Abstract
A new species of fern, Pteris pseudoamoena (Pteridaceae), was identified and characterized. It is currently found in Guangxi Province, China, and Vietnam. Pteris pseudoamoena shares similar morphological characters with P. amoena and P. mcclurei, but can be distinguished by spores with echinate-tuberculate and auriculate ornamentation, straw-colored stipes, rachises and costae, and mostly free, occasionally interlinked veins. In addition, molecular evidence indicated that the new species is sister to a clade consisting of P. amoena, P. nakasimae and P. mcclurei.
References
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Zhang, L. & Zhang, L.-B. (2018) Phylogeny and systematics of the brake fern genus Pteris (Pteridaceae) based on molecular (plastid and nuclear) and morphological evidence. Molecular Phylogenetics and Evolution 118: 265–285. https://doi.org/10.1016/j.ympev.2017.09.011
Chao, Y.-S., Dong, S.-Y., Chiang, Y.-C., Liu, H.-Y. & Chiou, W.-L. (2012) Extreme multiple reticulate origins of the Pteris cadieri complex (Pteridaceae). International Journal of Molecular Sciences 13 (4): 4523–4544. https://doi.org/10.3390/ijms13044523
Ching, R.-C. (1933) Pteris mcclurei. Bulletin of the Department of Biology, College of Science, Sun Yatsen University 6: 28.
Ebihara, A., Nitta, J.H. & Ito, M. (2010) Molecular species identification with rich floristic sampling: DNA barcoding the pteridophyte flora of Japan. Plos One 5 (12): e15136. https://doi.org/10.1371/journal.pone.0015136
IUCN (2012) IUCN Red List Categories and Criteria, Version 3.1. 2 ed. Gland, Switzerland and Cambridge, UK, 32 pp.
Li, C.-X., Lu, S.-G. & Yang, Q. (2004) Phylogenetics of Pteris (Pteridaceae) from China based on the chloroplast trnL-F intergenic space sequences. Journal of Genetics and Molecular Biology 15 (1): 58–63.
Linnaei, C. (1753) Pteris. In: Species Plantarum Vol. 2. Holmiae, Impensis Laurentii Salvii, pp. 1073.
Ronquist, F. & Huelsenbeck, J.P. (2003) MrBayes 3: Bayesian phylogenetic inference under mixed models. Bioinformatics 19: 1572–1574. https://doi.org/10.1093/bioinformatics/btg180
Schuettpelz, E., Schneider, H., Huiet, L., Windham, M.D. & Pryer, K.M. (2007) A molecular phylogeny of the fern family Pteridaceae: assessing overall relationships and the affinities of previously unsampled genera. Molecular Phylogenetics and Evolution 44: 1172–1185. https://doi.org/10.1016/j.ympev.2007.04.011
Stamatakis, A. (2014) RAxML: a tool for phylogenetic analysis and post-analysis of large phylogenies. Bioinformatics 30: 1312–1313. https://doi.org/10.1093/bioinformatics/btu033
Tryon, R.M. & Tryon, A.F. (1982) Pteris. In: Ferns and Allied Plants: with Special Reference to Tropical America. Springer-Verlag, New York, pp. 332–341. https://doi.org/10.1007/978-1-4613-8162-4
Tryon, R.M., Tryon, A.F. & Kramer, K.U. (1990) Pteridaceae. In: Kramer, K.U. & Green, P.S. (Eds.) The Families and Genera of Vascular Plants, Vol 1. Pteridophytes and Gymnosperms. Springer-Verlag, Berlin, pp. 230–256. https://doi.org/10.1007/978-3-662-02604-5_42
Wang, Q.-X. & Yu, J. (2003) Classification of sore ornamentation in Filicales under SEM. Acta Botanica Yunnanica 25 (3): 313–320. https://doi.org/10.3969/j.issn.2095-0845.2003.03.006
Wang, X.-J., Wang, J.-M., Yang, D.-M., Wang, F.-G., Chen, H.-F. & Lang, Y.-T. (2019) Molecular systematics study on Pteris fauriei complex (Pteridaceae). Guihaia 39 (5): 581–589. https://doi.org/10.11931/guihaia.gxzw201803053
Yang, D.-M. (2011) Systematic studies of Pteris (Pteridaceae) in China. PhD Thesis, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou.
Zhang, G.-M., Liao, W.-B., Ding, M.-Y., Lin, Y.-X., Wu, Z.-H., Zhang, X.-C., Dong, S.-Y., Prado, J., Gilbert, M.G., Yatskievych, G., Ranker, T.A., Hooper, E.A., Alverson, E.R., Metzgar, J.S., Funston, A.M., Masuyama, S. & Kato, M. (2013) Pteridaceae. In: Wu, Z.-Y., Raven, P.H. & Hong, D.-Y. (Eds.) Flora of China, Vols. 2-3, Pteridophytes. Science Press, Beijing. Missouri Botanical Garden Press, St. Louis. pp. 169–256.
Zhang, L., Rothfels, C.J., Ebihara, A., Schuettpelz, E., Le Péchon, T., Kamau, P., He, H., Zhou, X.-M., Prado, J., Field, A., Yatskievych, G., Gao, X.-F. & Zhang, L.-B. (2015) A global plastid phylogeny of the brake fern genus Pteris (Pteridaceae) and related genera in the Pteridoideae. Cladistics 31 (4): 406–423. https://doi.org/10.1111/cla.12094
Zhang, L. & Zhang, L.-B. (2018) Phylogeny and systematics of the brake fern genus Pteris (Pteridaceae) based on molecular (plastid and nuclear) and morphological evidence. Molecular Phylogenetics and Evolution 118: 265–285. https://doi.org/10.1016/j.ympev.2017.09.011