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The genus Alpinia Roxb. is one of the largest genera of Zingiberaceae family, with about 250 species on the world and 35 species in Vietnam. Many species of Alpinia are used in traditional medicine of Vietnam such as Alpinia oblongifolia, Alpinia oxyphylla,... In this article, Alpinia graminifolia - a new record species for Vietnam flora was discovered in the mountain of Northern Vietnam (Quang Ninh province and Bac Giang province). Specimens were collected in Quang Ninh province (Uong Bi City, Thuong Yen Cong commune, Yen Tu mountain) and Bac Giang province (Son Dong dist., Thanh Luan commune), deposited at the Vietnam National Museum of Nature (VNMN), herbarium of Hanoi University of Pharmacy (HNIP), herbarium of Institute of Ecology and Biological Resources (HN).