Systematic studies of Bornean Zingiberaceae v. Zingiberoideae of Lambir Hills, Sarawak

This paper reports the subfamily Zingiberoideae (Zingiberaceae) of Lambir Hills National Park, Sarawak, Malaysia. Twelve species representing Boesenbergia, Globba, and Zingiber are recorded. Systematic and ecological notes are provided, and the key to the Bornean species of Boesenbergia is updated. Four species, B. flabellata, B. ischnosiphon, B. lambirensis, and B. lysichitoides, and one variety, Z. longipedunculatum var. lambirense are described as new to science. The lectotype of B. grandifolia is designated. In addition, new combinations of Scaphochlamys and Haplochorema are reported.