Abstract
Phyllagathis chongzuoensis, a new species from Guangxi Province, China, is described here. It is similar to P. erecta in having stiffly papery leaf blades with abaxially furfuraceous indumentum, similar leaf vernation, umbellate paniculate inflorescences and cup-shaped capsules, but differs in stoloniferous stem with indistinct internodes, shorter petioles, and obovate to suborbicular leaf blades with irregularly denticulate margin. Phylogenetic analyses based on nrITS and plastid genome confirmed that it is close to P. erecta.
References
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<p>de Candolle, A.P. (1825) Ordo LXIII. Leguminosae. <em>Prodromus Systematis Naturalis Regni Vegetabilis</em> 2: 93–524.</p>
<p>Capella-Gutiérrez, S., Silla-Martínez, J.M. & Gabaldón, T. (2009) trimAl: a tool for automated alignment trimming in large-scale phylogenetic analyses. <em>Bioinformatics</em> 25: 1972–1973. https://doi.org/10.1093/bioinformatics/btp348</p>
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<p>Cellinese, N. (2002) Revision of the genus <em>Phyllagathis</em> Blume (Melastomataceae: Sonerileae). I. The species of 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. Blumea 48: 69–97. https://doi.org/10.3767/000651903x686060</p>
<p>Chen, C. (1984a) Melastomataceae. <em>In:</em> Chen, C. (Ed.) <em>Flora Reipublicae Popularis Sinicae vol. 53.</em> Science Press, Beijing, pp. 135–293.</p>
<p>Chen, C. (1984b) Materia ad flora Melastomataceae sinensium. <em>Bulletin of Botanical Research</em> 4: 33–68.</p>
<p>Chen, C. & Renner, S.S. (2007) Melastomataceae. <em>In:</em> Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.) <em>Flora of China vol. 13</em>. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, pp. 377–384.</p>
<p>Chen, H.L., Nong, S.Y., Liu, Y. & Liu, Y. (2021) A new species of <em>Phyllagathis</em> (Sonerileae, Melastomataceae) from Guangxi, China. <em>Phytotaxa</em> 509: 225–232. https://doi.org/10.11646/phytotaxa.509.2.5</p>
<p>Diels, F.L.E. (1932) Beiträge zur kenntnis der Melastomataceen ostasiens. B<em>otanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie</em> 65: 97–119.</p>
<p>Edgar, R.C. (2004) MUSCLE: multiple sequence alignment with high accuracy and high throughput. <em>Nucleic Acids Research </em>32: 1792–1797. https://doi.org/10.1093/nar/gkh340</p>
<p>Hansen, C. (1990) <em>Tylanthera</em> (Melastomataceae), a new genus of two species endemic to Thailand. <em>Nordic Journal of Botany</em> 9: 631–635. <br>https://doi.org/10.1111/j.1756-1051.1990.tb00552.x</p>
<p>Hansen, C. (1992) The genus <em>Phyllagathis</em> (Melastomataceae): characteristics; delimitation; the species in Indo-China and China. <em>Bulletin du Muséum National d’Histoire Naturelle, B, Adansonia</em> 14: 355–428.</p>
<p>Hoang, D.T., Chernomor, O., von Haeseler, A., Minh, B.Q. & Vinh, L.S. (2018) UFBoot2: improving the ultrafast bootstrap approximation. <em>Molecular Biology and Evolution</em> 35: 518–522. https://doi.org/10.1093/molbev/msx281</p>
<p>Hu, S.Y. (1952) Notes on the Flora of China, II. Journal of the Arnold Arboretum 33: 166–178.</p>
<p>Jack, W. (1823) On the Malayan Species of Melastoma. <em>Transactions of the Linnean Society of London</em> 14: 1–22. https://doi.org/10.1111/j.1095-8339.1823.tb00077.x</p>
<p>Jin, J.J., Yu, W.B., Yang, J.B., Song, Y., dePamphilis, C.W., Yi, T.S. & Li, D.Z. (2020) GetOrganelle: a fast and versatile toolkit for accurate de novo assembly of organelle genomes. <em>Genome Biology </em>21: 241. https://doi.org/10.1186/s13059-020-02154-5</p>
<p>Katoh, K. & Standley, D.M. (2013) MAFFT Multiple Sequence Alignment Software Version 7: improvements in performance and usability. <em>Molecular Biology and Evolution</em> 30: 772–780. https://doi.org/10.1093/molbev/mst010</p>
