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Issue: Vol. 690 No. 2: 28 Feb. 2025
Type: Article
Published: 2025-02-28
DOI: 10.11646/phytotaxa.690.2.8
Page range: 276-284
Abstract views: 268
PDF downloaded: 13

Polystichum cretaceum (Polystichum sect. Cyrtogonellum, Dryopteridaceae), a new fern from Guangxi, China

Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China. Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, the Orchid Conservation & Research Center of Shenzhen, Shenzhen, Guangdong 518114, China.
Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, the Orchid Conservation & Research Center of Shenzhen, Shenzhen, Guangdong 518114, China
Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China. South China National Botanical Garden, Guangzhou, Guangdong 510650, China.
Center for Integrative Conservation and Yunnan Key Laboratory for Conservation of Tropical Rainforests and Asian Elephants, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Menglun, 666303, Yunnan, China
Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, the Orchid Conservation & Research Center of Shenzhen, Shenzhen, Guangdong 518114, China
Fairy Lake Botanical Garden, Chinese Academy of Sciences, Shenzhen 518004, Guangdong, China
Guangdong Pharmaceutical University, Guangzhou 510006, Guangdong, China
Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, the Orchid Conservation & Research Center of Shenzhen, Shenzhen, Guangdong 518114, China
new taxon Cyrtogonellum ferns species diversity Pteridophytes rbcL gene chloroplast genome

Abstract

Polystichum (Dryopteridaceae) is a cosmopolitan fern genus known for its rich species diversity, with its primary diversity center in eastern Asia. In this study, we describe a novel species, Polystichum cretaceum, discovered in Napo County, Baise City, Guangxi Zhuang Autonomous Region, China. This species is distinguished by its dwarf habit, fronds simple or 1-pinnate (pinnae 2–4 pairs), pilose or glabrous surface, and fenestrate perispores. This new species resembles P. fraxinellum but differs by having oval pinnae with entire margins and free veins, while P. fraxinellum has ovate-lanceolate pinnae with slightly recurved margins and anastomosing veins. Phylogenetic analysis suggests a close relationship between P. cretaceum and P. minimum. However, P. minimum differs in having obliquely ovate lateral pinnae with shallowly incised-toothed margins and acuminate apices.

