Research Paper
Studies on Typhonium (Araceae — Areae) of Thailand VII: A new species and a new synonym
Khant Zaw Hein, Piyaporn Saensouk, Sarayut Rakarcha, Tri Warseno, Surapon Saensouk
Published on: 12 August 2026
Page: 643 - 648
DOI: 10.6165/tai.2026.71.643
Abstract
Typhonium gonos K.Z.Hein & Saensouk is described and illustrated as a species new to science, restricted to Permian limestone in Phrae Province, Northern Thailand, and compared with its probable closest congener, T. sinhabaedyae Hett. & A.Galloway from Tak Province. In addition, T. pusillum Sookch., V.D.Nguyen & Hett. is newly synonymized under T. gagnepainii J.Murata & Sookch.
Keyword: Aroideae, heterotypic synonym, Indochina, Northern Thailand, permian limestone, plant taxonomy
Literature Cited
Beentje, H. 2016 The Kew plant glossary: an illustrated dictionary of plant terms. 2nd ed. Royal Botanic Gardens, Kew, 184 pp.
Boyce, P.C., Croat, T.B., Hay, A. 2026 The ?berlist of Araceae, May 2026. Available at: https://www.researchgate.net/publication/405467676_Uberlist_May_2026 (Accessed: 4 June 2026).
Boyce, P.C., Sookchaloem, D., Hetterscheid, W.L.A., Gusman, G., Jacobsen, N., Idei, T., Nguyen, V.D. 2012 Araceae. Flora of Thailand 11: 101–321. The Forest Herbarium, Royal Forest Department, Thailand.
Boyce, P.C., Wong, S.Y. 2025 The aroids of Borneo: The botanical history, a conspectus of genera, and selected bibliography. Sandakania 27: 303–404.
Hay, A. 2019 Durianology, discovery, and saltation - The evolution of aroids. Gard. Bull. Singapore 71(Supple. 2): 257–313.
DOI: 10.26492/gbs71(suppl.2).2019-20View Article
Google Scholar
Hetterscheid, W.L.A., Sookchaloem, D., Murata, J. 2001 Typhonium (Araceae) of Thailand: New species and a revised key. Aroideana 24: 30–55.
Hetterscheid, W.L.A., Boyce, P.C. 2000 A reclassification of Sauromatum Schott and new species of Typhonium Schott (Araceae). Aroideana 23: 48–55.
Hetterscheid, W.L.A., Galloway, A. 2006 New Typhonium (Araceae) species from Thailand. Aroideana 29: 80–85.
IUCN Standards and Petitions Subcommittee 2024 The Guidelines for Using the IUCN Red List Categories and Criteria. Version 16 (March 2024). Available from: https://nc.iucnredlist.org/redlist/content/attachment_files/RedListGuidelines.pdf (Accessed: 4 June 2026).
Mayo, S.J., Bogner, J., Boyce, P.C. 1997 The genera of Araceae. Royal Botanic Gardens, Kew, 370 pp.
Saensouk, P., Saensouk, S., Hein, K.Z., Boonma, T., Rakarcha, S., Naive, M.A.K. 2025a Studies on Typhonium Schott (Araceae) of Thailand III: Typhonium cucullatum, a new species from Sakon Nakhon Province, Northeastern Thailand. Taiwania 70(3): 398–402.
DOI: 10.6165/tai.2025.70.398View Article
Google Scholar
Saensouk, P., Saensouk, S., Hein, K.Z., Boonma, T., Rakarcha, S., Chanthavongsa, K. 2025b Studies on Typhonium (Araceae — Areae) of Thailand V: Two new species from Eastern Thailand. Taiwania 70(4): 703–709.
DOI: 10.6165/tai.2025.70.703View Article
Google Scholar
Sookchaloem, D. 1995 Typhonium (Araceae) in Thailand. Thai For. Bull. (Bot.) 23: 18–39.
Sriboonma, D., Murata, J., Iwatsuki, K. 1994 A revision of Typhonium (Araceae). J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 15: 255–313.
Thiers, B. 2026 Index Herbariorum: A global directory of public herbaria and associated staff. New York Botanical Garden's Virtual Herbarium. Available at: http://sweetgum.nybg.org/science/ih/ (Accessed: 4 June 2026).
Turland, N.J., Wiersema, J.H., Barrie, F.R., Gandhi, K.N., Gravendyck, J., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Klopper, R.R., Knapp, S., Kusber, W.-H., Li, D.-Z., May, T.W., Monro, A.M., Prado, J., Price, M.J., Smith, G.F., Zamora Se?oret, J.C. 2025 International Code of Nomenclature for algae, fungi, and plants (Madrid Code). Regnum Vegetabile 162. Chicago: University of Chicago Press.
Wong, S.Y., Boyce, P.C. 2011 Geological Perambulations. Newsletter International Aroid Society 33(4): 1–6.
Wong, S.Y., Boyce, P.C., Hay, A. 2026 Schismatoglottideae (Araceae) of Borneo LXXX: Bau djinna, a new species from the Rejang Basin, Sarawak. Fed. Repert. 137: e70063.
DOI: 10.1002/fedr.70063View Article
Google Scholar

