Skip to main navigation menu Skip to main content Skip to site footer

Bistorta emodi and Koenigia islandica (Polygonaceae): Two new additions to the Flora of Arunachal Pradesh, India.


Bistorta emodi (Meisn.) H. Hara and Koenigia islandica L. are herewith reported for the first time from Arunachal Pradesh, India. The detailed description along with information on the pollen morphology, flowering and fruiting, distribution, relevant notes and illustrations are provided for easy identification.


Arunachal Pradesh, New addition, Pollen morphology, Tawang.



Download data is not yet available.


  1. BHAUMIK, M., DASH, S.S. AND R.C. SRIVASTAVA 2020 Polygonaceae. In: Dash SS, Mao AA (Eds) Flowering plants of India An Annotated Checklist. Botanical Survey of India, 2: 397–409.
  2. BRANDBYGE, J 1993 Polygonaceae. In: Kubitzki K, Bittich V (Ed.) The families and genera of vascular plants. Springer, Berlin, 531–544.
  3. DASH, S.S. 1996. Distribution and diversity of Polygonaceae in Sikkim. J. Hill Res. 9(2): 380–394.
  4. DASH, S.S. 2004. Systematic studies in Polygonum sensu lato of Sikkim. J. Econ. Taxon. Bot. 28(1): 129–164.
  5. ERDTMAN, G. 1943. An Introduction to Pollen Analysis. The Chronica Botanica Company, Waltham, USA, 270.
  6. ERDTMAN, G. 1952. Pollen morphology and plant taxonomy of angiosperms. Almqvist & Wiksell, Stockholm, Sweden, 557.
  7. ESRI 2016. ArcGIS Desktop: Release 10.5. Redlands: Environmental Systems Research Institute.
  8. FAN, D.M., CHEN, J.H., MENG, Y., WEN, J., HUANG, J.L. AND Y.P. YANG 2013. Molecular phylogeny of Koenigia L.(Polygonaceae: Persicarieae): implications for classification, character evolution and biogeography. Mol. Phylogenet. Evol. 69: 1093–1100. 08.018.
  9. GALASSO, G., BANFI, E., MATTIA, F.D., GRASSI, F., SGORBATI, S. AND M. LABRA 2009. Molecular phylogeny of Polygonum L. s.l. (Polygonoideae, Polygonaceae), focusing on European taxa: preliminary results and systematic considerations based on rbcL plastidial sequence data. Atti Soc. ital. sci. nat., Mus. civ. stor. nat. Milano 150: 113–148.
  10. GRIERSON, A.J.C. AND D.G. LONG 1983 Polygonaceae. In: Flora of Bhutan Including a record of plants from Sikkim.Royle Botanic Garden, Edinburgh, 1(1): 153–175.
  11. HARA, H 1966 Polygonaceae. In: The Flora of Eastern Himalaya.First Report. University of Tokyo press, Japan, 67–75.
  12. HARALDSON, K. 1978. Anatomy and taxonomy in Polygonaceae subfamily Polygonoideae Meisn. emend.
  13. Jaretzky. Symb. Bot. Ups. 22: 1–95.
  14. HEDBERG, O. 1946. Pollen morphology in the genus Polygonum L. s. l. and its taxonomical significance. Sven.Bot. Tidskr. 40: 371–414.
  15. HEDBERG, O. 1997. The genus Koenigia L. emend. Hedberg (Polygonaceae). Bot. J. Linn. Soc. 124: 295–330. http://
  16. HONG, S.P., RONSE DECRAENE, L.P. AND E. SMETS 1998. Systematic significance of tepal surface morphology in tribes Persicarieae and Polygoneae (Polygonaceae).Bot. J. Linn. Soc. 127:91–116.
  17. HOOKER, J.D. 1890 Polygonaceae. In: Flora of British India.Spottiswood & Co., London, 5: 421–442.
