Abstract

Kaempferia sisaketensis (Zingiberaceae), a new species from Northeastern Thailand, is described and illustrated. This new taxon can be easily recognized by its 2-4 elliptic and glabrous leaves, pink to violet flowers with the deeplybilobed labella, and the absence of the staminodes. Relationship with its closely related taxa, K. spoliata Sirirugsa and K. chayanii Koonterm, is also discussed.

中文摘要

本文就分布於泰國東北邊的山奈屬 (薑科) 新種－Kaempferia sisaketensis Picheans. & Koonterm 提供描述及圖片。此一新種可以藉由二至四片橢圓形、無毛的葉片，粉紅至紫色的花，深裂的唇瓣，及假雄蕊缺如等特徵，易於與其他相近分類群鑑別，相近種K. spoliata Sirirugsa 及 K. chayanii Koonterm 亦在本文中一併予以討論。

Keyword: new species, Kaempferia sisaketensis, Zingiberaceae, Northeastern Thailand. 新種、Kaempferia sisaketensis、薑科、泰國東北 (伊善地區)。