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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Mentink, H. & Baas, P. (1992) Leaf anatomy of the Melastomataceae, Memecylaceae, and Crypteroniaceae. Blumea 37: 189–225.
Van Vliet, G.J.C.M. (1981) Wood anatomy of the palaeotropical Melastomataceae. Blumea 27: 395–462.
Wangwasit, K., Cellinese, N. & Norsaengsri, M. (2010) Phyllagathis nanakorniana (Melastomataceae), a new species from Thailand. Blumea 55: 246–248. https://doi.org/10.3767/000651910X543682
Zhou, Q.J., Lin, C.W., Dai, J.H., Zhou, R.C. & Liu, Y. (2019a) Exploring the generic delimitation of Phyllagathis and Bredia (Melastomataceae): A combined nuclear and chloroplast DNA analysis. Journal of Systematics and Evolution 57: 256–267. https://doi.org/10.1111/jse.12451
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. Frontiers in Plant Science 10: 1477. https://doi.org/10.3389/fpls.2019.01477
Blume, C. L. (1831) Über einige ostindische und besonders javanische Melastomataceen. Flora oder Allgemeine botanische Zietung 14: 465–528.
Cellinese, N. (2002) Revision of the genus Phyllagathis (Melastomataceae: Sonerileae) I. The species in Burma, Thailand, Peninsular Malaysia and Sumatra. Blumea 47: 463–492.
Cellinese, N. (2003) Revision of the genus Phyllagathis (Melastomataceae: Sonerileae) II. The species in Borneo and Natuna Island. Blumea 48: 69–97. https://doi.org/10.3767/000651903X686060
Cellinese, N. & Renner, S.S. (1997) New species and combinations of Sonerila and Phyllagathis (Melastomataceae) from Thailand. Novon 7: 106–112. https://doi.org/10.2307/3392181
Hansen, C. (1992) The genus Phyllagathis (Melastomataceae); Characteristics; delimitation; the species in Indo-China and China. Bulletin du Museum National d’Histoire Naturelle. Section B, Adansonia, Botanique. Phytochimie 14: 355–428.
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 ]
Li, H.L. (1944) Studies in the Melastomataceae of China. Journal of the Arnold Arboretum 25: 1–42.
Lin, C.W., Chen, C.F. & Yang, T.Y.A. (2017) Ten new species of Phyllagathis (Trib. Sonerileae, Melastomataceae) from Sarawak, Borneo. Phytotaxa 302: 201–228. https://doi.org/10.11646/phytotaxa.302.3.1
Mathew, J., Yohannan, R. & George, K.V. (2016) Phyllagathis Blume (Melastomataceae: Sonerileae), a new generic record for India with a new species. Botany Letters 163: 175–179. https://doi.org/10.1080/23818107.2016.1166453
Mentink, H. & Baas, P. (1992) Leaf anatomy of the Melastomataceae, Memecylaceae, and Crypteroniaceae. Blumea 37: 189–225.
Van Vliet, G.J.C.M. (1981) Wood anatomy of the palaeotropical Melastomataceae. Blumea 27: 395–462.
Wangwasit, K., Cellinese, N. & Norsaengsri, M. (2010) Phyllagathis nanakorniana (Melastomataceae), a new species from Thailand. Blumea 55: 246–248. https://doi.org/10.3767/000651910X543682
Zhou, Q.J., Lin, C.W., Dai, J.H., Zhou, R.C. & Liu, Y. (2019a) Exploring the generic delimitation of Phyllagathis and Bredia (Melastomataceae): A combined nuclear and chloroplast DNA analysis. Journal of Systematics and Evolution 57: 256–267. https://doi.org/10.1111/jse.12451
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. Frontiers in Plant Science 10: 1477. https://doi.org/10.3389/fpls.2019.01477