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Issue: Vol. 650 No. 2: 28 May 2024
Type: Article
Published: 2024-05-28
DOI: 10.11646/phytotaxa.650.2.2
Page range: 148-156
Abstract views: 45
PDF downloaded: 2

Leptochilus tridigitatus (Polypodiaceae), a new fern species from Guangdong, China

Eastern China Conservation Centre for Wild Endangered Plant Resources, Shanghai Chenshan Botanical Garden, Shanghai, 201602, China
Key Laboratory of Mountain Ecological Restoration and Bio-Resources Utilization & Ecological Restoration Biodiversity Conservation, Chengdu Institute of Biology, Chinese Academy of Sciences (CAS), Chengdu, Sichuan 610041, China
Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
Eastern China Conservation Centre for Wild Endangered Plant Resources, Shanghai Chenshan Botanical Garden, Shanghai, 201602, China
Frond dimorphism Leptochilus poilanei lithophyte microsoroid fern variable characters Bryophytes

Abstract

Leptochilus tridigitatus, a new microsoroid fern species of Polypodiaceae from southwestern Guangdong, China, is described and illustrated. The new species is morphologically highly variable and most similar to L. poilanei in dimorphic fronds and simple or trifid laminae, while its fertile fronds are most similar to some of those of L. digitatus. The new species can best be distinguished from L. digitatus but sometimes is confused with L. scandens due to its occasionally pinnatifid laminae with two pairs of lateral lobes. It might have been collected from South China and misidentified as L. digitatus or other Leptochilus species.

References

  1. Blume, C. (1828) Filices. In: Blume, C. (Ed.) Enumeratio plantarum Javae et insularum adjacentium. Vol. 2. Apud J.W. van Leeuwen, Lugduni Batavorum [Leiden], pp. 99–274. https://doi.org/10.5962/bhl.title.44901
  2. Ching, R.-C. (1933) Studies of Chinese ferns X. Bulletin of the Fan Memorial Institute of Biology 4: 293–362.
  3. Christensen, C. & Tardieu-Blot, M. (1939) Les Fougères d’Indochine. XV. Dipteroideae.—XVI. Polypodioideae.—XVII. Elaphoglossoideae. Notulae Systematicae 8: 175–210.
  4. Christ, H. (1906) Filices Cavalerianae II. Bulletin de l’Académie Internationale de Géographie Botanique 16: 233–252.
  5. Fraser-Jenkins, C.R. (2008) Taxonomic Revision of Three Hundred Indian Subcontinental Pteridophytes with a Revised Census-list, a new picture of fern-taxonomy and nomenclature in the Indian subcontinent. Bishen Singh Mahendra Pal Singh, Dehra Dun, India, 62 pp.
  6. Fraser-Jenkins, C.R., Gandhi, K.N., Kholia, B.S. & Kandel, D.R. (2021) An Annotated Checklist of Indian Pteridophytes, Part-3 (Lomariopsidaceae to Salviniaceae). Bishen Singh Mahendra Pal Singh, Dehra Dun, India, pp. 155–156.
  7. Fujiwara, T, Quang, B.H., Tagane, S., Murakami, N. & Oguri, E. (2023) Leptochilus ornithopus (Polypodiaceae), a new hemiepiphytic fern species from central highlands of Vietnam. Phytotaxa 584: 149–160. https://doi.org/10.11646/phytotaxa.584.3.2
  8. Hance, H.F. (1883) Heptadem filicum novarum sinicarum. Journal of Botany, British and Foreign 21: 267–270.
  9. Hayata, B. (1919) Icones plantarum formosanarum nec non et contributiones ad floram formosanam 8: Icones of the plants of Formosa, and materials for a flora of the island, based on a study of the collections of the Botanical survey of the Government of Formosa. Bureau of Productive Industries, Government of Formosa, Taihoku, 154 pp. Available from: https://www.biodiversitylibrary.org/bibliography/24988 (accessed 27 May 2024)
  10. Hooker, W.J. & Greville, R.K. (1827–1831) Icones Filicum. Vol. 1. Treuttel & Würtz, Treuttel fil. & Richter, London, TAB V. https://doi.org/10.5962/bhl.title.3867
  11. Kaulfuss, G.F. (1824) Enumeratio filicum quas in itinere circa terram legit Cl. Adalbertus de Chamisso adiectis in omnia harum plantarum genera permultasque species non satis cognitas vel novas animadversionibus. Sumtibus Caroli Cnobloch, Leipzig, 147 pp.
  12. Miller, M.A., Pfeiffer, W. & Schwartz, T. (2010) Creating the CIPRES Science Gateway for inference of large phylogenetic trees. In: Proceedings of the Gateway Computing Environments Workshop (GCE), 14 November 2010. New Orleans, LA, pp. 1–8. https://doi.org/10.1109/GCE.2010.5676129
  13. Moore, T. (1855) New garden ferns. No. VⅠ. The Gardeners' Chronicle & Agricultural Gazette 43: 708–709.
  14. Murray, J.A. (1784) Caroli à Linné epuitis Systema vegetabilium, secundum classes ordines genera species cum characteribus et differentiis. Typis et impensis Jo. Christ. Dieterich, Göttingen, 935 pp. https://doi.org/10.5962/bhl.title.549
  15. Nooteboom, H.P. (1997) The microsoroid ferns (Polypodiaceae). Blumea 42: 261–395.
  16. 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
  17. Wang, L., Wu, Z.-Q., Heinrichs, J., Xiang, Q.-P., Schneider, H. & Zhang, X.-C. (2010) A molecular phylogeny and a revised classification of tribe Lepisoreae (Polypodiaceae) based on an analysis of four plastid DNA regions. Botanical Journal of the Linnean Society 162: 28–38. https://doi.org/10.1111/j.1095-8339.2009.01018.x
  18. Wei, H.-J., Huang, Y. & Chen, B. (2023) Leptochilus scandens (Polypodiaceae), a new microsoroid fern species from Guangdong, China. Phytotaxa 618: 79–85. https://doi.org/10.11646/phytotaxa.618.1.7
  19. Zhang, L., Guo, L. & Zhang, L.-B. (2018) New combinations in the fern genus Leptochilus (Polypodiaceae). Phytotaxa 374: 172–176. https://doi.org/10.11646/phytotaxa.374.2.10
  20. Zhang, L., Lu, N.T., Zhou, X.-M., Chen, D.-K., Knapp, R., Zhou, L., Guo, L., Luong, T.T., Sun, H., Gao, X.-F. & Zhang, L.-B. (2019) A plastid phylogeny of the Old World fern genus Leptochilus (Polypodiaceae): Implications for cryptic speciation and progressive colonization from lower to higher latitudes. Molecular Phylogenetics and Evolution 134: 311–322. https://doi.org/10.1016/j.ympev.2019.01.013
  21. Zhang, X.-C. & Nooteboom, H.P. (2013) Leptochilus. In: Wu, Z.-Y., Raven, P.H., Hong, D.-Y. (Eds.) Flora of China. Vols. 2–3: Pteridophytes. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis, pp. 833–838.
  22. Zhang, Z., Yao, S.-W., Huang, Y., Xu, Z.-H., Sun, Q.-M. & Liu, X.-J. (2023) Leptochilus ovatifolius, a new species of Polypodiaceae from Guangdong. Journal of Southwest Forestry University 43: 183–187. Available from: http://xnldxb.ns.swfu.edu.cn/article/doi/10.11929/j.swfu.202207021 (accessed 27 May 2024)