Cordia diffusa K.C. Jacob, the Kovai Manjack (Boraginaceae): a highly threatened steno-endemic species from Coimbatore City, Tamil Nadu, India

Main Article Content

S. Arumugam
K. Sampath Kumar
B. Karthik
V. Ravichandran

Abstract

Cordia diffusa K.C. Jacob, belonging to Boraginaceae, discovered in 1938 and named by K.C. Jacob in 1944, is a little-known and the only narrow endemic but neglected plant of Coimbatore City.  The lectotype of the steno-endemic is determined and the current status, distribution, potential threats, bioprospecting potential, and suggestions for conservation of the species are discussed.  The collection of steno-endemic plant during intensive exploration in its type locality nearly after 90 years is of phytogeographic and conservation significance.  The endemic is proposed the category of Critically Endangered (CR) based on criterion D of IUCN (as per versions 3.1 & 13).  C. diffusa can be protected by promoting awareness of the rarity of native species and mass propagation through vegetative means so as to introduce it in gardens, parks, and avenues, etc. at once in the city. 

Article Details

Section
Short Communications
Author Biographies

S. Arumugam, Botanical Survey of India, Southern Region Centre, TNAU Campus, Lawley Road P.O., Coimbatore, Tamil Nadu 641 003, India.

Botanical Assistant, Southern Regional Centre

B. Karthik, Botanical Survey of India, Southern Region Centre, TNAU Campus, Lawley Road P.O., Coimbatore, Tamil Nadu 641 003, India.

Research Scholar, Southern Regional Centre

V. Ravichandran, Botanical Survey of India, Southern Region Centre, TNAU Campus, Lawley Road P.O., Coimbatore, Tamil Nadu 641 003, India.

AGCB Post Doctoral Fellow, Southern Regional Centre

References

Ahmedullah, M. & M.P. Nayar (1987). Endemic Plants of the Indian Region. Peninuslar India. Vol. 1. Botanical Survey of India, Calcutta, 261pp.

Anonymous (2015). TN Envis District Profile for Ecosensitive Areas in Tamil Nadu, Western Region: Coimbatore, Tirupur, Karur & Erode. ENVIS Centre, Dept. of Environment, Govt. of Tamil Nadu, Chennai, 164pp.

Balachandran, N. & K. Rajendiran (2016). Cordia ramanujamii (Cordiaceae): a new species from Tamil Nadu, India. Taiwania 61(2): 74–77. https://doi.org/10.6165/tai.2016.61.74

Chandrabose, M. (1967/1968). A new species of Polygala from South India. Bulletin of the Botanical Survey of India 9(1–4): 288–290.

Chandrabose, M. (1981). Florisitic Studies in Coimbatore City and its environs. Bulletin of the Botanical Survey of India 23(1–2): 96–99.

Chandrabose, M. & N.C. Nair (1988). Flora of Coimbatore. Bishen Singh Mahendra Pal Singh, Dehra Dun, 398pp.

Chauhan, M.G. & S.S. Chavan (2009). Pharmacognosy and biological activity of Cordia rothii Roem. & Schult. bark. Indian Journal of Traditional Knowledge 8(4): 598–601.

Chitale, V.S., M.D. Behera & P.S. Roy (2014). Future of Endemic Flora of Biodiversity Hotspots in India. PLoS ONE 9(12): e115264. https://doi.org/10.1371/journal.pone.0115264

Daniel, P. & P. Umamaheshwari (2001). Flora of Gulf of Mannar Southern India. Botanical Survey of India, Calcutta, 688pp.

Ganjare, A.B., S.A. Nirmal & A.N. Patil (2011). Use of apigenin from Cordia dichotoma in the treatment of colitis. Fittoterpia 82(7): 1052–1056.

Henry, A.N., K. Vivekananthan & N.C. Nair (1978). Threatened flowering plants of south India. Journal of the Bombay Natural History Society 75: 684–697.

IUCN (2001). IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Commission. IUCN, Gland, Switzerland and Cambridge, pp. 35.

