Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 689 No. 2: 24 Feb. 2025
Type: Article
Published: 2025-02-24
DOI: 10.11646/phytotaxa.689.2.9
Page range: 262-268
Abstract views: 458
PDF downloaded: 13

Spiradiclis Spiradiclis hechiensis (Rubiaceae), a new cave-dwelling species from Northwest Guangxi, China

Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, 541006, China
College of life sciences, Guangxi Normal University, Guilin 541006, Guangxi, China
College of life sciences, Guangxi Normal University, Guilin 541006, Guangxi, China
College of Forestry, Central South University of Forestry and Technology, Changsha 410004, China
Hechi flora of Guangxi Karst cave new taxon Rubiaceae Spiradiclis Eudicots

Abstract

A new species of Rubiaceae, Spiradiclis hechiensis, is described and illustrated from a cave in the Karst region of Northwest Guangxi, China. Morphologically, it is related to S. pauciflora in the shape and color of the corolla. It can be easily distinguished by the shape of leaf blades, bracts, and calyx lobes, the number of secondary veins and flowers, as well as the size of capsules and seeds. At present, only one population has been confirmed to have approximately 50–100 mature individuals from the type locality. According to the IUCN Red List Categories and Criteria, it is provisionally assessed as Critically Endangered [CR B1+2ab (iii)].

