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Leaf architectural studies in Phyllanthus L. (Phyllanthaceae) from Arunachal part of Eastern Himalaya in India

Author Affiliations

  • 1Department of Botany, Rajiv Gandhi University, Doimukh, Itanagar, Arunachal Pradesh, India
  • 2Department of Botany, University of Calcutta, 35, Ballygunge circular Road, Kolkata, West Bengal, India
  • 3Department of Botany, University of Calcutta, 35, Ballygunge circular Road, Kolkata, West Bengal, India
  • 4Department of Botany, Rajiv Gandhi University, Doimukh, Itanagar, Arunachal Pradesh, India

Int. Res. J. Biological Sci., Volume 8, Issue (10), Pages 38-47, October,10 (2019)


Leaf architectural characters of seven species of Phyllanthus L. (Phyllanthaceae) were studied on the basis of foliar morphometric characters. The characters studied include leaf attachment, petiole features, laminar shape, apex and base shape including angles, margin type, blade class vein category etc. Estimation of vein islet number and minor venation details like the areole size, absolute vein islet and vein termination number were recorded and distinct description based on the leaf architectural traits for each species have been done. The quantitative data revealed some distinct variation among the species with some expressing close relatedness. A dichotomous key for the species have been constructed and relationships among the taxa have been represented through a dendrogram.


