Abstract
The genus Geocharis is one of the genera in the ginger family. This genus is distributed in Sumatra, the Malay Peninsula, Sabah, Sarawak, and the Philippines, where Sumatra is its main distribution. In this study, Internal Transcribed Spacer (ITS) sequence data were used to determine phylogenetic relationships among six species of Geocharis from Sumatra. A total of fourteen sequence data were analyzed in this study. Seven samples were analyzed at the Laboratory of Genetics and Molecular, Biology Department, Faculty of Mathematics and Natural Sciences, Andalas University, and seven others using sequence from GenBank. Voucher specimens are deposited at the Herbarium of Andalas (ANDA). The results showed that the Geocharis species were grouped into two main clusters, in which all species collected from Sumatra are in the same clade.
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