References

  1. Adeonipekun, P.A., Adebayo, M.B. & Oyebanji, O.O. (2021) Spore characterisation and its taxonomic significance in ferns from Lagos State, Nigeria. Grana 60 (4): 271–286. https://doi.org/10.1080/00173134.2020.1844794
  2. Capella-Gutiérrez, S., Silla-Martínez, J.M. & Gabaldón, T. (2009) trimAl: A tool for automated alignment trimming in large-scale phylogenetic analyses. Bioinformatics 25: 1972–1973. https://doi.org/10.1093/bioinformatics/btp348
  3. Ching, R.C. (1938) A revision of the Chinese and Sikkim-Himalayan Dryopteris with reference to some species from neighbouring regions. Bulletin of the Fan Memorial Institute of Biology: Botany 8: 275–334.
  4. Driscoll, H.E. & Barrington, D.S. (2007) Origin of Hawaiian Polystichum (Dryopteridaceae) in the context of a world phylogeny. American Journal of Botany 94: 1413–1424. http://dx.doi.org/10.3732/ajb.94.8.1413
  5. Gu, Y.F. (2015) A study on the anatomy of hairs and scales in ferns. Masteral dissertation. Shanghai Normal University, Shanghai, China, 136pp.
  6. Gu, Y.F., Shu, J.P., Lu, Y.J., Shen, H., Shao, W., Zhou, Y., Sun, Q.M., Chen, J.B., Liu, B.D. & Yan, Y.H. (2023) Insights into cryptic speciation of quillworts in China. Plant Diversity 45 (3): 284–301. https://doi.org/10.1016/j.pld.2022.11.003
  7. Harris, J.G. & Harris, M.W. (2001) Plant identification terminology: an illustrated glossary. Translated by Wang, Y.F., et al. Beijing: Science Press, Beijing, 302 pp. [Originally published in 1994]
  8. Hsieh, Y.T. & Li, N. (1989) New taxa of genus Cyrtogonellum Cing. Buletin of Botanical Research 9 (3): 15–20.
  9. Jin, J.J., Yu, W.B., Yang, J.B., Song, Y., dePamphilis, C.W., Yi, T.S. & Li, D.Z. (2020) GetOrganelle: A fast and versatile toolkit for accurate de novo assembly of organelle genomes. Genome Biology 21 (1): 241. https://doi.org/10.1186/s13059-020-02154-5
  10. Katoh, K. & Standley, D.M. (2013) MAFFT multiple sequence alignment software version 7: improvements in performance and usability. Molecular Biology and Evolution 30 (4): 772–780. https://doi.org/10.1093/molbev/mst010
  11. Kessler, M., Smith, A.R. & Sundue, M. (2005) Notes on the genus Polystichum (Dryopteridaceae) in Bolivia, with descriptions of ten new species. Brittonia 57 (3): 205–227. https://doi.org/10.1663/0007-196X(2005)057[0205:NOTGPD]2.0.CO;2
  12. Kramer, K.U., Holttum, R.E., Moran, R.C. & Smith, A.R. (1990) Dryopteridaceae. In: Kubitzki, K. (Ed.) The families and genera of vascular plants, vol. 1. Pteridophytes and gymnosperms. Springer-Verlag, Berlin, pp. 101–144. https://doi.org/10.1007/978-3-662-02604-5_23
  13. Kunze, G. (1848) Pteridographia Japonica. Botanische Zeitung (Berlin) 6: 569–573.
  14. Le Péchon, T., He, H., Zhang, L., Zhou, X.M., Gao, X.F. & Zhang, L.B. (2016) Using a multilocus phylogeny to test morphology-based classifications of Polystichum (Dryopteridaceae), one of the largest fern genera. Bmc Evolutionary Biology 16: 55. https://doi.org/10.1186/s12862-016-0626-z
  15. Li, C.X., Lu, S.G. & Yang, Q. (2004) Asian origin for Polystichum (Dryopteridaceae) based on rbcL sequences. Chinese Science Bulletin 49: 1146–1150. https://doi.org/10.1360/04wc0086
  16. Li, C.X., Lu, S.G. & Barrington, D.S. (2008) Phylogeny of Chinese Polystichum (Dryopteridaceae) based on chloroplast DNA sequence data (trnL-F and rps4-trnS). Journal of Plant Research 121: 19–26. https://doi.org/10.1007/s10265-007-0120-1
  17. Little, D.P. & Barrington, D.S. (2003) Major evolutionary events in the originand diversification of the fern genus Polystichum (Dryopteridaceae). American Journal of Botany 90 (3): 508–514. https://doi.org/10.3732/ajb.90.3.508
  18. Liu, B. et al. (2024) China Checklist of Higher Plants. In: Biodiversity Committee of Chinese Academy of Sciences (Ed.) Catalogue of Life China: 2024 Annual Checklist. Beijing, China. Available from: http://www.sp2000.org.cn/ (accessed 27 February 2025)
  19. Liu, H.M., Zhang, X.C., Chen, Z.D. & Qiu, Y.L. (2007a) Inclusion of the Eastern Asia endemic genus Sorolepidium in Polystichum (Dryopteridaceae): Evidence from the chloroplast rbcL gene and morphological characteristics. Chinese Science Bullent 52: 631–638. https://doi.org/10.1007/s11434-007-0115-2