<p>Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003) A checklist of the trees, shrubs, herbs, and climbers of Myanmar. <em>Contributions from the United States National Herbarium</em> 45: 1–590.</p>
<p>Kumar, S., Stecher, G. & Tamura, K. (2016) MEGA7: molecular evolutionary genetics analysis version 7.0 for bigger datasets. <em>Molecular Biology and Evolution</em> 33: 1870–1874. https://doi.org/10.1093/molbev/msw054</p>
<p>Lin, C.W., Chen, C.F. & Yang, T.A. (2015) Two new taxa of Melastomataceae Trib. Sonerileae: <em>Phyllagathis</em> <em>rajah</em> and <em>Sonerila metallica</em> from Batang Ai, Sarawak, Borneo.<em> Phytotaxa</em> 201 (2): 122–130. https://doi.org/10.11646/phytotaxa.201.2.2</p>
<p>Lin, C.W., Chen, C.F. & Yang, T.A. (2017) Ten new species of <em>Phyllagathis</em> (Trib. Sonerileae, Melastomataceae) from Sarawak, Borneo. <em>Phytotaxa</em> 302 (3): 201–228. https://doi.org/10.11646/phytotaxa.302.3.1</p>
<p>Lin, C.W. & Lee, C.H. (2018) <em>Phyllagathis stellata</em> (Sonerileae, Melastomataceae), a new species from southwestern Sarawak, Borneo. <em>Phytotaxa</em> 365: 295–300. https://doi.org/10.11646/phytotaxa.365.3.7</p>
<p>Loureiro, J. (1790) <em>Flora Cochinchinensis vol. 2</em>. Ulyssipone, Lisbon, 387 pp.</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 (2): 175–179. https://doi.org/10.1080/23818107.2016.1166453</p>
<p>Nayar, M.P. (1969) <em>Pseudodissochaeta</em>: A new genus of Melastomataceae. <em>Journal of the Bombay Natural History Society</em> 65 (3): 557–568.</p>
<p>Newman, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2007) <em>A Checklist of the Vascular Plants of Lao PDR</em>. Royal Botanic Garden Edinburgh, Edinburgh, 375 pp.</p>
<p>Nguyen, L.T., Schmidt, H.A., von Haeseler, A. & Minh, B.Q. (2015) IQ-TREE: a fast and effective stochastic algorithm for estimating maximum-likelihood phylogenies. <em>Molecular Biology and Evolution</em> 32: 268–274. https://doi.org/10.1093/molbev/msu300</p>
<p>Pham, H.H. (2000) <em>An Illustrated Flora of Vietnam vol. 2</em>. Young Publishing House, Hanoi, 951 pp.</p>
<p>Qu, X.J., Moore, M.J., Li, D.Z. & Yi, T.S. (2019) PGA: a software package for rapid, accurate, and flexible batch annotation of plastomes. <em>Plant Methods</em> 15: 50. https://doi.org/10.1186/s13007-019-0435-7</p>
<p>Reginato, M., Neubig, K.M., Majure, L.C. & Michelangeli, F.A. (2016) The first complete plastid genomes of Melastomataceae are highly structurally conserved. <em>Peerj</em> 4: e2715. https://doi.org/10.7717/peerj.2715</p>
<p>Rehder, A. (1917) Corrections and additions to volumes Ⅰ–Ⅲ.<em> In:</em> Wilson, E.H. (Ed.) <em>Plantae Wilsonianae: an enumeration of the woody plants collected in western China for the Arnold Arboretum of Harvard University during the years 1907, 1908, and 1910, Vol. 3</em>. The University Press, Cambridge, pp. 421–3460.</p>
<p>Su, Y.L., Liu, Y. & Liu, Y. (2021) A new species of <em>Phyllagathis</em> (Melastomataceae, Sonerileae) from Guangxi, China. <em>Phytotaxa</em> 500: 117–124. https://doi.org/10.11646/phytotaxa.500.2.4</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>Willdenow, C.L. (1802) Diadelphia Decandria. Species Plantarum. Editio Quarta 3 (2): 899–1419.</p>
<p>Zeng, S.J., Zou, L.H., Wang, P., Hong, W.J., Zhang, G.Q., Chen, L.J. & Zhuang, X.Y. (2016) Preliminary phylogeny of <em>Fordiophyton</em> (Melastomataceae), with the description of two new species. <em>Phytotaxa</em> 247 (1): 45–61. http://dx.doi.org/10.11646/phytotaxa.247.1.3</p>
<p>Zhou, Q.J., Dai, J.H., Lin, C.W., Denda, T., Zhou, R.C. & Liu, Y. (2019a) Recircumscription of <em>Bredia</em> and resurrection of <em>Tashiroea</em> (Sonerileae, Melastomataceae) with description of a new species <em>T. villosa</em>. <em>Phytokeys</em> 127: 121–150. https://doi.org/10.3897/phytokeys.127.36608</p>
