A taxonomic revision of the genus Justicia (Acanthaceae) in Peninsular India

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Published: 03.04.2026
DOI: https://doi.org/10.22244/rheedea.2023.33.04.03
Keywords:
Conservation Assessment,, Justicieae, Lectotypification, Synonymization

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P. Soumya
Central National Herbarium, Botanical Survey of India, Botanic Garden P.O., Howrah, West Bengal – 711 103, India and Department of Botany, University of Calicut, Malappuram District, Kerala – 673 635, India
Y.F. Deng
State Key Laboratory of Plant Diversity and Specialty Crops, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou – 510 650, People’s Republic of China
S.S. Dash
Botanical Survey of India, CGO Complex, Sector 1, Salt Lake, Kolkata, West Bengal – 700 064, India
P. Sunojkumar
Department of Botany, University of Calicut, Malappuram District, Kerala – 673 635, India

Abstract

 A detailed taxonomic account of the genus Justicia L. in Peninsular India is provided, with 18 species recognized. Lectotypifications of six names are carried out. Nine taxa are treated as synonyms: Justicia diffusa var. orbiculata C.B.Clarke of J. diffusa Willd.; J. nilgherrensis (Nees) Wall. ex C.B.Clarke and J. tamilnadensis P.Raja & Soosairaj of J. trinervia Vahl; J. nagpurensis V.A.W.Graham, J. notha C.B.Clarke and J. pathanamthittiensis Remadevi & Binojk. of J. procumbens L.; J. quinqueangularis var. kawalii Annamma & Venu of J. quinqueangularis J.Koenig ex Roxb.; J. salsoloides T.Anderson of J. tranquebariensis L.f. and J. vahlii var. rupicola (J.L.Ellis) Pull., Moulali & Sandhyar. of J. vahliana Schult. Detailed descriptions, photographic images and a key for identifying species in Peninsular India are provided along with data on phenology, distribution and conservation status.

Article Details

Issue

Vol. 33 No. 4 (2023): Rheedea Acanthaceae Special Issue

Section

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

How to Cite

Soumya , P., Deng , Y., Dash , S., & Sunojkumar, P. (2026). A taxonomic revision of the genus Justicia (Acanthaceae) in Peninsular India. Rheedea, 33(4), 270-331. https://doi.org/10.22244/rheedea.2023.33.04.03

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