  20. Liu, H.M., Zhang, X.C., W, W., Qiu, Y.L. & Chen, Z.D. (2007b) Molecular phylogeny of the fern family Dryopteridaceae inferred from chloroplast rbcL and atpB genes. International Journal of Plant Sciences 168 (9): 1311–1323. https://doi.org/10.1086/521710
  21. Liu, H.M. & Zeng, H. (2010) Observation of Morphological characteristics of the genus Cyrtogonellum Ching (Dryopteridaceae). Bulletin of Botanical Research 30 (04): 397–404. https://doi.org/10.7525/j.issn.1673-5102.2010.04.004
  22. Liu, H.M., Zhang, X.C., Wang, W. & Zeng, H. (2010) Molecular phylogeny of the endemic fern genera Cyrtomidictyum and Cyrtogonellum (Dryopteridaceae) from East Asia. Organisms Diversity & Evolution 10: 57–68. https://doi.org/10.1007/s13127-010-0010-6
  23. Liu, E., Liu, H.Y. & Liu, Y.C. (2024) Spore SEM studies on the genus Polystichum, Dryopteridaceae (Polypodiale, Pteridophyta). Taiwania 69 (2): 185–206. https://doi.org/10.6165/tai.2024.69.185
  24. Lu, J.M., Barrington, D.S. & Li, D.Z. (2007) Molecular phylogeny of the polystichoid ferns in Asia based on rbcL sequences. Systematic Botany 32: 26–33. https://doi.org/10.1600/036364407780360193
  25. Minh, B.Q., Schmidt, H.A., Chernomor, O., Schrempf, D., Woodhams, M.D., von-Haeseler, A. & Lanfear, R. (2020) IQ-TREE 2: New models and efficient methods for phylogenetic inference in the genomic era. Molecular Biology and Evolution 37 (5): 1530–1534. https://doi.org/10.1093/molbev/msaa015
  26. PPG I (2016) A community-derived classification for extant lycophytes and ferns. Journal of Systematics & Evolution 54 (6): 563–603. https://doi.org/10.1111/jse.12229
  27. Presl, C.B. (1836) Tentamen Pteridographiae, seu genera filicacearum praesertim juxta venarum decursum et distributionem exposita. vol. 1. Typis Filiorum Theophili Haase, Pragae, 290 pp. [https://www.biodiversitylibrary.org/item/101553]
  28. Presl, C.B. (1851) Epimeliae botanicae. Typis Filiorum Amadei Haase, Pragae, 264 pp. [https://www.biodiversitylibrary.org/item/100941]
  29. Qu, X.J., Moore, M.J., Li, D.Z. & Yi, T.S. (2019) PGA: A software package for rapid, accurate, and flexible batch annotation of plastomes. Plant Methods 15: 50. https://doi.org/10.1186/s13007-019-0435-7
  30. Rita, E.M., David, S.B., Monique, A.M., João, P.S.C. & Gloria, E.B. (2016) Typifications and synonymy in Polystichum (Dryopteridaceae) from Chile and Argentina. PhytoKeys (65): 91–105. https://doi.org/10.3897/phytokeys.65.8620
  31. Roth, A.W. (1800) Tentamen Florae Germanicae, vol. 3 (1). Lipsiae: Bibliopolio Gleditschiano, pp. 31, 69–71.
  32. Sorsa, P. (1964) Studies on the spore morphology of Fennoscandian fern species. Annales Botanici Fennici 1 (3): 179–201. [http://www.jstor.org/stable/23724600]
  33. Tagawa, M. (1940) Polystichum of Japan, Korea, and Formosa I. Acta Phytotaxonomica et Geobotanica 9: 119–138.
  34. Wang, F.G., Ye, Y.S., Liu, D.M. & Xing, F.W. (2008) Classification and distribution of Cyrtogonellum from limestone in Guangdong. Bulletin of Botanical Research 28 (1): 3–4. https://doi.org/10.7525/j.issn.1673-5102.2008.01.002
  35. Wang, Q.X. (2001) Study on the spore morphology of Polypodiales (Filicales) from China. Doctoral dissertation, Northeast Forestry University, Haerbing, China. 291 pp.
  36. Wick, R.R., Schultz, M.B., Zobel, J. & Holt, K.E. (2015) Bandage: interactive visualisation of de novo genome assemblies. Bioinformatics 31 (20): 3350–3352. https://doi.org/10.1093/bioinformatics/btv383
  37. Zhang, L.B. (2012) Taxonomic and nomenclatural notes on the fern genus Polystichum (Dryopteridaceae) in China. Phytotaxa 60 (1): 57–60. https://doi.org/10.11646/phytotaxa.60.1.8
  38. Zhang, L.B. & Barrington, D.S. (2013) Polystichum. In: Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.) Flora of China, vols. 2–3 (Pteridophytes). Missouri Botanical Garden Press, St. Louis & Science Press, Bejing, pp. 629–713.

How to Cite

Chen, X.-H., Shu, J.-P., Xu, Y.-D., Liu, H.-M., Chen, L.-J., He, J., Zheng, X.-L. & Gu, Y.-F. (2025) Polystichum cretaceum (Polystichum sect. Cyrtogonellum, Dryopteridaceae), a new fern from Guangxi, China. Phytotaxa 690: 276–284. https://doi.org/10.11646/phytotaxa.690.2.8