<p>Zhou, Q.J., Lin, C.W., Dai, J.H., Zhou, R.C. & Liu, Y. (2019b) 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. (2019c) 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>de Candolle, A.P. (1825) Ordo LXIII. Leguminosae. <em>Prodromus Systematis Naturalis Regni Vegetabilis</em> 2: 93–524.</p>
<p>Capella-Gutiérrez, S., Silla-Martínez, J.M. & Gabaldón, T. (2009) trimAl: a tool for automated alignment trimming in large-scale phylogenetic analyses. <em>Bioinformatics</em> 25: 1972–1973. https://doi.org/10.1093/bioinformatics/btp348</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>Cellinese, N. (2002) Revision of the genus <em>Phyllagathis</em> Blume (Melastomataceae: Sonerileae). I. The species of 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. Blumea 48: 69–97. https://doi.org/10.3767/000651903x686060</p>
<p>Chen, C. (1984a) Melastomataceae. <em>In:</em> Chen, C. (Ed.) <em>Flora Reipublicae Popularis Sinicae vol. 53.</em> Science Press, Beijing, pp. 135–293.</p>
<p>Chen, C. (1984b) Materia ad flora Melastomataceae sinensium. <em>Bulletin of Botanical Research</em> 4: 33–68.</p>
<p>Chen, C. & Renner, S.S. (2007) Melastomataceae. <em>In:</em> Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.) <em>Flora of China vol. 13</em>. Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, pp. 377–384.</p>
<p>Chen, H.L., Nong, S.Y., Liu, Y. & Liu, Y. (2021) A new species of <em>Phyllagathis</em> (Sonerileae, Melastomataceae) from Guangxi, China. <em>Phytotaxa</em> 509: 225–232. https://doi.org/10.11646/phytotaxa.509.2.5</p>
<p>Diels, F.L.E. (1932) Beiträge zur kenntnis der Melastomataceen ostasiens. B<em>otanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie</em> 65: 97–119.</p>
<p>Edgar, R.C. (2004) MUSCLE: multiple sequence alignment with high accuracy and high throughput. <em>Nucleic Acids Research </em>32: 1792–1797. https://doi.org/10.1093/nar/gkh340</p>
<p>Hansen, C. (1990) <em>Tylanthera</em> (Melastomataceae), a new genus of two species endemic to Thailand. <em>Nordic Journal of Botany</em> 9: 631–635. <br>https://doi.org/10.1111/j.1756-1051.1990.tb00552.x</p>
<p>Hansen, C. (1992) The genus <em>Phyllagathis</em> (Melastomataceae): characteristics; delimitation; the species in Indo-China and China. <em>Bulletin du Muséum National d’Histoire Naturelle, B, Adansonia</em> 14: 355–428.</p>
<p>Hoang, D.T., Chernomor, O., von Haeseler, A., Minh, B.Q. & Vinh, L.S. (2018) UFBoot2: improving the ultrafast bootstrap approximation. <em>Molecular Biology and Evolution</em> 35: 518–522. https://doi.org/10.1093/molbev/msx281</p>
<p>Hu, S.Y. (1952) Notes on the Flora of China, II. Journal of the Arnold Arboretum 33: 166–178.</p>
<p>Jack, W. (1823) On the Malayan Species of Melastoma. <em>Transactions of the Linnean Society of London</em> 14: 1–22. https://doi.org/10.1111/j.1095-8339.1823.tb00077.x</p>
<p>Jin, J.J., Yu, W.B., Yang, J.B., Song, Y., dePamphilis, C.W., Yi, T.S. & Li, D.Z. (2020) GetOrganelle: a fast and versatile toolkit for accurate de novo assembly of organelle genomes. <em>Genome Biology </em>21: 241. https://doi.org/10.1186/s13059-020-02154-5</p>
<p>Katoh, K. & Standley, D.M. (2013) MAFFT Multiple Sequence Alignment Software Version 7: improvements in performance and usability. <em>Molecular Biology and Evolution</em> 30: 772–780. https://doi.org/10.1093/molbev/mst010</p>
<p>Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003) A checklist of the trees, shrubs, herbs, and climbers of Myanmar. <em>Contributions from the United States National Herbarium</em> 45: 1–590.</p>