References

  1. Blume, C.L. (1825) Bijdragen tot de flora van nederlandsch Indië. Lands Drukkerij, Batavia, 975 pp. https://doi.org/10.5962/bhl.title.115427
  2. Bremer, B. (2009) A review of molecular phylogenetic studies of Rubiaceae. Annals of the Missouri Botanical Garden 96 (1): 4–26. https://doi.org/10.3417/2006197
  3. Bremer, B. & Manen, J. (2000) Phylogeny and classification of the subfamily Rubioideae (Rubiaceae). Plant Systematics and Evolution 225 (1–4): 43–72. https://doi.org/10.1007/BF00985458
  4. Cai, J.H., Shui, Y.M., Song, X.F. & Wu, L. (2022) Validation of the name Spiradiclis elliptica (Rubiaceae), a new species endemic to southwestern China. Phytotaxa 545: 110–114. https://doi.org/10.11646/phytotaxa.545.1.10
  5. Carlson, M.L., Gisler, S.D. & Kelso, S. (2008) The role of reproductive assurance in the Arctic: a comparative study of a homostylous and distylous species pair. Arctic, Antarctic, and Alpine Research 40 (1): 39–47. https://doi.org/10.1657/1523-0430(06-080)[CARLSON]2.0.CO;2
  6. Chen, T. & Taylor, C.M. (2011) Spiradiclis. In: Wu, Z.Y., Raven, P.H. & Hong, D.Y. (Eds.) Flora of China, vol. 19. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, pp. 330–339.
  7. Deng, S.J., Wen, H.Z., Huang, X.X. & Wang, R.J. (2014) Spiradiclis coriaceifolia and S. tonglingensis spp. nov. (Rubiaceae, Ophiorrhizeae) from Guangxi, China. Nordic Journal of Botany 32: 594–601. https://doi.org/10.1111/njb.00461
  8. Fu, L.F., Monro, A.K. & Wei, Y.G. (2022) Cataloguing vascular plant diversity of karst caves in China. Biodiversity Science 30 (7): 1–7. [in Chinese] https://doi.org/10.17520/biods.2021537
  9. IUCN (2024) The IUCN Red List of Threatened Species. Version 2023-1. Available from: https://www.iucnredlist.org (Accessed 1 March 2024)
  10. Li, J.L., Yuan, Q., Liu, Y., Song, X.F., Pan, B., Qu, C.H. & Wu, L. (2021) Two new species of Spiradiclis (Rubiaceae) from limestone areas in southwestern China. Nordic Journal of Botany 39: e02979. https://doi.org/10.1111/njb.02979
  11. Liu, J., Pan, B., Li, S.W. & Xu, W.B. (2018) Spiradiclis quanzhouensis (Rubiaceae): A new species from limestone area in Guangxi, China. Nordic Journal of Botany 36: 01595. https://doi.org/10.1111/njb.01595
  12. Lo, H.S. (1999) Spiradiclis. In: Lo, H.S. (Ed.) Flora Reipublicae Popularis Sinicae, vol. 71 (1). Science Press, Beijing, pp. 86–110. [in Chinese]
  13. Monro, A.K., Bystriakova, N., Fu, L.F., Wen, F. & Wei, Y.G. (2018) Discovery of a diverse cave flora in China. PLoS ONE 13 (2): e0190801. https://doi.org/10.1371/journal.pone.0190801
  14. Pan, B., Ma, H.S. & Wang, R.J. (2016) Spiradiclis pengshuiensis (Ophiorrhizeae, Rubioideae), a new species from Chongqing, China. PhytoKeys 63: 41–45. https://doi.org/10.3897/phytokeys.63.8016
  15. Pan, B., Tu, R.H., Hareesh, V.S. & Wu, L. (2019) Spiradiclis cavicola (Rubiaceae), a new species from Limestone Caves in Southwestern China. Annales Botanici Fennici 56: 1–4. https://doi.org/10.5735/085.056.0101
  16. Razafimandimbison, S.G. & Rydin, C. (2019) Molecular-based assessments of tribal and generic limits and relationships in Rubiaceae (Gentianales): Polyphyly of Pomazoteae and paraphyly of Ophiorrhizeae and Ophiorrhiza. Taxon 68 (1): 72–79. https://doi.org/10.1002/tax.12023
  17. Rydin, C., Kainulainen, K., Razafimandimbison, S.G., Smedmark, J.E.E. & Bremer, B. (2009) Deep divergences in the coffee family and the systematic position of Acranthera. Plant Systematics and Evolution 278 (1–2): 101–123. https://doi.org/10.1007/s00606-008-0138-4
  18. Sampson, D.A. & Krebs, R.A. (2012) Quantitative evaluation of reciprocal herkogamy in the distylous species, Hedyotis caerulea (Rubiaceae). Plant systematics and evolution 298: 1361–1370. https://doi.org/10.1007/s00606-012-0642-4
  19. Song, X.F., Liu, W.J., Chen, A.X., Yao, Z.M., Lan, H.B. & Wu, L. (2022) Spiradiclis liboensis (Rubiaceae), a new species from limestone mountain areas in Guizhou, China. PhytoKeys 204: 73–81. https://doi.org/10.3897/phytokeys.204.84397
