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The paper provides updated and thoroughly databases on vascular flora and vegetation types at elevational belt above 2,800m of Hoang Lien Son mountain range (Lao Cai province) for plant diversity conservation and sustainable development planning. The research results show that in this belt, there are 126 species, 82 genera, 46 families belonging to 3 vascular divisions: Polypodiophyta, Pinophyta and Magnoliophyta. In particular, Magnoliophyta has absolute dominance with 123 species (accounts for 97.6% of the total species of study area). 6 valuable and rare species (5% of total species) in Vietnam Red Book, Red List of IUCN, 13 endemic species (10.3% of total species) and 37 useful species (29.4% of total species) are recorded. Among them, there are 7 endemic species only in Hoang Lien Son area, 31 medicinal species, 9 ornamental species and 5 food species. 5 vegetation formations at elevation belt of 2,800 m are described. They are typical and unique to Hoang Lien Son high mountain area that should be prioritized to protect from human impacts, especially overload tourism development.
 L. M. Kem, M. Dilger, Program of Researching Forests in Vietnam, Hoang Lien Conservation, Hanoi, 1994.
 N. N. Thin, D. K. Harder, Diversity of the Flora of Fan Si Pan, the Highest Mountain in Vietnam, Annals of the Missouri Botanical Garden, Vol. 83, No. 3, 1996, pp. 404-408.
 T. D. Ly et al., Flora and Vegetation in Hoang Lien Moutain, Journal of Forestry, Vol. 4-5, 1996, pp. 7-9.
 T. D. Ly, D. H. Thu, L. D. Tan, Vegetation Succession after Forest Fire in Fansipan, Journal of Forestry, Vol. 2, 1997, pp. 8-9.
 H. V. Tue, Flora and Vegetation Structure of Hoang Lien Moutain - some Initial Results of the Research, Proceeding of Seminar and Workshop Biodiversity Value of Hoang Lien Moutains and Strategies for Conservation, ISBN 1873070136, Lao Cai, 1997, pp. 9-11.
 A. N. Kouznetsov, P. Luong, Flora of Fansipan Moutain, Proceeding of Seminar and Workshop Biodiversity Value of Hoang Lien Moutains and Strategies for Conservation, ISBN 1873070136, Lao Cai, 1997, pp. 11-18.
 N. N. Thin, N. T. Thoi, Diversity of Vascular Plants in the High Mountains of Sapa - Fansipan, Vietnam National University Press, Hanoi, 1998.
 V. A. Tai, N. N. Thin, N. Q. Tri, Vegetation of Height Belt above 1600 m in Hoang Lien National Park, Lao Cai Province, Journal of Agriculture and Rural Development, Vol. 3, No. 4, 2007, pp. 108-111.
 N. Q. Tri, V. A. Tai, N. N. Thin, The Result of Flora Diversity in Hoang Lien National Park, Journal of Agriculture and Rural Development, Vol. 2, 2008, pp. 91-94.
 T. N. Kiem el al., Assessement of Plant Resources in Hoang Lien National Park Lao Cai Province for Biodiversity Conservation and Sustainable Development, VNU Journal of Science, Vol. 27, No. 2S, 2011, pp. 36-41.
 A. Leonid, P. K. Loc, D. T. Doan, Flora and Vegetation Survey of Van Ban District, Lao Cai Province of Northern Vietnam, Fauna and Flora International, Hanoi, 2002.
 N. K. Khoi et al., Species Diversity of Vascular Plant in Hoang Lien - Van Ban Nature Reserve, Lao Cai Province, Proceeding of the 4th National Scientific Conference on Ecology and Biological Resources, ISSN 1859-4425, 2011, pp. 668-673.
 T. N. Kiem, N. N. Thin, Study on the Diversity of Vegetations in Hoang Lien - Van Ban Nature Reserve (Lao Cai Province) for Biodiversity Conservation Purpose, VNU Journal of Science, Vol. 28, Nol 2S, 2012, pp. 13-19.
