The preliminary results show that the diversity of vascular plants in Bai Tu Long Bay included 3 types of plant communities, with 789 species belonging to 393 genera, 129 families of 5 phylums (Psilophyta, Lycopodiophyta, Polypodiophyta, Pinophyta and Magnoliophyta). This report also showed records endangered and endemic species. Among them, 21 species were recorded in Vietnam Red Data Book (2007)
5 species were listed in the annexes IIA of The Government Decree 32/2006/ND-CP
1 species was indexed in Red List of Threatened plants, IUCN
24 species are endemic species of Vietnam.