IUCN Standards and Petitions Subcommittee (2017). Guidelines for Using the IUCN Red List Categories and Criteria. Version 13. Prepared by the Standards and Petitions Subcommittee, 108pp. Downloadable from https://cmsdocs.s3.amazonaws.com/RedListGuidelines.pdf

Jacob, K.C. (1944). A new species of Cordia. Journal of the Bombay Natural History Society 45: 77–79.

Jamkhande, P.G., S.R. Barde, S.L. Patwekar & P.S. Tidke (2013). Plant profile, phytochemistry and pharmacology of Cordia dichotoma (Indian cherry): A review. Asian Pacific Journal of Tropical Biomedicine 3(12): 1009–1012.

Kruckeberg, A.R. & D. Rabinowitz (1985). Biological Aspects of Endemism in Higher Plants. Annual Review of Ecological Systematics 16: 447–479.

Kulkarni, B.G. & N.P. Singh (1973). On the distribution of Polygala jacobii Chandr. Current Science 42: 359.

Ledford, H. (2019). Global plant extinctions mapped. Nature 570: 148–149.

Mabberley, D.J. (2008). Mabberley’s Plant-Book. 3rd Edition. Cambridge University Press, New York, 1040pp.

Meher-Homji, V.M. (1995). Comments on ‘Endemic, rare and threatened flowering plants of South India’. Current Science 68: 1083–1084.

MOE (2012). The National Red List 2012 of Sri Lanka; Conservation Status of the Fauna and Flora. Ministry of Environment, Colombo, Sri Lanka, 477pp.

Nayar, M.P. (1996). Hotspots of Endemic Plants of India, Nepal, and Bhutan. Tropical Botanic Garden and Research Institute, Thiruvananthapuram, pp.254.

Oza, M.J. & Y.A. Kulkarni (2017). Traditional uses, phytochemistry and pharmacology of the medicinal species of the genus Cordia (Boraginaceae). Journal of Pharmacy and Pharmacology 69(7): 755–789.

Plant List (2019). Euphorbia indica. http://www.theplantlist.org/tpl1.1/record/kew-80276. Accessed on 19 May 2019.

POWO (Plants of the World Online) (2019). Euphorbia indica. http://www.plantsoftheworldonline.org/taxon/ urn:lsid:ipni.org:names:346892-1#synonyms. Accessed on 19 May 2019.

Prabu, K., A. Rajasekaran, D. Bharathi & S. Ramalakshmi (in press). Anti-oxidant activity, phytochemical screening and HPLC profile of rare endemic Cordia diffusa. Journal of King Saud University Science. Corrected proof 18 April 2018 unpublished; https://doi.org/10.1016/j.jksus.2018.04.025

Rabinowitz, D. (1981). Seven forms of rarity, pp. 205–217. In: Hugh S. (ed.). Biological Aspects of Rare Plant Conservation. John Wiley and Sons, New York, 558pp.

Ramamurthy, K. (1987). Boraginaceae, p. 97. In: Henry, A.N., G.R. Kumari & V. Chitra (eds.). Flora of Tamil Nadu, India. Vol. 2. Botanical Survey of India, Coimbatore, 258pp.

Rao, C.K., B.L. Geetha & G. Suresh (2003). Red List of Threatened Vascular Plant Species in India. Compiled from the 1997 IUCN Red List of Threatened Plants. ENVIS, Botanical Survey of India, Ministry of Environment & Forests, Govt. of India, Howarh, 169pp.

Raven, P.H. (1976). The destruction of the tropics. Frontiers 40: 22–23.

Sharp, A.J. (1964). The complete botanist. Science 146: 745–748.

Singh, P., K. Karthikeyan, P. Lakshminarasimhan & S.S. Dash (2015). Endemic Vascular Plants of India. Botanical Survey of India, Kolkata, 339pp.

Sivarajan, V.V (1991). Introduction to the Principles of Plant Taxonomy. Oxford & IBH Publishing Co. Pvt. Ltd. New Delhi, 292pp.

Soni, P. & S.H. Bodakhe (2014). Antivenom potential of ethanolic extract of Cordia macleodii bark against Naja venom. Asian Pacific Journal Tropical Biomedicine 4(1): 449–454.

https://indiabiodiversity.org/species/show/263922

https://sites.google.com/site/efloraofindia/species/m---z/po/polygalaceae/polygala/polygala-jacobii