Notes on Discospermum sphaerocarpum Dalzell ex Hook.f., a rare species of Rubiaceae (Ixoroideae: Coffeeae) from southern India

Main Article Content

C. Pramod
https://orcid.org/0000-0001-7615-5752
V.V. Drisya
https://orcid.org/0009-0009-7074-4228
A.K. Pradeep
K.T. Chandramohanan
https://orcid.org/0009-0004-5155-3294

Abstract

Discospermum sphaerocarpum is a rare species in the tribe Coffeeae of the family Rubiaceae and its occurrence on the Madayippara lateritic plateau of the Kannur district of Kerala, southern India is discussed. This plant is endemic to southern India and Sri Lanka. In Kerala, this species was previously recorded from the low-altitude evergreen forests of Thiruvananthapuram district. The present study gives a detailed description, distribution and figures & images illustrating the diagnostic characters of D. sphaerocarpum for easy identification and conservation.

Article Details

Section
Communications
Author Biographies

C. Pramod, Department of Botany, University of Calicut, Calicut University P.O., Kerala 673635, India.

.

V.V. Drisya, Department of Botany, Government Brennen College, Dharmadam P.O., Thalassery, Kerala 670106, India.

.

A.K. Pradeep, Department of Botany, University of Calicut, Calicut University P.O., Kerala 673635, India

.

K.T. Chandramohanan, Department of Botany, Government Brennen College, Dharmadam P.O., Thalassery, Kerala 670106, India.

.

References

Ali, S.J. & E. Robbrecht (1991). Remarks on the tropical Asian and Australian taxa included in Diplospora or Tricalysia (Rubiaceae—Ixoroideae—Gardenieae). Blumea 35(2): 279–305.

Andreasen, K. & B. Bremer (2000). Combined phylogenetic analysis in the Rubiaceae-Ixoroideae: morphology, nuclear and chloroplast DNA data. American Journal of Botany 87(11): 1731–1748. https://doi.org/10.2307/2656750 DOI: https://doi.org/10.2307/2656750

Arriola, A.H., A.P. Davis, N.M. Davies, U. Meve, S. Liede-Schumann & G.J.D. Alejandro (2018). Using multiple plastid DNA regions to construct the first phylogenetic tree for Asian genera of Coffeeae (Ixoroideae, Rubiaceae). Botanical Journal of the Linnean Society 188(2): 132–143. https://doi.org/10.1093/botlinnean/boy059 DOI: https://doi.org/10.1093/botlinnean/boy059

Biag, R.D. & G.J.D. Alejandro (2021). Rubiaceae flora of northern Sierra Madre Natural Park, Isabela, Luzon, Philippines: Species richness, distribution, and conservation status. Philippine Journal of Science 150(3): 907–921. DOI: https://doi.org/10.56899/150.03.26

Dalzell, N.A. (1850). Discospermum genus novum. Hook. Journ. Bot. Kew Gard. Misc. 2: 257- 258.

Dassanayake, M.D. (1998). A Revised Handbook to the Flora of Ceylon. Oxford & IBH Publishing Co. Pvt. Ltd., New Delhi.

Davis, A.P., M. Chester, O. Maurin & M.F. Fay (2007). Searching for the relatives of Coffea (Rubiaceae, Ixoroideae): the circumscription and phylogeny of Coffeeae based on plastid sequence data and morphology. American Journal of Botany 94(3): 313–329. https://doi.org/10.3732/ajb.94.3.313 DOI: https://doi.org/10.3732/ajb.94.3.313

Fosberg, F.R. & M.H. Sachet (1965). Manual of Tropical Herbaria (Regnum Vegetabile 39). International Bureau for Plant Taxonomy and Nomenclature, Utrecht, Netherlands, 132 pp.

Gamble, J.S. & C.E.C. Fischer (1921). The Flora of the Presidency of Madras, Volume 2. Adlard & Son Ltd., London.

Hooker, J.D. (1880). Rubiaceae. Flora of British India 3: 17–210.

Nadkarni, K.M. (1976). Indian Materia Medica. Popular Prakashan Private ltd., Bombay, 454 pp.

Narayanasami, D. & B. Natesan (2020). Endemic vascular plants from the Coromandel Coast of Tamil Nadu, southern India, pp. 89–107 In: Kumar, S. (Ed.). Endangered Plants. IntechOpen, 180 pp. https://doi.org/10.5772/intechopen.94333 DOI: https://doi.org/10.5772/intechopen.94333

POWO (2023). Plants of the World Online. Facilitated by the Royal Botanical Gardens, Kew. Discospermum Dalzell. https://powo.science.kew.org/results?q=discospermum. Accessed on 30 June 2023.

Pramod, C. & A.K. Pradeep (2020). A Hillock of Biodiversity - Ecology and Flora of Madayippara, A South Indian lateritic Plateau. Indian Association for Angiosperm Taxonomy, Calicut.

Pramod, C. & A.K. Pradeep (2021). Observations on the flowering plant diversity of Madayippara, a southern Indian lateritic plateau from Kerala, India. Journal of Threatened Taxa 13(2): 17780–17806. https://doi.org/10.11609/jott.3883.13.2.17780-17806 DOI: https://doi.org/10.11609/jott.3883.13.2.17780-17806

QGIS (Quantum GIS Development Team) (2022). Quantum GIS geographic information system. Version 3.28.2. Downloaded on 4 January 2023.

Robbrecht, E. & C. Puff (1986). A survey of the Gardenieae and related tribes (Rubiaceae). Botanische Jahrbucher fur Systematik, Pflanzengeschichte und Pflanzengeographie 108: 63–137.

Sasidharan, N. (2004). Biodiversity documentation for Kerala. Part 6. Flowering Plants. Kerala Forest Research Institute, Peechi, Thrissur, 237 pp.

Singh, P., K. Karthigeyan, P. Lakshminarasimhan & S.S. Dash (2015). Endemic vascular plants of India. Botanical Survey of India, Kolkata, 239 pp.

Tosh, J., A.P. Davis, S. Dessein, P. De Block, S. Huysmans, M.F. Fay, E. Smets & E. Robbrecht (2009). Phylogeny of Tricalysia (Rubiaceae) and its relationships with allied genera based on plastid DNA data: Resurrection of the genus Empogona. Annals of the Missouri Botanical Garden 96(1): 194–213. https://doi.org/10.3417/2006202 DOI: https://doi.org/10.3417/2006202

Uddin, M.S., A. Mazumder & S.B. Uddin (2023). Addition of one hundred and forty-seven new vascular taxa to the flora of Bangladesh. Species 24: 1–8. https://doi.org/10.54905/disssi/v24i73/e13s1013 DOI: https://doi.org/10.54905/disssi/v24i73/e13s1013