<p>Kumar, S., Stecher, G. & Tamura, K. (2016) MEGA7: molecular evolutionary genetics analysis version 7.0 for bigger datasets. <em>Molecular Biology and Evolution</em> 33: 1870–1874. https://doi.org/10.1093/molbev/msw054</p>
<p>Lin, C.W., Chen, C.F. & Yang, T.A. (2015) Two new taxa of Melastomataceae Trib. Sonerileae: <em>Phyllagathis</em> <em>rajah</em> and <em>Sonerila metallica</em> from Batang Ai, Sarawak, Borneo.<em> Phytotaxa</em> 201 (2): 122–130. https://doi.org/10.11646/phytotaxa.201.2.2</p>
<p>Lin, C.W., Chen, C.F. & Yang, T.A. (2017) Ten new species of <em>Phyllagathis</em> (Trib. Sonerileae, Melastomataceae) from Sarawak, Borneo. <em>Phytotaxa</em> 302 (3): 201–228. https://doi.org/10.11646/phytotaxa.302.3.1</p>
<p>Lin, C.W. & Lee, C.H. (2018) <em>Phyllagathis stellata</em> (Sonerileae, Melastomataceae), a new species from southwestern Sarawak, Borneo. <em>Phytotaxa</em> 365: 295–300. https://doi.org/10.11646/phytotaxa.365.3.7</p>
<p>Loureiro, J. (1790) <em>Flora Cochinchinensis vol. 2</em>. Ulyssipone, Lisbon, 387 pp.</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 (2): 175–179. https://doi.org/10.1080/23818107.2016.1166453</p>
<p>Nayar, M.P. (1969) <em>Pseudodissochaeta</em>: A new genus of Melastomataceae. <em>Journal of the Bombay Natural History Society</em> 65 (3): 557–568.</p>
<p>Newman, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2007) <em>A Checklist of the Vascular Plants of Lao PDR</em>. Royal Botanic Garden Edinburgh, Edinburgh, 375 pp.</p>
<p>Nguyen, L.T., Schmidt, H.A., von Haeseler, A. & Minh, B.Q. (2015) IQ-TREE: a fast and effective stochastic algorithm for estimating maximum-likelihood phylogenies. <em>Molecular Biology and Evolution</em> 32: 268–274. https://doi.org/10.1093/molbev/msu300</p>
<p>Pham, H.H. (2000) <em>An Illustrated Flora of Vietnam vol. 2</em>. Young Publishing House, Hanoi, 951 pp.</p>
<p>Qu, X.J., Moore, M.J., Li, D.Z. & Yi, T.S. (2019) PGA: a software package for rapid, accurate, and flexible batch annotation of plastomes. <em>Plant Methods</em> 15: 50. https://doi.org/10.1186/s13007-019-0435-7</p>
<p>Reginato, M., Neubig, K.M., Majure, L.C. & Michelangeli, F.A. (2016) The first complete plastid genomes of Melastomataceae are highly structurally conserved. <em>Peerj</em> 4: e2715. https://doi.org/10.7717/peerj.2715</p>
<p>Rehder, A. (1917) Corrections and additions to volumes Ⅰ–Ⅲ.<em> In:</em> Wilson, E.H. (Ed.) <em>Plantae Wilsonianae: an enumeration of the woody plants collected in western China for the Arnold Arboretum of Harvard University during the years 1907, 1908, and 1910, Vol. 3</em>. The University Press, Cambridge, pp. 421–3460.</p>
<p>Su, Y.L., Liu, Y. & Liu, Y. (2021) A new species of <em>Phyllagathis</em> (Melastomataceae, Sonerileae) from Guangxi, China. <em>Phytotaxa</em> 500: 117–124. https://doi.org/10.11646/phytotaxa.500.2.4</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>Willdenow, C.L. (1802) Diadelphia Decandria. Species Plantarum. Editio Quarta 3 (2): 899–1419.</p>
<p>Zeng, S.J., Zou, L.H., Wang, P., Hong, W.J., Zhang, G.Q., Chen, L.J. & Zhuang, X.Y. (2016) Preliminary phylogeny of <em>Fordiophyton</em> (Melastomataceae), with the description of two new species. <em>Phytotaxa</em> 247 (1): 45–61. http://dx.doi.org/10.11646/phytotaxa.247.1.3</p>
<p>Zhou, Q.J., Dai, J.H., Lin, C.W., Denda, T., Zhou, R.C. & Liu, Y. (2019a) Recircumscription of <em>Bredia</em> and resurrection of <em>Tashiroea</em> (Sonerileae, Melastomataceae) with description of a new species <em>T. villosa</em>. <em>Phytokeys</em> 127: 121–150. https://doi.org/10.3897/phytokeys.127.36608</p>
<p>Zhou, Q.J., Lin, C.W., Dai, J.H., Zhou, R.C. & Liu, Y. (2019b) 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. (2019c) 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>