Abstract
Pittosporum napoense, a new species of Pittosporaceae is described and illustrated from limestone areas of Guangxi, China. Morphologically, it is most similar to P. kerrii in paniculate inflorescences with many corymbs, inflorescence axis with ferruginous pubescence, and oblate capsule dehiscing by 2 valves, but it can be easily distinguished from the latter by the indumentum of leaf blade and calyx, the colour of petals, the quantity of ovules and the length of filament. Photographs of this new species, as well as a table to distinguish it from P. kerrii, are provided. The threatened status of the new species is also assessed.
References
- Carolin, R.C. & Bittrich, V. (2018) Pittosporaceae. In: Kadereit, J.W. & Bittrich, V. (Eds.) The Families and Genera of Vascular Plants 15. Springer, Berlin, pp. 539–547. https://doi.org/10.1007/978-3-319-93605-5_11
- Cayzer, L.W., Utteridge, T.M.A. & Chandler, G.T. (2023) Pittosporum (Pittosporaceae) in Malesia and Papuasia. Australian Systematic Botany 36 (3): 206–275. https://doi.org/10.1071/SB22007
- Chen, Z.H., Wu, X.Y., Chen, F., Xie, W.Y. & Jin, X.H. (2021) Pittosporum maoshanense (Pittosporaceae)—a new species from eastern China. Journal of Hangzhou Normal University, Natural Science Edition 20 (3): 257–260. https://doi.org/10.19926/j.cnki.issn.1674-232X.2021.03.006
- Craib, W.G. (1925) Contributions to the Flora of Siam. Additamentum XV. Bulletin of Miscellaneous Information (Royal Botanic Gardens, Kew) 1925 (1): 16–17. https://doi.org/10.2307/4107434
- Gaertner, J. (1788) De fructibus et seminibus plantarum: accedunt seminum centuriae quinque priores cum tabulis Aeneis LXXIX. Stutgardiae & Tubingae, 286 pp. https://doi.org/10.5962/bhl.title.102753
- Gagnepain, M.F. (1908) Bixacées et Pittosporacées asiatiques. Bulletin de la Société Botanique de France 55 (7): 547–548. https://doi.org/10.1080/00378941.1908.10832014
- Gowda, M. (1951) The genus Pittosporum in the Sino-Indian Region. Journal of the Arnold Arboretum 32 (3): 263–343. https://doi.org/10.5962/p.324636
- IUCN. (2012) IUCN Red List Categories and Criteria: Version 3.1. Second edition. IUCN, Gland and Cambridge, iv+32 pp.
- IUCN. (2024) Guidelines for Using the IUCN Red List Categories and Criteria. Version 16. Prepared by the Standards and Petitions Committee. Available from: https://www.iucnredlist.org/resources/redlistguidelines (accessed 1 October 2024)
- Schlessman, M.A., Vary, L., Munzinger, J. & Lowry, P.P. (2014) Incidence, Correlates, and Origins of Dioecy in the Island Flora of New Caledonia. International Journal of Plant Sciences 175 (3): 271–286. https://doi.org/10.1086/674452
- Schlessmann, M.A. (2010) Major events in the evolution of sexual systems in Apiales: ancestral andromonoecy abandoned. Plant Diversity and Evolution 128 (1–2): 233–245. https://doi.org/10.1127/1869-6155/2010/0128-0011
- Zhang, H.T. & Yan, S.Z. (1978) New species of Pittosporum from China. Acta Phytotaxonomica Sinica 16 (4): 88. http://doi.org/10.2307/3393157
- Zhang, H.T. & Yan, S.Z. (1979) Pittosporaceae. In: Zhang, H.T. (Ed.) Flora Reipublicae Popularis Sinicae 35 (2). Science Press, Beijing, China, pp. 1–36.
- Zhang, Z.Y., Zhang, H.T. & Turland, N.J. (2003) Pittosporaceae. In: Wu, C.Y., Raven, P.H. & Hong, D.Y. (Eds.) Flora of China 9. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, pp. 1–17.