Abstract
Phyllagathis elegans (Melastomataceae, Sonerileae), a new species from Dongxing County in southern Guangxi, China, is described and illustrated. It closely resembles P. ovalifolia in habit, inflorescence type, floral merosity, stamen and capsule morphology, and crystal form, but differs from the latter in the hirsute stem with crooked hairs (vs. retrorse hairs), distally densely (vs. sparsely) leafy branches, and leaf blades 3-veined (vs. 5–7-veined), oblanceolate or elliptic-lanceolate (vs. ovate, oblong-ovate, or broadly elliptic).
References
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<p>Mentink, H. & Baas, P. (1992) Leaf anatomy of the Melastomataceae, Memecylaceae, and Crypteroniaceae. <em>Blumea</em> 37: 189–225.</p>
<p>Van Vliet, G.J.C.M. (1981) Wood anatomy of the palaeotropical Melastomataceae. <em>Blumea</em> 27: 395–462.</p>
<p>Wangwasit, K., Cellinese, N. & Norsaengsri, M. (2010) <em>Phyllagathis nanakorniana</em> (Melastomataceae), a new species from Thailand. <em>Blumea</em> 55: 246–248. https://doi.org/10.3767/000651910X543682</p>
<p>Zhou, Q.J., Lin, C.W., Dai, J.H., Zhou, R.C. & Liu, Y. (2019a) Exploring the generic delimitation of <em>Phyllagathis</em> and <em>Bredia</em> (Melastomataceae): A combined nuclear and chloroplast DNA analysis. <em>Journal of Systematics and Evolution</em> 57: 256–267. https://doi.org/10.1111/jse.12451</p>
<p>Zhou, Q.J., Lin, C.W., Ng, W.L., Dai, J.H., Denda, T., Zhou, R.C. & Liu, Y. (2019b) Analyses of plastome sequences improve phylogenetic resolution and provide new insight into the evolutionary history of Asian Sonerileae/Dissochaeteae. <em>Frontiers in Plant Science</em> 10: 1477. https://doi.org/10.3389/fpls.2019.01477</p>
<p>Blume, C. L. (1831) Über einige ostindische und besonders javanische Melastomataceen. <em>Flora</em> <em>oder Allgemeine botanische Zietung</em> 14: 465–528.</p>
<p>Cellinese, N. (2002) Revision of the genus <em>Phyllagathis</em> (Melastomataceae: Sonerileae) I. The species in Burma, Thailand, Peninsular Malaysia and Sumatra. <em>Blumea</em> 47: 463–492. </p>
<p>Cellinese, N. (2003) Revision of the genus <em>Phyllagathis</em> (Melastomataceae: Sonerileae) II. The species in Borneo and Natuna Island.<em> Blumea</em> 48: 69–97. https://doi.org/10.3767/000651903X686060</p>
<p>Cellinese, N. & Renner, S.S. (1997) New species and combinations of <em>Sonerila</em> and <em>Phyllagathis</em> (Melastomataceae) from Thailand. <em>Novon</em> 7: 106–112. https://doi.org/10.2307/3392181</p>
<p>Hansen, C. (1992) The genus <em>Phyllagathis</em> (Melastomataceae); Characteristics; delimitation; the species in Indo-China and China. Bulletin du Museum National d’Histoire Naturelle. Section B, Adansonia, Botanique. <em>Phytochimie</em> 14: 355–428.</p>
<p>IUCN Standards and Petitions Committee (2019) Guidelines for Using the IUCN Red List Categories and Criteria. Version 14. Prepared by the Standards and Petitions Committee. Available from: [http://www.iucnredlist.org/documents/RedListGuidelines.pdf ]</p>
<p>Li, H.L. (1944) Studies in the Melastomataceae of China. <em>Journal of the Arnold Arboretum</em> 25: 1–42.</p>
<p>Lin, C.W., Chen, C.F. & Yang, T.Y.A. (2017) Ten new species of <em>Phyllagathis </em>(Trib. Sonerileae, Melastomataceae) from Sarawak, Borneo. <em>Phytotaxa</em> 302: 201–228. https://doi.org/10.11646/phytotaxa.302.3.1</p>
<p>Mathew, J., Yohannan, R. & George, K.V. (2016) <em>Phyllagathis</em> Blume (Melastomataceae: Sonerileae), a new generic record for India with a new species. <em>Botany Letters</em> 163: 175–179. https://doi.org/10.1080/23818107.2016.1166453</p>
<p>Mentink, H. & Baas, P. (1992) Leaf anatomy of the Melastomataceae, Memecylaceae, and Crypteroniaceae. <em>Blumea</em> 37: 189–225.</p>
<p>Van Vliet, G.J.C.M. (1981) Wood anatomy of the palaeotropical Melastomataceae. <em>Blumea</em> 27: 395–462.</p>
<p>Wangwasit, K., Cellinese, N. & Norsaengsri, M. (2010) <em>Phyllagathis nanakorniana</em> (Melastomataceae), a new species from Thailand. <em>Blumea</em> 55: 246–248. https://doi.org/10.3767/000651910X543682</p>
<p>Zhou, Q.J., Lin, C.W., Dai, J.H., Zhou, R.C. & Liu, Y. (2019a) Exploring the generic delimitation of <em>Phyllagathis</em> and <em>Bredia</em> (Melastomataceae): A combined nuclear and chloroplast DNA analysis. <em>Journal of Systematics and Evolution</em> 57: 256–267. https://doi.org/10.1111/jse.12451</p>
<p>Zhou, Q.J., Lin, C.W., Ng, W.L., Dai, J.H., Denda, T., Zhou, R.C. & Liu, Y. (2019b) Analyses of plastome sequences improve phylogenetic resolution and provide new insight into the evolutionary history of Asian Sonerileae/Dissochaeteae. <em>Frontiers in Plant Science</em> 10: 1477. https://doi.org/10.3389/fpls.2019.01477</p>