Taxonomic study of Kaempferia subgen. Protanthium (Zingiberaceae) is difficult due to a high degree of intraspecific morphological variation in several species and the implied morphological overlap among the currently recognized species. Herein, we clarify the taxonomic circumscription of K. noctiflora, a rare species endemic to Chiang Mai Province (N Thailand), by describing K. noctiflora var. thepthepae Noppornch. & Somnoo, var. nova. It differs from K. noctiflora var. noctiflora especially by the labellum colouration and flowering time. The diagnostic characters of this novel variety are discussed and compared with those of morphologically similar taxa. Images of the plants, habit and dissected flowers, and information on the phenology, distribution and ecology are provided. Kaempferia noctiflora var. noctiflora and var. thepthepae are considered Vulnerable and Endangered, respectively.
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7 March 2024
Kaempferia noctiflora var. thepthepae (Zingiberaceae), a New Taxon from Thailand
Nattapon Nopporncharoenkul,
Thaya Jenjittikul,
Thunchanok Somnoo,
Jiraporn Meewasana,
Wattana Tanming
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Annales Botanici Fennici
Vol. 61 • No. 1
January 2024
Vol. 61 • No. 1
January 2024
