Literature Cited

Christenhusz, M. J. M. and J. W. Byng. 2016. The number of known plants species in the world and its annual increase. Phytotaxa 261(3): 201–217.
DOI: 10.11646/phytotaxa.261.3.1View Article Google Scholar

Gagnepain, F. 1908. Zingib?rac?es. In: Lecomte, H. (Ed.) Flore g?n?rale de l’Indo-Chine, vol. 6:25–121.

Holttum, R. E. 1950. Zingiberaceae of the Malay Peninsula. Gard. Bull. Singapore 13:1–249.

Insisiengmay, O., M. F. Newman and T. Haevermans 2018. (2581) Proposal to conserve the name Kaempferia rotunda (Zingiberaceae) with a conserved type. Taxon 67(1): 207–208.
DOI: 10.12705/671.19View Article Google Scholar

Insisiengmay, O., T. Haevermans and M. F. Newman 2019.Typification of names in Kaempferia (Zingiberaceae) in the flora of Cambodia, Laos, and Vietnam. PhytoKeys 122: 97–102.
DOI: 10.3897/phytokeys.122.32160View Article Google Scholar

IUCN Standards and Petitions Committee. 2019. Guidelines for using the IUCN red list categories and criteria, ver. 14. The Standards and Petitions Committee. www.iucnredlist.org/documents/RedListGuidelines.pdf; Accessed 12 April 2020.

Kress, W. J., L. M. Prince and J. K. Williams 2002. The phylogeny and a new classification of the Gingers (Zingiberaceae): evidence from molecular data. Am. J. Bot. 89(10): 1682–1696.
DOI: 10.3732/ajb.89.10.1682View Article Google Scholar

Larsen, K. 1980. Annotated key to the genera of Zingiberaceae of Thailand. Nat. Hist. Bull. Siam Soc. 28: 151-169.

Larsen, K. and S.S. Larsen 2006. Gingers of Thailand. Queen Sirikit Botanic Garden, The Botanical Garden Organization Thailand: 6–61.

Leong-?korni?kov?, J. and M. Newman. 2015. Kaempferia. In: Gingers of Cambodia, Laos and Vietnam. Singapore Botanic Gardens, National Parks Board, Singapore.

Nopporncharoenkul, N. and T. Jenjittikul. 2017. Kaempferia noctiflora (Zingiberaceae), a new species from northern Thailand. Phytotaxa 316(1): 67–72.
DOI: 10.11646/phytotaxa.316.1.6View Article Google Scholar

Nopporncharoenkul, N. and T. Jenjittikul. 2018. Kaempferia graminifolia (subgen. Protanthium: Zingiberaceae), a new endemic species from Thailand. Phytotaxa 379(3): 261–266.
DOI: 10.11646/phytotaxa.379.3.4View Article Google Scholar

Nopporncharoenkul, N., W. Laongsri and T. Jenjittikul 2020. Two new species of Kaempferia subgenus Protanthium (Zingiberaceae) from northern Thailand. Nordic J. Bot. 38(2):
DOI: 10.1111/njb.02633View Article Google Scholar

Nopporncharoenkul, N., P. Soontornchainaksaeng, T. Jenjittikul, N. Chuenboonngarm and U. Viboonjun. 2016. Kaempferia simaoensis (Zingiberaceae), a new record for Thailand: evidence from nuclear ITS2 sequence analyses. Thai. J. Bot. 8(1): 81–91.

Picheansoonthon, C. 2010. Kaempferia lopburiensis (Zingiberaceae), a new species from Central Thailand. J. Jpn. Bot. 85: 148–152.

Picheansoonthon, C. 2011. Two new Kaempferia (Zingiberaceae) from Thailand. J. Jpn. Bot. 86: 1–8.

Picheansoonthon, C. and S. Koonterm 2009. A new species of Kaempferia L. (Zingiberaceae) from Northern Thailand. Taiwania 54(1): 52–56.
DOI: 10.6165/tai.2009.54(1).52View Article Google Scholar

Phokham, B., P. Wongsuwan and C. Picheansoonthon. 2013. Three new species of Kaempferia (Zingiberaceae) from Thailand and Laos. J. Jpn. Bot. 88: 297–308.

Rajkumar, K. 2012. Rediscovery of Kaempferia marginata (Zingiberaceae) after a lapse of 100 years from India. Rheedea 22(1): 28–31

Ridley, H. N. 1924. Flora of the Malay Peninsula 4: 1–458 London, L. Reeve & co., ltd., UK.

Saensouk, S. and T. Jenjittikul. 2001. Kaempferia grandifolia sp. nov. (Zingiberaceae), a new species from Thailand. Nord. J. Bot. 21(2):139–142.
DOI: 10.1111/j.1756-1051.2001.tb01349.xView Article Google Scholar

Saensouk, S. and P. Saensouk. 2019. Kaempferia mahasarakhamensis (Zingiberaceae), a new species from Thailand. Taiwania 64(1): 39–42.
DOI: 10.6165/tai.2019.64.39View Article Google Scholar

Saensouk, S. and P. Saensouk. 2019. Kaempferia phuphanensis (Zingiberaceae), a new species from Thailand. J. Jpn. Bot. 94(3): 149–152.

Sirirugsa, P. 1989. The genus Kaempferia (Zingiberaceae) in Thailand. Nord. J. Bot. 9(3): 257–260.
DOI: 10.1111/j.1756-1051.1989.tb00999.xView Article Google Scholar

Sirirugsa, P. 1992. Taxonomy of the genus Kaempferia (Zingiberaceae) in Thailand. Thai Forest Bulletin (Botany) 19: 1–15.

Techaprasan, J., S. Klinbunga, C. Ngamriabsakul and T. Jenjittikul 2010. Genetic variation of Kaempferia (Zingiberaceae) in Thailand based on chloroplast DNA (psbA-trnH and petA-psbJ) sequences. Genet. Mol. Res. 9(4): 1957–1973.
DOI: 10.4238/vol9-4gmr873View Article Google Scholar

Wongsuwan, P., S. Prasarn and C. Picheansoonthon 2015. Kaempferia koontermii (Zingiberaceae) – A new species from Thailand. J. Jpn. Bot. 90: 29–33.

Wongsuwan, P., P. Meechonkit, B. Phokham, S. Sangnark, P. Yupparach and C. Picheansoonthon 2020. A new species of Kaempferia (Zingiberaceae) from Northern Thailand. J. Jpn. Bot. 95: 34–38.