Chromosome number variation and polyploidy in 19 Kaempferia (Zingiberaceae) taxa from Thailand and one species from Laos
Nattapon Nopporncharoenkul, Jatuporn Chanmai, Thaya Jenjittikul, Kesara Anamthawat-Jónsson, Puangpaka Soontornchainaksaeng
Journal of Systematics and Evolution . 2017, (5): 466 -476 .  DOI: 10.1111/jse.12264