Abstract
Selaginella subg. Heterostachys, especially S. sect. Heterostachys and S. sect. Tetragonostachyae, represents the most taxonomically difficult subgenus of Selaginella in China. Here, Selaginella austro-orientalis, a new species in S. sect. Heterostachys from Southeast China is described and illustrated based on morphological and phylogenetic studies. Morphologically, the new species is most similar to S. heterostachys, but differs by its broadly ovate ventral leaves with slightly cuspidate apex and strobili with megasporangia only at ventral side.
References
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Ye, Z.-Y., Lu, N.T., Zhang, L., Zhou, X.-M. & Zhang, L.-B. (2020) Selaginella coriaceifolia (sect. Heterostachys; Selaginellaceae), a new lycophyte species from central Vietnam. Phytotaxa 453 (2): 121–129. https://doi.org/10.11646/phytotaxa.453.2.3
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Zhou, X.-M., Rothfels, C.J., Zhang, L., He, Z.-R., Le P échon, T.L., He, H., Lu, N.T., Knapp, R., Lorence, D., He, X.-J., Gao, X.-F. & Zhang, L.-B. (2016) A large-scale phylogeny of the lycophyte genus Selaginella (Selaginellaceae: Lycopodiopsida) based on plastid and nuclear loci. Cladistics 32: 360–389. http://doi.org/10.1111/cla.12136
Baker, J.G. (1885) A synopsis of the genus Selaginella. Journal of Botany 23: 176–180.
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: e15136. https://doi.org/10.1371/journal.pone.0015136
Franchet, A. & Savatier, P.A.L. (1877–1879) Enumeratio plantarum in Japonia sponte crescentium. Vol. 2. (Lycopodiacea). Savy, Paris, pp. 195–201, 613–616.
Guindon, S. & Gascuel, O. (2003) A simple, fast, and accurate algorithm to estimate large phylogenies by maximum likelihood. Systematic Biology 52: 696–704. https://doi.org/10.1080/10635150390235520
Hall, T.A. (1999) BioEdit: a user-friendly biological sequence alignment editor and analysis program for Windows 95/98/NT. Nucleic Acids Symposium Series 41: 95–98.
He, M., He, Z.-R., Zhang, L.-B. & Zhou, X.-M. (2021) Selaginella qingchengshanensis (sect. Heterostachys; Selaginellaceae), a new species from Sichuan, China. Phytotaxa 522 (4): 285–293. https://doi.org/10.11646/phytotaxa.522.4.2
Huelsenbeck, J.P. & Ronquist, F. (2001) MRBAYES: Bayesian inference of phylogenetic trees. Bioinformatics 17: 754–755. https://doi.org/10.1093/bioinformatics/17.8.754
IUCN. (2022) Guidelines for using the IUCN Red List Categories and Criteria, Version 15.1 Prepared by the Standards and Petitions Subcommittee. [https://nrl.iucnredlist.org/resources/redlistguidelines]
Katoh, K. & Standley, D.M. (2013) MAFFT multiple sequence alignment software version 7: improvements in performance and usability. Molecular Biology and Evolution 30: 772–780. https://doi.org/10.1093/molbev/mst010
Linnaeus, C. (1753) Species plantarum, vol. II. Laurentii Salvii, Stockholm, Sweden.
Miller, M.A., Pfeiffer, W. & Schwartz, T. (2010) Creating the CIPRES Science Gateway for inference of large phylogenetic trees. Proceedings of the Gateway Computing Environments Workshop (GCE). 14 November 2010. New Orleans, LA. pp. 1–8.
Palisot-Beauvois, A.M.F.J. (1804) Suite de l’Aethéogamie. Magasin Encyclopédique 9 (5): 472–483.
Poiret, J.L.M. (1814) Encyclopeìdie meìthodique. Botanique. Supplement 3. H. Agasse, Paris, pp. 1–780. https: //doi.org/10.5962/bhl.title.826
Rambaut, A. & Drummond, A.J. (2007) Tracer 1.4. [http://beast.bio.ed.ac.uk/Tracer]
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
Santorum, J.M., Darriba, D., Taboada, G.L. & Posada, D. (2014) Jmodeltest. org: selection of nucleotide substitution models on the cloud. Bioinformatics 30: 1310–1311. https://doi.org/10.1093/bioinformatics/btu032
Shalimov, A.P., Zhu, Y.-M., Zhang, M.-H. & Zhang, X.-C. (2019) Selaginella dianzhongensis (Selaginellaceae), a new spikemoss from China. PhytoKeys 118: 75–87. http://doi.org/10.3897/phytokeys.118.30375
Spring, A.F. (1838) Beiträge zur Kenntniss der Lycopodien. Flora 21 (1): 145–158.
Spring, A.F. (1843) Enumeratio Lycopodinearum, quas in ejusdem plantarum ordinis monographia mox edenda descripsit Ant. Spring. Pars Altera. II. Selaginella. Bulletin de l’Académie royale des Science et de lettres et des Beaux-arts de Belgique 10: 135–146.
Spring, A.F. (1850) Monographie de la famille des Lycopodiacées, Seconde partie, 24. Mémoires de l’ Académie Royales des Sciences, Lettres et Beaux Arts de Belgique, pp. 1–358. https://doi.org/10.5962/bhl.title.15539
Stamatakis, A., Hoover, P. & Rougemont, J. (2008) A rapid bootstrap algorithm for the RAxML Web servers. Systematic Biology 57: 758–771. https://doi.org/10.1080/10635150802429642
Tryon, A.F. & Lugardon, B. (1991) Spores of the Pteridophyta: surface, wall structure, and diversity based on electron microscope studies. Springer-Verlag, New York, pp. 606–621.
Weststrand, S. & Korall, P. (2016) Phylogeny of Selaginellaceae: There is value in morphology after all! American Journal of Botany 103: 2136–2159. https://doi.org/10.3732/ajb.1600156
Ye, Z.-Y., Lu, N.T., Zhang, L., Zhou, X.-M. & Zhang, L.-B. (2020) Selaginella coriaceifolia (sect. Heterostachys; Selaginellaceae), a new lycophyte species from central Vietnam. Phytotaxa 453 (2): 121–129. https://doi.org/10.11646/phytotaxa.453.2.3
Zhou, X.-M. & Zhang, L.-B. (2015) A classification of Selaginella (Selaginellaceae) based on molecular (chloroplast and nuclear), macromorphological, and spore features. Taxon 64: 1117–1140. https://doi.org/10.12705/646.2
Zhou, X.-M., Rothfels, C.J., Zhang, L., He, Z.-R., Le P échon, T.L., He, H., Lu, N.T., Knapp, R., Lorence, D., He, X.-J., Gao, X.-F. & Zhang, L.-B. (2016) A large-scale phylogeny of the lycophyte genus Selaginella (Selaginellaceae: Lycopodiopsida) based on plastid and nuclear loci. Cladistics 32: 360–389. http://doi.org/10.1111/cla.12136