Research Paper

Two new species of Sedum (Crassulaceae) from Taiwan

Chang-Tse Lu, Hung-Wen Lin, Jenn-Che Wang

Published on: 22 October 2019

Page: 426 - 431

DOI: 10.6165/tai.2019.64.426

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    Abstract

    Based on our morphological observation, we proposed two new Sedum species in Taiwan. Sedum kwanwuense sp. nov. resembles S. morrisonense. However, it differs from the latter in having flatter and longer leaves, and occurring in different habitat, the former growing on humid, rocky slopes under the forest and the latter living on dry rocky slopes beyond the forest. Sedum taiwanalpinum sp. nov. is similar to S. brachyrinchum, but it can be distinguished from the latter by sepal and leaf morphologies (leaf linear-oblong to linear vs. spathulate to linear-oblong, and sepal unequal to subequal, spreading when blossom vs. unequal in length, erect to oblique when blossom). Our observations were supported by a former phylogenetic study. In this paper, besides providing taxonomic descriptions and line drawings of the two new taxa, we also organize an update key to native and naturalized species in Sedum in Taiwan for aiding the identification.

    Keyword: Crassulaceae, phylogeny, Sedum kwanwuense, Sedum taiwanalpinum, Taiwan

    Literature Cited

    Bachman S., J. Moat, A.W. Hill, J. de la Torre and B. Scott. 2011. Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool. ZooKeys 150: 117-126.
    DOI: 10.3897/zookeys.150.2109View Article Google Scholar

    Brown, N.E. 1885. Sedum formorsanum N.E.Br., n. sp. The gardener’s chronicle, series 24 (605): 134.

    Editorial Committee of the Red List of Taiwan Plants. 2017. The Red List of Vascular Plants of Taiwan, 2017. Endemic Species Research Institute, Jiji, Nantou Co., Taiwan.

    Hayata, B. 1908. Flora Montana Formosae. J. Coll. Sci. Imp. Univ. Tokyo 25(19): 94-95.

    Hayata, B. 1912. Icones Plantarum Formosanarum. Ⅱ. 11-13. Bureau of forestry. Taihoku (Taipei). Taiwan.

    Hayata, B. 1913. Icones Plantarum Formosanarum. Ⅲ. 110-113. Bureau of forestry. Taihoku (Taipei). Taiwan.

    Hayata, B. 1916. Icones Plantarum Formosanarum. Ⅵ. 20. Bureau of forestry. Taihoku (Taipei). Taiwan.

    Ito, T., C.C. Yu, K. Nakamura, K.F. Chung, Q.E. Yang, C.X. Fu, Z.C. Qi and G Kokubugata. 2017. Unique parallel radiations of high-mountainous species of the genus Sedum (Crassulaceae) on the continental island of Taiwan. Molecular Phylogenetics and Evolution 113: 9-22.
    DOI: 10.1016/j.ympev.2017.03.028View Article Google Scholar

    Lin, H.W. 1999. A taxonomic study of Sedum L. (Crassulaceae) of Taiwan. Master thesis. National Taiwan Normal University, Taipei, Taiwan.

    Liu, T. S. and N. J. Chung 1977. Sedum. In H. L. Li et al. (eds.) Flora of Taiwan. III 14-24. Epoch. Pub. Taipei.

    Lu, C.T., H.W. Lin, W.T. Liou and J.C. Wang. 2013. Sedum tarokoense (Crassulaceae), a new species from a limestone area in Taiwan. Bot. Stud. 54(1): 57.
    DOI: 10.1186/1999-3110-54-57View Article Google Scholar

    Nikulin, V.Y., S. B. Gontcharova, R. Stephenson and A.A. Gontcharov. 2016. Phylogenetic relationships between Sedum L. and related genera (Crassulaceae) based on ITS rDNA sequence comparisons. Flora 224: 218-229.
    DOI: 10.1016/j.flora.2016.08.003View Article Google Scholar

    Ohba, H. 2001. Crassulaceae. In: Iwatsuki, K., Boufford, D.E. & Ohba, H. (Eds.) Flora of Japan 2b. Kodansha, Tokyo, pp. 21-29.

    Ohba, H. 2003. New names of Sedum uniflorum Hook. & Arn. and its infraspecific taxa (Crassulaceae). J. Jpn Bot. 78: 300-301.

    Su, M.H. and P.F. Lu. 2014. Sedum sarmentosum Bunge (Crassulaceae), a Newly Naturalized Herb in Taiwan. Taiwania 59(1): 82-85.
    DOI: 10.6165/tai.2014.59.82View Article Google Scholar

    Tang, W.S. and T.C. Huang. 1989. Notes on the flora of Taiwan (6) - The Sedoideae (Crassulaceae). Taiwania 34(2): 157-179.
    DOI: 10.6165/tai.1989.34.157View Article Google Scholar

    Tang, W.S. and T.C. Huang. 1993. Crassulaceae. In: Huang, T.C. (Eds.) Flora of Taiwan, vol. 3. Department of Botany, National Taiwan University, Taipei, pp. 15-34.

    Thiede, J. and U. Eggli. 2007. Crassulaceae. In: Kubitzki, K. (Ed.) The Families and Genera of Vascular Plants, vol. 9. Springer, Berlin Heidelberg, pp. 83-118.https://doi.org/10.1007/978-3-540-32219-1_12
    DOI: 10.1007/978-3-540-32219-1_12View Article Google Scholar

    Yamamoto, Y. 1926. Supplementa Iconum Plantarum Formosanarum 2. Department of Forestry, Government research Institute, Taihoku, Formosa, 40 pp. + 2 figs.

    Yamamoto, Y. and H. H. Bartlett. 1932. Observations ad Floran Formosanum V. J. Soc. Trop. Agr. 4:485.