Abstract
We describe Begonia caryotarum (B. sect. Platycentrum), a new species from southeast Yunnan, China, found in rock crevices at the foot of limestone hills in Caryota obtusa forest at elev. 700–900 m. The new species is most similar to B. hekouensis in having the same vestiture type on the petioles, flower tepal number, placentation structure, and ovary shape and color, but differs mainly in its leaf blade being asymmetric with an acute apex, tepals pinkish- to orangish-red, larger staminate tepals, anther connectives slightly extended, stigma once spiraled. Its conservation status is categorized as Critically Endangered [CR B2ab (ii, iv), C2a(i)].
References
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Huang, S.H. & Shui, Y.M. (1994) New taxa of Begonia from Yunnan. Acta Botanica Yunnanica 16 (4): 333–342.
Hughes, M., Moonlight, P.W., Jara-Muñoz, A., Tebbitt, M.C., Wilson, H.P. & Pullan, M. (2015 onwards) Begonia Resource Centre. Online database available from: https://padme.rbge.org.uk/begonia/ (accessed 11 November 2021)
IUCN Standards and Petitions Subcommittee (2019) Guidelines for Using the IUCN Red List Categories and Criteria, Version 14. Prepared by the Standards and Petitions Subcommittee. Available from: https://www.iucnredlist.org/resources/redlistguidelines (accessed 11 November 2021)
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Moonlight, P., Ardi, W.H., Padilla, L.A., Chung, K.F., Fuller, D., Girmansyah, D., Hollands, R., Jara-Muñoz, A., Kiew, R., Leong, W.C.,Liu, Y., Mahardika, A., Marasinghe, L.D.K., Connor, M.O., Peng, C.I., Pérez, Á.J., Phutthai, T., Pullan, M., Rajbhandary, S., Reynel, C., Rubite, R.R., Sang, J., Scherberich, D., Shui, Y.M., Tebbitt, M.C., Thomas, D.C., Wilson, H.P., Zaini, N.H. & Hughes, M. (2018) Dividing and conquering the fastest-growing genus: Towards a natural sectional classification of the mega-diverse genus Begonia (Begoniaceae). Taxon 67 (2): 267–323. https://doi.org/10.12705/672.3
Shui, Y.M. & Huang, S.H. (1999) Notes on the genus Begonia from Yunnan. Acta Botanica Yunnanica 21 (1): 11–23.
Shui, Y.M. & Chen, W.H. (2017) Begonia of China. Yunnan Science & Technology Press, Kunming, 285 pp.
Shui, Y.M., Chen, W.H., Peng, H., Huang, S.H. & Liu, Z.W. (2019) Taxonomy of Begonias. Yunnan Science and Technology Press, Kunming, 468 pp.
Huang, S.H. & Shui, Y.M. (1994) New taxa of Begonia from Yunnan. Acta Botanica Yunnanica 16 (4): 333–342.
Hughes, M., Moonlight, P.W., Jara-Muñoz, A., Tebbitt, M.C., Wilson, H.P. & Pullan, M. (2015 onwards) Begonia Resource Centre. Online database available from: https://padme.rbge.org.uk/begonia/ (accessed 11 November 2021)
IUCN Standards and Petitions Subcommittee (2019) Guidelines for Using the IUCN Red List Categories and Criteria, Version 14. Prepared by the Standards and Petitions Subcommittee. Available from: https://www.iucnredlist.org/resources/redlistguidelines (accessed 11 November 2021)
Klotzsch, J.F. (1855) Begoniaceen - Gattungen und Arten. Physikalische Abhandlungen der Ko?niglichen Akademie der Wissenschaften zu Berlin 1854: 121–255.
Linneaus, C. (1753) Species plantarum, exhibentes plantas rite cognitas ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas. Homiae: Imprensis Laurentii Salvii, pp. 1056. https://doi.org/10.5962/bhl.title.669
Moonlight, P., Ardi, W.H., Padilla, L.A., Chung, K.F., Fuller, D., Girmansyah, D., Hollands, R., Jara-Muñoz, A., Kiew, R., Leong, W.C.,Liu, Y., Mahardika, A., Marasinghe, L.D.K., Connor, M.O., Peng, C.I., Pérez, Á.J., Phutthai, T., Pullan, M., Rajbhandary, S., Reynel, C., Rubite, R.R., Sang, J., Scherberich, D., Shui, Y.M., Tebbitt, M.C., Thomas, D.C., Wilson, H.P., Zaini, N.H. & Hughes, M. (2018) Dividing and conquering the fastest-growing genus: Towards a natural sectional classification of the mega-diverse genus Begonia (Begoniaceae). Taxon 67 (2): 267–323. https://doi.org/10.12705/672.3
Shui, Y.M. & Huang, S.H. (1999) Notes on the genus Begonia from Yunnan. Acta Botanica Yunnanica 21 (1): 11–23.
Shui, Y.M. & Chen, W.H. (2017) Begonia of China. Yunnan Science & Technology Press, Kunming, 285 pp.
Shui, Y.M., Chen, W.H., Peng, H., Huang, S.H. & Liu, Z.W. (2019) Taxonomy of Begonias. Yunnan Science and Technology Press, Kunming, 468 pp.