  20. Tong, Y.H., Xia, N.H., Wu, L. & Vu, T.C. (2020) Critical notes on spiradiclis purpureocaerulea H.S. Lo (Rubiaceae) from vietnam. Adansonia 42 (19): 291–296. https://doi.org/10.5252/adansonia2020v42a19
  21. Verdcourt, B. (1958) Remarks on the calassification of the Rubiaceae. Bulletin van den Rijksplantentuin, Brussel 28: 209–281.
  22. Wang, R.J. (2016a) Spiradiclis jingxiensis sp. nov. (Rubiaceae) from Guangxi, China. Nordic Journal of Botany 34: 550–552. https://doi.org/10.1111/njb.01134
  23. Wang, R.J. (2016b) Spiradiclis yangchunensis (Rubiaceae), a new species from Guangdong, China. Plant Science Journal 34: 13–17. https://doi.org/10.11913/PSJ.2095-0837
  24. Wang, R.J., Wen, H.Z., Deng, S.J. & Zhou, L.X. (2015) Spiradiclis danxiashanensis (Rubiaceae), a new species from South China. Phytotaxa 206: 30–36. https://doi.org/10.11646/phytotaxa.206.1.5
  25. Wei, Y.G. (2018) The Distribution and Conservation Status of Native Plants in Guangxi, China. China Forestry Publishing House, Beijing. pp. 457–482. [in Chinese]
  26. Wei, Y.G. (2023) Catalogue and Red List of Plant Species in Guangxi. Beijing: China Forestry Publishing House, Beijing, pp. 654–683. [in Chinese]
  27. Wei, Y.G., Wen, F., Xin, Z.B. & Fu, L.F. (2023) A checklist of wild vascular plants in Guangxi, China. Biodiversity Science 31: 23078. [in Chinese] https://doi.org/10.17520/biods.2023078
  28. Wen, H.Z., Wang, R.J. & Deng, S.J. (2015) Spiradiclis longanensis, a new species of Rubiaceae from China. PhytoKeys 55: 113–117. https://doi.org/10.3897/phytokeys.55.4975
  29. Wen, Z.J., Huang, Y.F., Hu, Y.H. Nguyen, K.S. & Wu, L. (2021) Spiradiclis detianensis (Rubiaceae, Ophiorrhizeae), a new species from southwestern Guangxi, China. PhytoKeys 184: 103–110. https://doi.org/10.1111/njb.02190
  30. Wen, Z.J., Yang, J.C., Xu, Y.F. & Wu, L. (2019) Spiradiclis densa sp. nov. (Rubiaceae) from limestone areas in Guangxi, china. Nordic Journal of Botany 37: e02190. https://doi.org/10.1111/njb.02190
  31. Wikström, N., Neupane, S., Kårehed, J., Motley, T.J. & Bremer, B. (2013) Phylogeny of Hedyotis L. (Rubiaceae: Spermacoceae): redefining a complex Asian-Pacific assemblage. Taxon 62 (2): 357–374. https://doi.org/10.12705/622.2
  32. Wu, L., Li, X., Liu, W.J. & Liu, Q.R. (2019a) Spiradiclis karstana (Rubiaceae), a new species from Yunnan, China. PhytoKeys 117: 1–8. https://doi.org/10.3897/phytokeys.117.28281
  33. Wu, L., Liu, C., Song, X.F. & Chen, Y.S. (2021) Spiradiclis yuanyangensis (Rubiaceae), a new species from Yunnan, China. Phytotaxa 522: 294–300. https://doi.org/ 10.11646/phytotaxa.522.4.3
  34. Wu, L., Tong, Y., Pan, B. & Liu, Q.R. (2016) Spiradiclis glabra sp. nov. (Rubiaceae) from limestone area in Guangdong, China. Nordic Journal of Botany 34: 718–721. https://doi.org/10.1111/njb.01156
  35. Wu, L., Wang, B.M., Pan, B. & Yu, X.L. (2019b) Spiradiclis tubiflora (Rubiaceae), a new cave-dwelling species from southern China. PhytoKeys 130: 217–224. https://doi.org/10.3897/phytokeys.130.34625
  36. Wu, L., Wang, J.L. & Liu, Q.R. (2015a) Spiradiclis pauciflora (Rubiaceae), a new species from limestone areas in Guangxi, China. Annales Botanici Fennici 52: 257–261. https://doi.org/10.5735/085.052.0318
  37. Wu, L., Wang, J.L., Mo, S.S. & Liu, Q.R. (2015b) Spiradiclis glandulosa sp. nov. (Rubiaceae) from limestone areas in southern China. Nordic Journal of Botany 33: 79–82. https://doi.org/10.1111/njb.00577
  38. Zhang, F., Liu, Y., Wen, Z.J. & Wu, L. (2018) Spiradiclis lui, a new species of Rubiaceae from Guangxi, China. Nordic Journal of Botany 2018: e01786. https://doi.org/10.1111/njb.01786

How to Cite

Xiong, C., Sun, F.-Z., Yang, Y.-X. & Wu, L. (2025) Spiradiclis Spiradiclis hechiensis (Rubiaceae), a new cave-dwelling species from Northwest Guangxi, China. Phytotaxa 689 (2): 262–268. https://doi.org/10.11646/phytotaxa.689.2.9