 T. N. Kiem, N. N. Thin, B. V. Thanh, The Diversity of Vegetations in Y Ty - Den Sang - Sang Ma Sao Area (Bat Xat District, Lao Cai Province), Journal of Science and Technology, Vol. 50, No. 3E, 2012, pp. 1301-1307.
 T. N. Kiem et al., A Survey on Plant Resource Biodiversity of Batxat Nature Reserve, Journal of Biology, Vol. 40, No. 2, 2018, pp. 66-69.
 B. H. Quang el al., Towards a Floristic Inventory of Bat Xat Nature Reserve, Vietnam: Thirteen New National Records of Vascular Plants, Wulfenia, Vol. 27, 2020, pp. 233-250.
 N. N. Thin, Plant Research Methods, Vietnam National University Press, Hanoi, 2007.
 P. H. Ho, An Illustrated Flora of Vietnam, Tre Publishing House, Ho Chi Minh City, 1999 - 2001.
 Vietnam Academy of Science and Technology, Flora of Vietnam (11 volume), Science and Technics Publishing House, Hanoi, 1996 - 2011.
 The Forest Inventory and Planning Institute, Vietnam Forest Trees, Agricultural Publishing House, Hanoi, 1996.
 L. H. Humbert, et al., Flore Générale de L'Indo-chine., I - VII, Masson et Cie, Editeurs, Paris, 1907-1952.
 A. Aubréville et al., Flore du Cambodge, Du Laos et Du Vietnam, 1 - 28 Fascicules, Museum National d' Histoire Naturelle, Paris, 1960 - 1996.
 B. K. Brummitt, Vascular Plant Families and Genera, Royal Botanic Gardens, Kew, 1992.
 Vietnam National University, Hanoi and Vietnam Academy of Science and Technology, Checklist of Plant Species of Vietnam (3 volume), Agriculture Publishing House, Hanoi, 2001 - 2005.
 Do Tat Loi, Vietnamese Medicinal Plants and Remedy, Medical Publishing House, Hanoi, 2005.
 V. V. Chi, Dictionary of Vietnamese Medicinal Plants (2 Volume), Medical Publishing House, Hanoi, 2012.
 D. H. Bich et al., Medicinal Plants and Animals
(3 Volume), Science and Technics Publishing House, Hanoi, 2006-2011.
 T. D. Ly, 1900 Species of Useful Plants in Vietnam, The Gioi Publisher, Hanoi, 1993.
 D. V. My, Medicinal Plants of the Hoang Lien Mountain Range, Proceeding of Seminar and Workshop Biodiversity Value of Hoang Lien Moutains and Strategies for Conservation, ISBN 1873070136, Lao Cai, 1997, pp. 36-39.
 National Institute of Medicinal Materials, Checklist of Vietnamese Medicinal Plants, Science and Technics Publishing House, Hanoi, 2016.
 Royal Botanic Gardens, Kew and Missouri Botanical Garden, The Plant List, http://www.theplantlist.org/, 2020 (accessed on: April 12th, 2020).
 Ministry of Science and Technology and Vietnam Academy of Science and Technology, Vietnam Red Data Book (Part II: Plant), Publishing House for Science and Technology, Hanoi, 2007.
 The IUCN Red List of Threatened Species, https://www.iucnredlist.org/, IUCN, 2020 (accessed on: April 12th, 2020).
 Vietnamese Government, Decree No. 06/2019/ND-CP Dated 22/01/2019 on the Management of Endangered, Precious and Rare Forest Plants and Animals and the Implementation of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES).
 N. Tap, The Red List of Medicinal Plants in Vietnam 2019, Journal of Medicinal Materials, ISSN 1859-4735, Vol. 24, No. 6, 2019, pp. 319-328.
 P. K. Loc, Essay to use UNESCO Classification for Setting UPA Framework of Classification of Vegetation of Vietnam, Journal of Biology, Vol. 7, No. 4, 1985, pp. 1-5.