  1. Hoffman P. (2007)., Phyllanthaceae\" Flowering Plant Families of the World., In: Heywood, V.H. Brummitt, R.K., Culham,A. and Seberg, O. (Eds.) Firefly Books: Ontario, Canada, 250-252. ISBN: 1 84246 1655.
  2. Watson L. and Dallwitz M.J. (1992)., The families of flowering plants: descriptions, illustrations, identification, and information retrieval., version: 10th May 2019. delta-intkey.com.
  3. Kawakita A. and Kato M. (2017)., Diversity of Phyllanthaceae Plants., In Obligate Pollination mutualism. Springr, Tokyo, 81-115. ISBN: 978-4-431-56532-1.
  4. Samuel R., Kathriarachchi H.S., Hoffmann P., Barfuss M.H.J., Wurdack K.J., Davis C.C. and Chase M.W. (2005)., Molecular phylogenetics of Phyllanthaceae: evidence from plastid matK and nuclear PHYC sequences., Am.J.Bot., 92 (1), 132-141.
  5. Kathriarachchi H.S., Samuel R., Hoffmann P., Mlinarec J., Wurdack K.J., Ralimanana H., Stuessy T.F. and Chase M.W. (2006)., Phylogenetics of tribe Phyllantheae (Phyllanthaceae) based on nrITS and plastid matK DNA sequence data., Am.J.Bot., 93(4), 637-655.
  6. Stevens P.F. (2001)., Angiosperm phylogeny website., Version 12, July 2012 and more or less continuously updated since]. Available at: http://www.mobot.org/MOBOT/research/APweb/
  7. Govaerts R., Frodin D.G. and Radcliffe-Smith A. (2000)., World Checklist and Bibliography of Euphorbiaceae (and Pandaceae)., The Board of Trustees of the Royal Botanic Gardens, Kew.1-4, 1-1622.
  8. Mabberley D.J. (2008)., Mabberley, 3rd ed., Cambridge University Press. London. ISSN: 0950-4125
  9. Chakrabarty T., Gangopadhyay M. and Balakrishnan N.P. (2012)., Subfamily V. Phyllanthoideae Asch., In: Balakrishnan NP., Chakrabarty T., Sanjappa M., Lakshminarasimhan P., Singh P. (Eds.) Fl. Ind. Bot. Sur. Ind. Kol.23, 353-501. ISBN: 10: 8181770498.
  10. Dilcher D.L. (1974)., Approaches to the identification of Angiosperm leaf remains., Bot. Rev., 40(1), 1-157.
  11. Carlquist S.J. (1961)., Comparative plant anatomy: a guide to taxonomic and evolutionary application of anatomical data in angiosperms., Holt, Rinehart & Winston, New York.
  12. Annamani B. and Prabhakar M. (1991)., Foliar Architecture of Vishakhapatnam Flora.1.Ranales., Ind.J.Forester., 14, 131-137.
  13. Givnish T.J. (2010)., Ecology of plant speciation., Taxon., 59, 1326-1366.
  14. Ellis B., Daly D.C., Hickey L.J., Johnson K.R., Mitchell J.D., Wilf P. and Wing S.L. (2009)., Manual of Leaf architecture., Ithaca, NY: Comell University Press, 216. ISBN: 080147518X.
  15. Rejmanek M.B. and Brewer S.W. (2001)., Vegetative identification of tropical woody plants:state of the art and annotated bibliography., Biotropica., 33, 214-228.
  16. Green W.A. and Hickey L.J. (2005)., Leaf architectural profiles of angiosperm floras across the Cretaceous/Tertiary boundary., American Journal of Science, 305(10), 983-1013.
  17. Lande S.K. (2009)., Studies on Systematic Anatomy of certain Acanthaceae., Ph.D. Thesis, Department of Botany. Govt. Vidarbha Institute of Science and Humanities.
  18. LAWG. (1999)., Manual of Leaf Architecture – morphological description and categorization of dicotyledonous and net-veined monocotyledonous angiosperms., Leaf Architecture Working Group, Smithsonian Institution, Washington, DC. ISBN: 0-9677554-0-9.
  19. Mishra M.K., Dandamudi P., Nayani S.P., Munikoti S.S. and Chelukunda S.S. (2011)., Variability in stomatal features and leaf venation pattern in Indian coffee (Coffeaarabica L.) cultivars and their functional significance., Bot. Serb., 35(2), 111-119.
  20. Lama D. (2004)., Taxonomical, Distributional and Ecological studies of Acer L. in the Darjiling-Sikkim Himalayas., Ph.D. Thesis, University of North Bengal, Siliguri.
  21. Brady S., Anderson H. and Creech D. (1998)., Comparative leaf anatomy of Pernettya Gaud., (Ericaceae). Bot. Jahrb. Syst., 50, 481-495.
  22. Srinivasa B., Kumar A., Prabhakarn V., Lakshman K, Nandeesh R. and Subhramanyam P. (2008)., Pharmacognostical studies of Portulacaoleracea Linn., Braz.J.Pharmacogn., 18(4), 527-531.
  23. Gupta B. (1961)., Correlation of tissues in leaves.1.Absolute vein – islet numbers and absolute veinlet termination numbers., Ann.Bot., 25, 65-70.
  24. Niklas K.J. (1999)., A mechanical perspective on foliage leaf form and function., New.Phytol., 143, 19-31.
  25. Hickey L.J. and Wolf J.A. (1975)., The bases of Angiosperm phylogeny: vegetative morphology., Ann.Mo.Bot.Gard., 62, 538-589.
  26. Niinemets U.A. and Portsmuth T. (2006)., Leaf size modifies support biomass distribution between stems, petiole in temperate plants., New. Phytol., 171, 91-104.
  27. Pickup M., Westoby M. and Basden A. (2005)., Dry mass costs of deploying leaf area in relation to leaf size., Functional Ecology, 19(1), 88-97.
  28. Dengler N.G. and Kang J. (2001)., Vascular patterning and leaf shape., Curr.Opn.Pl Biol., 4, 50-56.
  29. Malinowski R. (2013)., Understanding of leaf development—the science of complexity., Plants., 2, 396-415.
  30. Hickey L.J. and Doyle J.A. (1972)., Fossil evidence on evolution of angiosperm leaf venation., Am.J Bot., 59, 661.
  31. Bailey I.W. and Sinott E. (1916)., The climatic distribution of certain types of angiosperms leaves., Am.J Bot., 3, 24-39.
  32. Ummu H.B., Talip N., Mohamad A.L., Affenddi A.E.A. and Juhari A.A.A. (2014)., Studies of leaf venation in selected taxa of the genus Ficus L. (Moraceae) in Peninsular Malaysia., Trop. Life Sci. Res., 25(2), 111-125.
  33. Rao N.V. and Inamdar J.A. (1983)., Leaf architectural studies in the Brassicaceae., Bot. Mag. Tokyo., 96, 15-28.
  34. Chaudhari G.S. and Inamdar J.A. (1984)., Leaf architecture of some Acanthaceae., Bot. Mag. Tokyo., 97, 469-481.
  35. Zhou Z.K., Wilkinson H. and Wu Z.Y. (1995)., Taxonomical and evolutionary implications of the leaf anatomy and architecture of Quercus L. subgenus Quercusfrom China., Cathaya., 7, 1-34.
  36. Luo Y. and Zhou Z.K. (2002)., Leaf architecture in Quercus subgenus Cyclobalanopsis (Fagaceae) from China., Bot. J. Linn. Soc., 140, 283-295.
  37. Sharma B., Albert S. and Dhaduk H. (2016)., Leaf venation studies of 30 varieties of Mangiferaindica L.(Anacardiaceae)., Webbia., 71(2), 253-263.
  38. Nelson T. and Dengler N. (1997)., Leaf vascular pattern formation., Plant Cell., 9, 1121-1135.
  39. Hickey L. (1977)., Stratigraphy and paleobotany of the Golden Valley Formation (Early Tertiary) of western North Dakota., Mem.Geol.Soc.Am., 150, 1-183.
  40. Roth-Nebelsick A., Uhl D., Mosbrugger V. and Kerp H. (2001)., Evolution and function of Leaf architecture:a review., Ann.Bot., 87, 553-566.
  41. Yapp R.H. (1912)., Spiraeaulmaria L. and its bearing on the problem of xeromorphy in marsh plants., Ann.Bot., 26(3), 815-870.
  42. Roth A., Mosbugger V., Belz G. and Neugebauer H.J. (1995)., Hydrodynamic modeling study of angiosperm leaf venation types., Botanica Acta., 108, 121-126.
  43. Mishra M.K., Padmajyothi D., Prakash N.S., Ram A.S., Srinivasan C.S. and Sreenivasan M.S. (2010)., Leaf architecture in Indian Coffee (Coffea Arabica L.) cultivars and their adaptive significance., World J. Fungal Pl.Biol., 1, 37-41.
  44. Klucking E.P. (1988)., Leaf venation pattern., In ‵Myrtaceae. Vol. III′. (Ed. J. Cramer) Stuttgart, Germany, 278.
  45. Fortunato R.H., Varelab B.G., Castroc M.A. and Nores M.J. (2017)., Leaf venation pattern to recognize austral South American medicinal species of “cow′s hoof” (Bauhinia L., Fabaceae)., Rev.Bras. Farmacogn., 27, 158-161.
  46. Verghese T.M. (1969)., A contribution to the failure venation of Scrophulariaceae., In: Choudhary KA, editor. Recent advances in the anatomy of tropical seed plants. India: Hindustan publishing corporation, Delhi: 253-266.
  47. Kumar D., Kumar A. and Prakash O. (2012)., Pharmacognostic evaluation of leaf and root bark of Holoptelea integrifolia Roxb., Asian Pac. J. Trop. Biomed., 2(3), 169-175.