The present work provides a taxonomic key to the genera of Polygonaceae found in Vietnam. It also reports the first occurrence of Persicaria runcinata in Lai Chau province, extending its known distribution within the country. Detailed photographic illustrations of the specimens studied accompany the findings. This extended distribution of P. runcinata could hold significant conservation implications, emphasizing the importance of further research and conservation efforts in the region. | ACADEMIA JOURNAL OF BIOLOGY 2024 46 1 109 114 DOI 2615-9023 20181 A KEY TO VIETNAMESE POLYGONACEAE GENERA WITH NOTE ON EXTENDED DISTRIBUTION OF Persicaria runcinata IN VIETNAM Tran Thi Phuong Anh Graduate University of Science and Technology Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Ha Noi Vietnam Received 23 February 2024 accepted 26 March 2024 ABSTRACT The present work provides a taxonomic key to the genera of Polygonaceae found in Vietnam. It also reports the first occurrence of Persicaria runcinata in Lai Chau province extending its known distribution within the country. Detailed photographic illustrations of the specimens studied accompany the findings. This extended distribution of P. runcinata could hold significant conservation implications emphasizing the importance of further research and conservation efforts in the region. Keywords Taxonomy Persicaria Polygonaceae extended distribution. Citation Tran Thi Phuong Anh 2024. A key to Vietnamese Polygonaceae genera with note on extended distribution of Persicaria runcinata in Vietnam. Academia Journal of Biology 46 1 109 114. https 2615- 9023 20181 Corresponding author email phuonganh@ 109 Tran Thi Phuong Anh INTRODUCTION Vég. 10 521 1841 - Chylocalyx Hassk. in The Polygonaceae family includes about Flora 25 2 Beibl. 1 20 1842 - species. They are distributed in Echinocaulon Meisn. Spach in Hist. Nat. 43 53 genera. The largest genera are Eriogonum Vég. 10 521 1841 - Echinocaulos Hassk. in 240 species Rumex 200 species Coccoloba Flora 25 2 Beibl. 1 20 1842 - Goniaticum 120 species Persicaria 100 species and Stokes in Bot. Mat. Med. 2 338 1812 - Calligonum 80 species . This family is Heptarina Raf. in Fl. Tellur. 3 15 1837 - widespread throughout the world but is most Lagunaea in Aphor. Bot. 182 diverse in the temperate regions of the Northern 1823 orth. var. - Lagunea Lour. in Fl. Hemisphere while in the tropics there are fewer .
