A key to Vietnamese polygonaceae genera, with note on extended distribution of persicaria runcinata in Vietnam

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.
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A key to Vietnamese polygonaceae genera, with note on extended distribution of persicaria runcinata in Vietnam ACADEMIA JOURNAL OF BIOLOGY 2024, 46(1): 109–114 DOI: 10.15625/2615-9023/20181 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 distributionof Persicaria runcinata in Vietnam. Academia Journal of Biology, 46(1): 109–114. https://doi.org/10.15625/2615-9023/20181 Corresponding author email: phuonganh@vnmn.vast.vn 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) -1.110-1.200 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 C.Agardh in Aphor. Bot.: 182diverse in the temperate regions of the Northern (1823), orth. var. - Lagunea Lour. in Fl.Hemisphere, while in the tropics there are fewer Cochinch.: 220 (1790) - Mitesia Raf. in Fl.species (Takhtajan, 2012; Qaiser, 2001; Anjen Tellur. 3: 15 (1837) - Pogalis Raf. in Fl.et al., 1996; Govaerts, 2021; Rajbhandari, 2021). Tellur. 3: 15 (1837) - Sunania Raf. in Fl.A total of 11 genera currently assigned to Tellur. 3: 95 (1837) - Tasoba Raf. in Fl.Polygonaceae have been listed for the flora of Tellur. 3: 94 (1837) - Tovara Adans. in Fam. Pl. 2: 276 (1763) - Tracaulon Raf. in Fl.Vietnam to date, i.e., Polygonum L., Fagopyrum Tellur. 3: 13 (1837) - Truellum Houtt. in Nat.Mill., Fallopia Adans., Reynoutria Houtt., Hist. 2(8): 427 (1777).Rumex L., Antigonon Endl., Persicaria Mill,Antenoron Raf., Coccoloba P.Browne, Description: Partly based on QaiserMuehlenbeckia Meisn., and Rheum L.), with 54 (2001)species and 2 varietie (Ho, 2003; Do, 2007; Kim Erect-prostrate, ascending, annual (-& Donoghue, 2008). perennial) herb. Stem herbaceous, sometimes Our findings reveal an expanded woody. Leaves narrow, linear-lanceolate ordistribution of Persicaria runcinata (Buch.-Ham. elliptic-ovate, mostly without glands,Ex D.Don) H.Gross in Vietnams Lai Chau sometimes gland-dotted. Ochreae tubular,province, adjacent to its known presence in the ciliate-partite at the mouth, sometimes eciliate,neighbouring province of Lao Cai. Below, membranous. Inflorescence is a spike, racemeillustrations of our fresh collections and a key to or sometimes a head. Ochreolae tubular,the genera of Polygonaceae in Vietnam are membranous, ciliate or partite. Perianthprovided to facilitate the identification and segments 4–5, divided usually up to the middle,conservation of this important plant group. or above or below, glandular. Glands usually alternate with stamens. Stamens 4-8. Ovary MATE ...