.3417/2006205View Article Google Scholar

    Frodin, D.G. 2004 History and concepts of big plant genera. Taxon 53(3): 741–752.
    DOI: 10.2307/4135449View Article Google Scholar

    IUCN Standards and Petitions Committee 2019 Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Committee. Available from: https://www.iucnredlist.org/documents/RedListGuidelines.pdf (Accessed 22 December 2021).

    Linneaus, C. 1759 Systema natur? per regna tria natur?, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus II. Editio decima, reformata. Laurentius Salvius: Holmi?, pp. 929–930.

    Mark, N., Sounthone, K., Bouakhaykhone, S., Philip, T., Khamphone, S., Vichith, L. and Kate, A. 2007 A checklist of the Vascular Plants of Lao PDR. Royal Botanic Garden Edinburgh, Scotland, UK, 401 pp.

    Mary, A.C.B., Vernaluz, C.M., Jehson, C., Rene, A.A.B. 2024 Psychotria pendens (Rubiaceae, Psychotrieae), a new ultramafic species from Central Palawan, Philippines. Phytotaxa 649(3): 252–260.
    DOI: 10.11646/phytotaxa.649.3.2View Article Google Scholar

    Nepokroeff, M. Bremer, B., Sytsma, K.J. 1999 Reorganization of the Genus Psychotria and Tribe Psychotrieae (Rubiaceae) Inferred from ITS ans rcbL Sequence Data. Syst. Bot. 24(1): 5–27
    DOI: 10.2307/2419383View Article Google Scholar

    Nguyen, Q.B., Quach, V.T.E., Huynh H.D., Pham, Q.T., Truong, B.V., Yahara, T., Tagane, S., Dang, V.S. 2023. A new species of Psychotria (Rubiaceae) from Bidoup – Nui Ba National Park, Vietnam. Phytotaxa 618(2): 188–194.
    DOI: 10.11646/phytotaxa.618.2.8View Article Google Scholar

    Paul, J.R., Morton, C., Taylor, C.M., Tonsor, S.J. 2009 Evolution time for dispersal limits the extent but not the occupancy of species’ potential ranges in the tropical plant genus Psychotria (Rubiaceae). Am. Nat. 173(2): 188–199.
    DOI: 10.1086/595762View Article Google Scholar

    Petit, E. 1964 Les especes africaines du genre Psychotria L. (Rubiaceae) I. Bull. Jard. Bot. ?tat Bruxelles 34(2): 1–229.
    DOI: 10.2307/3667213View Article Google Scholar

    Petit, E. 1966 Les especes africaines du genre Psychotria L. (Rubiaceae) II. Bulletin du Jardin Botanique de Bruxelles 36(1): 65–189.
    DOI: 10.2307/3667246View Article Google Scholar

    Pham, H.H. 2000 C?y c? Vi?t Nam - An Illustrated Flora of Vietnam, vol. 3. Youth Publishing House, Ho Chi Minh City. 999 pp.

    Pitard, J. 1924 Rubiac?es. In: H. Lecomte (ed.), Flore g?n?rale de l’Indo-Chine 3. Masson et Cie, Paris. pp. 20–442.

    POWO, 2024. Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew.

    Sohmer, S.H. and Davis, A.P. 2007 The genus Psychotria (Rubiaceae) in the Philippine Archipelago. Sida 27: 1–247.

    Taylor, C.M., Dom?nguez-Lincona and Ochoterena, H. 2007 A new species of Psychotria subg. Psychotria (Rubiaceae, Psychotrieae) from west-central Mexico. Novon 17(1): 105–109.
    DOI: 10.3417/1055-3177(2007)17[105:ANSOPS]2.0.CO;2View Article Google Scholar

    Tran, N.N. 2005 Rubiaceae. In: Nguyen T.B. et al. (eds.), Checklist of plants species of Vietnam. Agriculture Publishing House, Hanoi, 532 pp.

    Turland, N.J., J.H. Wiersema, F.R. Barrie, W. Greuter, D.L. Hawksworth, P.S. Herendeen, S. Knapp, W.-H. Kusber, D.-Z. Li, K. Marhold, T.W. May, J. McNeill, A.M. Monro, J. Prado, M.J. Price and G.F. Smith (eds.). 2018 International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile 159. Glash?tten: Koeltz Botanical Books.

    Wong, K.M, Turner, I.M., Wang, R.J., Harwood, R., Seah, W.W., Ng, X.Y., Lim, R.C.J., Lua, H.K., Mahyuni, R. 2019 Rubiaceae. In: Middleton, D.J. et al. (eds), Flora of Singapore. Vol 13(1): 1–358.
    DOI: 10.26492/fos13.2019-01View Article Google Scholar