Reinstatement of Memecylon elegantulum (Melastomataceae) and recircumscription of Memecylon rostratum, two species endemic to Sri Lanka

2025 · doi:10.3897/arphapreprints.e148020
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Abstract

Memecylon elegantulum Thwaites, a heterotypic synonym of M. rostratum Thwaites, is re-instated based on recent collections and field observations. The two species differ mainly in their habit, inflorescence structure, floral morphology and lamina morphology. A lectotype and an epitype are designated for Memecylon elegantulum , and a lectotype designated for M. rostratum . Both species are confined to the mixed dipterocarp rainforests of Sri Lanka’s perhumid south-western ‘wet zone’. Memecylon elegantulum appears to be restricted to a relatively small range in Ratnapura district, while M. rostratum has a wider distribution in wet zone.
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Preprint ARPHA Preprints https://doi.org/10.3897/arphapreprints.e148020 (28 Jan 2025) https://doi.org/10.3897/arphapreprints.e148020 (28 Jan 2025) Published in: PhytoKeys https://doi.org/10.3897/phytokeys.259.146534 Other versions: - Preprint InfoPreprint Info - CiteCite - MetricsMetrics - CommentComment - RelatedRelated - CitedCited ARPHA Preprints doi: 10.3897/arphapreprints.e148020 First posted 28 Jan 2025 Authors Amila Perera - Corresponding author Dilmah Ceylon Tea Company PLC, Colombo, Sri Lanka National Institute of Fundamental Studies, Kandy, Sri Lanka Postgraduate Institute of Science, University of Peradeniya, Peradeniya, Sri Lanka Agriculture Publication Unit, Department of Agriculture, Peradeniya, Sri Lanka Department of Botany, Faulty of Science, University of Peradeniya, Peradeniya, Sri Lanka Department of Plant Sciences, Faculty of Agriculture, Rajarata University, Anuradhapura, Sri Lanka Conflict of interest The authors have declared that no competing interests exist. Supporting agencies Department of National Botanic Gardens, Dilmah Ceylon Tea PLC, Franklinia Foundation, Rajarata University of Sri Lanka This is an open access preprint distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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