Abstract
A new species Camchaya bolavenensis (Asteraceae: Vernonieae: Centrapalinae) from Dong Hua Sao National Protected Area located in Bolaven Plateau, southern Laos, is described and illustrated. It resembles C. gracilis and C. thailandica in morphology but distinguished by its basally decumbent stem, margin of lamina with distinct (1–)2–3 teeth, 2–4 mm long on each side, invisible secondary veins, and a capitulum with 10–30 of florets.
References
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Bunwong, S., Chantaranothai, P. & Keeley, S.C. (2014) Revisions and key to the Vernonieae (Compositae) of Thailand. PhytoKeys 37: 25–101. https://doi.org/10.3897/phytokeys.37.6499
Bunwong, S., Robinson, H. & Chantaranothai, P. (2009) Taxonomic notes on Camchaya and Iodocephalus (Vernonieae: Asteraceae), and a new genus Iodocephalopsis. Proceedings of the Biological Society of Washington 122 (3): 357–363. https://doi.org/10.2988/08-45.1
Chen, Y.L. & Gilbert, M.G. (2011) Vernonieae. In: Wu, Z.-Y., Raven, P.H. & Hong, D.-Y. (Eds.) Flora of China, vols. 20–21. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, pp. 354–370.
Clarke, C.B. (1875) Notes on Indian Gentianceae. The Journal of the Linnean Society, Botany 14: 423–457.
Delang, C.O., Toro, M. & Charlet-Phommachanh, M. (2013) Coffee, mines and dams: conflicts over land in the Bolaven Plateau, southern Lao PDR. The Geographical Journal 179: 150–164. https://doi.org/10.1111/j.1475-4959.2012.00481.x
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IUCN Standards and Petitions Committee (2019) Guidelines for using the IUCN Red list categories and criteria. Version 14. Prepared by the Standards and Petitions Committee. Downloadable from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf. (Accessed 23 October 2021)
Kerr, A.H.G. (1935) Camchaya loloana. Bulletin of Miscellaneous Information (Royal Botanic Gardens, Kew) 1935: 327.
Koyama, H. (1984) Taxonomic studies in the Compositae of Thailand 3. Acta Phytotaxonomica et Geobotanica 35: 49–58. https://doi.org/10.18942/bunruichiri.KJ00001078487
Newman, M.F., Pullan, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2017–present) A checklist of the vascular plants of Lao PDR. Online database available from: https://padme.rbge.org.uk/laos/ (accessed 21 February 2022)
Robinson, H.E. (1999) Revisions in paleotropical Vernonieae (Asteraceae). Proceeding of the Biological Society of Washington 112: 220–247.
Souladeth, P., Tagane, S., Newman, M.F. & Prajaksood, A. (2020) Two new species of Eriocaulon (Eriocaulaceae) from Laos. Kew Bulletin 75: 56. https://doi.org/10.1007/s12225-020-09909-0
Bunwong, S., Chantaranothai, P. & Keeley, S.C. (2014) Revisions and key to the Vernonieae (Compositae) of Thailand. PhytoKeys 37: 25–101. https://doi.org/10.3897/phytokeys.37.6499
Bunwong, S., Robinson, H. & Chantaranothai, P. (2009) Taxonomic notes on Camchaya and Iodocephalus (Vernonieae: Asteraceae), and a new genus Iodocephalopsis. Proceedings of the Biological Society of Washington 122 (3): 357–363. https://doi.org/10.2988/08-45.1
Chen, Y.L. & Gilbert, M.G. (2011) Vernonieae. In: Wu, Z.-Y., Raven, P.H. & Hong, D.-Y. (Eds.) Flora of China, vols. 20–21. Science Press, Beijing & Missouri Botanical Garden Press, St. Louis, pp. 354–370.
Clarke, C.B. (1875) Notes on Indian Gentianceae. The Journal of the Linnean Society, Botany 14: 423–457.
Delang, C.O., Toro, M. & Charlet-Phommachanh, M. (2013) Coffee, mines and dams: conflicts over land in the Bolaven Plateau, southern Lao PDR. The Geographical Journal 179: 150–164. https://doi.org/10.1111/j.1475-4959.2012.00481.x
Gagnepain, F. (1920) Camchaya. Notulae Systematicae 4: 14–15.
IUCN Standards and Petitions Committee (2019) Guidelines for using the IUCN Red list categories and criteria. Version 14. Prepared by the Standards and Petitions Committee. Downloadable from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf. (Accessed 23 October 2021)
Kerr, A.H.G. (1935) Camchaya loloana. Bulletin of Miscellaneous Information (Royal Botanic Gardens, Kew) 1935: 327.
Koyama, H. (1984) Taxonomic studies in the Compositae of Thailand 3. Acta Phytotaxonomica et Geobotanica 35: 49–58. https://doi.org/10.18942/bunruichiri.KJ00001078487
Newman, M.F., Pullan, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2017–present) A checklist of the vascular plants of Lao PDR. Online database available from: https://padme.rbge.org.uk/laos/ (accessed 21 February 2022)
Robinson, H.E. (1999) Revisions in paleotropical Vernonieae (Asteraceae). Proceeding of the Biological Society of Washington 112: 220–247.
Souladeth, P., Tagane, S., Newman, M.F. & Prajaksood, A. (2020) Two new species of Eriocaulon (Eriocaulaceae) from Laos. Kew Bulletin 75: 56. https://doi.org/10.1007/s12225-020-09909-0