Larsenianthus W.J.Kress & Mood is a genus in the Zingiberaceae family found in E. Himalaya to Myanmar. It was first described in 2010 in Kress WJ, D Mood J, Sabu M, Prince LM, Dey S, Sanoj E., Larsenianthus, a new Asian genus of Gingers (Zingiberaceae) with four species. PhytoKeys. 2010;(1):15–32. doi:10.3897/phytokeys.1.658
Larsenianthus careyanus (Benth. & Hook.f.) W.J.Kress & Mood This species is accepted, and its native range is E. Himalaya to Myanmar. Source: Plants of the World Online. It has a rhizome, like most of the ginger family. Its common name is Praying Mantis Ginger. Photos from the Wikimedia commons by W. John Kress et. al. (source) and Yercaud Elango (source), respectively, both shared under a CC BY 4.0 licence.