Lepidagathis spinosa (Barlerieae: Acanthaceae), a steno-endemic species of Tamil Nadu, India: its taxonomy, lectotypification and distribution

G. Gnanasekaran; King  A.F.J; W. Arisdason

doi:10.22244/rheedea.2022.32.03.05

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Published: 03.04.2026

DOI: https://doi.org/10.22244/rheedea.2022.32.03.05

Keywords:

Conservation status, Endemism, Lepidagathis, Revision, Typification

G. Gnanasekaran

Department of Botany, Madras Christian College (Autonomous), Tambaram East, Chennai, Tamil Nadu – 600 059, India

King A.F.J

Department of Botany, Madras Christian College (Autonomous), Tambaram East, Chennai, Tamil Nadu – 600 059, India

W. Arisdason

Botanical Survey of India, Southern Regional Centre, TNAU Campus, Lawley Road, Coimbatore, Tamil Nadu – 641 003, India

Abstract

The taxonomy of Lepidagathis spinosa Wight ex Nees (Barlerieae: Acanthaceae), a little-known endemic species from Tamil Nadu is discussed with a detailed description, colour photographs, light and scanning electron micrographs and IUCN conservation status. Besides, the name L. spinosa is lectotypified here and a digital image of the lectotype specimen is provided. Furthermore, this study confirms that the earlier report of occurrence of this species from the states of Karnataka and Kerala is based on mistakenly identified specimens of L. incurva Buch.-Ham. ex D.Don.

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Vol. 32 No. 3 (2022): Rheedea

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

How to Cite

Gnanasekaran , G., A.F.J, K., & Arisdason, W. (2026). Lepidagathis spinosa (Barlerieae: Acanthaceae), a steno-endemic species of Tamil Nadu, India: its taxonomy, lectotypification and distribution. Rheedea, 32(3), 201-208. https://doi.org/10.22244/rheedea.2022.32.03.05

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