  18. LAHIRI, S., DASH, S.S., SINHA, B.K., GHOSH, A. AND M. DAS 2019. Bistorta longispicata, Yonekura & H. Ohashi, (Polygonaceae): A new record to Indian Flora. Ind. J.Forestry 42(1): 9–13.
  19. LI, A.J. 1998 Polygonaceae. In: Li, AJ (Ed.) Flora Reipublicae Popularis Sinicae, Science Press, Beijing, 25 (1): 1–237.
  20. LI, A.J., BAO, B.J., GRABOVSKAYA-BORODINA, A.E., HONG, S.P., MCNEILL, J., MOSYAKIN, S.L., OHBA, H. AND C.W. PARK 2003 Polygonaceae. In: Li AJ (Ed.) Flora of China. Science Press, Beijing and Missouri Botanical Garden Press, St. Louis, 5: 277–350.
  21. LINNAEUS, C. 1753. Species Plantarum, Laurentius Salvius, Stockholm, 359–365.
  22. LOSINA-LOSINSKAJA, A.C. 1936 Koenigia L. In: Komarov VL (Ed.) Flora of the U.S.S.R., Academy of Sciences of the USSR, Moscow, 5: 704.
  23. MABBERLEY D.J. 2017. Mabberley’s plant-book: A portable dictionary of plants, their classifications and uses. Cambridge University Press, London, 215.
  24. MAREK, S. 1958. European genera of Polygonaceae in the light of anatomical and morphological investigations on their fruits and seeds. Monogr. Bot., 6: 57–81.
  25. MEISNER, C.F. 1826. Monographiae Generis Polygoni Prodromus. Sumtibus Auctoris, Typis A. Lador, Genevae, 55.
  26. MEISNER, C.F. 1832 Polygonaceae. In: Wallich N (Ed.) Pl.Asiat. Rar, : or, descriptions and figures of a select number of unpublished East Indian plants, Treuttel & Wurtz, London, ̈ 3: 51–65.
  27. MIYAMOTO, F., AKIYAMA, S., WU, S. K. AND H. OHBA 2002.New and noteworthy species of Bistorta (Polygonaceae) from the Sino-Himalayan region. Bull. Natn. Sci. Mus., Tokyo, Ser.B. 28(4): 141–148.
  28. POWO 2022. Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http:// on 18.02.2022).
  29. PUNT, W., HOEN, P.P., BLACKMORE, S., NILSSON S. AND A. LE., THOMAS, 2007. Glossary of pollen and spore terminology. Rev. Palaeobot. Palynol. 143: 1–81.
  30. ROBERTY, G. AND S. VAUTIER 1964. Les genres de Polygonacées. Boissiera 10: 7–128.
  31. RONSE DECRAENE L.P. AND J.R. AKEROYD 1988. Generic limits in Polygonum and related genera (Polygonaceae) on the basis of floral characters. Bot. J. Linn. Soc., 98: 321–371.
  33. RONSE DECRAENE, L.P. 1989. The flower of Koenigia islandica L. (Polygonaceae): an interpretation. Watsonia 17: 419–423.
  34. RONSE DECRAENE, L.P., HONG, S.P. AND E. SMETS 2000. Systematic significance of fruit morphology and anatomy in tribes Persicarieae and Polygoneae (Polygonaceae), Bot. J. Linn. Soc., 134: 301–337. http://dx.doi. org/10.1111/j.1095-8339. 2000.tb02356.x
  35. SINHA B.K, DASH S. S. AND P. SINGH 2019 Polygonaceae, In: Plants of Indian Himalayan Region (An Annotated Checklist & Pictorial Guide). Botanical Survey of India, 471–481.
  36. STEWARD, A.N. 1930. The Polygoneae of Eastern Asia. Contributions from the Gray Herbarium of Harvard
  37. University, 5: 1–129.
  38. TUTIN, T.G, BURGES, N.A., EDMONDSON, J.R., HEYWOOD, V.H., MOORE, D.M., VALENTINE, D.H., WAITERS, S.M. AND D.A. WEBB 1991 Polygonaceae Juss. In: Tutin TG (Ed.) Flora Europaea (2nd edition). Cambridge University Press, London, 1: 91–108.

Most read articles by the same author(s)

1 2 3 > >>