Abstract
Dendrobium fuscifaucium is described here as a new species from Laos PDR. This species was found at a local nursery and was claimed to have been collected from the limestone mountains of Kasi District (Vientiane Province). Detailed description and comparison, comparison with its allied species, D. hekouense, D. luoi and D. wangliangii is provided, along with flowering phenology and information on habitat. Multiple attempts have failed to locate this species in the wild.
References
Averyanov, L.V. (2013) New and rare orchids (Orchidaceae) in the flora of Cambodia and Laos. Turczaninowia 16: 26–46.
Averyanov, L.V., Ponert, J., Nguyen, P.T., Duy, N.V., Khang, N.S. & Nguyen, V.C. (2016a) A survey of Dendrobium Sw. sect. Formosae (Benth. & Hook.f.) Hook.f. in Cambodia, Laos and Vietnam. Adansonia 38: 199–217. https://doi.org/10.5252/a2016n2a5
Averyanov, L.V., Nguyen, K.S., Maisak, T.V., Konstantinov, E.L., Nguyen, T.H. & Bounphanmy, S. (2016b) New and rare orchids (Orchidaceae) in the flora of Cambodia and Laos. Turczaninowia 19: 5–58. https://doi.org/10.14258/turczaninowia.19.3.1
Averyanov, L.V., Nguyen, K.S. & Maisak, T.V. (2018) Chiloschista pulchella (Orchidaceae: Aeridinae) new orchid species from Lao PDR. Taiwania 63: 389–392. https://doi.org/10.6165/tai.2018.63.389
CEPF (2022) Biodiversity Hotspot maps. Conservation International Foundation. Published on the internet: http://www.cepf.net/Pages/default.aspx (accessed 21 January 2022)
Cribb, P., Averyanov, L., Schuiteman, A. & Want, T. (2021) 973. Dendrobium hekouense. Curtis’s Botanical Magazine 38: 82–88. https://doi.org/10.1111/curt.12375
Deng, X.X., Chen, Y.K., Rao, W.H. & Chen, L.J. (2016) Dendrobium luoi, a new species of Orchidaceae from China. Plant Science Journal 34: 9–12. https://doi.org/10.11913/PSJ.2095-0837.2016.10009
Gale, S.W. & Phaxaysombath, T. (2017) Studies in Asian Nervilia (Orchidaceae) VII: Nervilia kasiensis, a new Lao endemic. Blumea 62 (1): 1–5. https://doi.org/10.3767/000651917X694732
Gale, S.W., Schuiteman, A., Watthana, S., Sando, T., Souvannakhoummane, K., Averyanov, L.V. & Suddee, S. (2016) Studies in Asian Nervilia (Nervilieae, Epidendroideae, Orchidaceae) VI: N. mekongensis, a new species from Thailand, Cambodia, Laos and Vietnam. Phytotaxa 247: 267–273. https://doi.org/10.11646/phytotaxa.247.4.4
Gale, S.W., Kumar, P. & Phaxaysombath, T. (2018) A guide to orchids of Laos. Natural History Publications, Borneo, 204 pp.
George, E., George, J.C. & Rakthai, P. (2017) Coelogyne pseudoviscosa, a new Coelogyne species from Laos. Orchideen Journal 24: 3–7.
Govaerts, R., Bernet, P., Kratochvil, K., Gerlach, G., Carr, G., Alrich, P., Pridgeon, A.M., Pfahl, J., Campacci, M.A., Baptista, D.H., Tigges, H., Shaw, J., Cribb, P.J., George, A., Kreuz, K. & Wood, J.J. (2022) World checklist of Orchidaceae. Royal Botanic Gardens, Kew. Available from http://wcsp.science.kew.org/ (accessed 6 January 2022)
Gruß, O., Rungruang, N., Chaisuriyakul, Y. & Dionisio, I. (2014) The Paphiopedilum rungsuriyanum, eine neue Art aus Nord-Laos. Orchideen Journal 21: 3–11.
Hu, G.W., Long, C.L. & Jin, X.H. (2008) Dendrobium wangliangii (Orchidaceae), a new species belonging to section Dendrobium from Yunnan, China. Botanical Journal of the Linnean Society 157: 217–221. https://doi.org/10.1111/j.1095-8339.2008.00800.x
IUCN (2019) Guidelines for using the IUCN Red List categories and criteria, version 14. Prepared by the Standards and Petitions Committee. Available at: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 28 March 2022)
Kumar, P., Gale, S.W., Pedersen, H.Æ., Phaxaysombath, T., Bouamanivong, S. & Fischer, G.A. (2018) Additions to the orchid flora of Laos and taxonomic notes on orchids of the Indo-Burma region. Taiwania 63: 61–83. https://doi.org/10.6165/tai.2018.63.61
Kumar, P., Gale, S.W., Schuiteman, A., Bouamanivong, S. & Fischer, G.A. (2016) Identifying orchid hotspots for biodiversity conservation in Laos: the limestone karst vegetation of Vang Vieng District, Vientiane Province. Journal of Threatened Taxa 8: 9397–9417. https://dx.doi.org/10.11609/jott.2826.8.12.9397-9417
Kumar, P. & Gale, S.W. (2020a) Additions to the orchid flora of Laos and taxonomic notes on orchids of the Indo-Burma region–II. Taiwania 65: 47?60. https://doi.org/10.6165/tai.2020.65.47
Kumar, P., Bouamanivong, S., Fischer, G.A. & Gale, S.W. (2020b) Didymoplexiella laosensis (Orchidaceae: Epidendroideae: Gastrodieae), a new holomycotrophic orchid from Lao PDR. Phytotaxa 430: 1–8. https://doi.org/10.11646/phytotaxa.430.1.1
Liu, Z.J. & Chen, L.J. (2011) Dendrobium hekouense (Orchidaceae), a new species from Yunnan, China. Annales Botanici Fennici 48: 87–90. [https://www.jstor.org/stable/23728247]
Newman, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2007) A checklist of the vascular plants of Lao PDR. Royal Botanic Garden, Edinburgh, 394 pp.
Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F. (2014) Genera orchidacearum, volume 6, Epidendroideae (part three). Oxford University Press, Oxford. 544 pp.
Schuiteman, A. & Bonnet, P. (2009) Holcoglossum calcicola und Paphiopedilum barbigerum var. sulivongii: zwei attractive neue Orchideen der Kalksteinberge von Laos. Orchideen Journal 16: 1–8.
Schuiteman, A., Bonnet, P., Svengsuksa, B. & Barthelémy, D. (2008) An annotated checklist of the Orchidaceae of Laos. Nordic Journal of Botany 26: 257–316.
Schuiteman, A., Sulivong, L.A. & Iio, S. (2018) Paphiopedilum papilio-laoticus (Orchidaceae), a new species from Laos. Orchideen Journal 6: 3–5.
Souvannakhoummane, K., Kumar, P., Gale, S.W., Lanorsavanh, S. & Lamxay, V. (2018) Three new additions to the orchid flora of Lao PDR. Thai Journal of Botany 10: 145–151.
Souvannakhoummane, K., Lanorsavanh, S., Rakthai, P., Kumar, P. & Gale, S.W. (2021) Cymbilabia sourioudongii (Orchidaceae), a new species from Lao PDR. Rheedea 31: 186–190. https://dx.doi.org/10.22244/rheedea.2021.31.03.08
Svengsuksa, B. & Lamxay, V. (2005) Field guide to the orchids of Lao PDR. National University of Lao PDR,Vientiane, 185 pp.
Swartz, O. (1799) Dianome epidendri generis Linn. In: Nova Acta Regiae Societatis Scientiarum Upsaliensis, 2nd ser, part 6. Edman, Uppsala, pp. 61–88.
Thouars, L.M.A. (1822) Histoire particulière des plantes orchidées recueillies sur les trois iles australes d’Afrique, de France, de Bourbon et de Madagascar. Bertrand, Paris, tab. 93.
Tordoff, A.W., Bezuijen, M.R., Duckworth, J.W., Fellowes, J.R., Koenig, K., Pollard, E.H.B. & Royo, A.G. (2011) Ecosystem profile: Indo-Burma biodiversity hotspot. Critical Ecosystem Partnership Fund, 360 pp.
Averyanov, L.V., Ponert, J., Nguyen, P.T., Duy, N.V., Khang, N.S. & Nguyen, V.C. (2016a) A survey of Dendrobium Sw. sect. Formosae (Benth. & Hook.f.) Hook.f. in Cambodia, Laos and Vietnam. Adansonia 38: 199–217. https://doi.org/10.5252/a2016n2a5
Averyanov, L.V., Nguyen, K.S., Maisak, T.V., Konstantinov, E.L., Nguyen, T.H. & Bounphanmy, S. (2016b) New and rare orchids (Orchidaceae) in the flora of Cambodia and Laos. Turczaninowia 19: 5–58. https://doi.org/10.14258/turczaninowia.19.3.1
Averyanov, L.V., Nguyen, K.S. & Maisak, T.V. (2018) Chiloschista pulchella (Orchidaceae: Aeridinae) new orchid species from Lao PDR. Taiwania 63: 389–392. https://doi.org/10.6165/tai.2018.63.389
CEPF (2022) Biodiversity Hotspot maps. Conservation International Foundation. Published on the internet: http://www.cepf.net/Pages/default.aspx (accessed 21 January 2022)
Cribb, P., Averyanov, L., Schuiteman, A. & Want, T. (2021) 973. Dendrobium hekouense. Curtis’s Botanical Magazine 38: 82–88. https://doi.org/10.1111/curt.12375
Deng, X.X., Chen, Y.K., Rao, W.H. & Chen, L.J. (2016) Dendrobium luoi, a new species of Orchidaceae from China. Plant Science Journal 34: 9–12. https://doi.org/10.11913/PSJ.2095-0837.2016.10009
Gale, S.W. & Phaxaysombath, T. (2017) Studies in Asian Nervilia (Orchidaceae) VII: Nervilia kasiensis, a new Lao endemic. Blumea 62 (1): 1–5. https://doi.org/10.3767/000651917X694732
Gale, S.W., Schuiteman, A., Watthana, S., Sando, T., Souvannakhoummane, K., Averyanov, L.V. & Suddee, S. (2016) Studies in Asian Nervilia (Nervilieae, Epidendroideae, Orchidaceae) VI: N. mekongensis, a new species from Thailand, Cambodia, Laos and Vietnam. Phytotaxa 247: 267–273. https://doi.org/10.11646/phytotaxa.247.4.4
Gale, S.W., Kumar, P. & Phaxaysombath, T. (2018) A guide to orchids of Laos. Natural History Publications, Borneo, 204 pp.
George, E., George, J.C. & Rakthai, P. (2017) Coelogyne pseudoviscosa, a new Coelogyne species from Laos. Orchideen Journal 24: 3–7.
Govaerts, R., Bernet, P., Kratochvil, K., Gerlach, G., Carr, G., Alrich, P., Pridgeon, A.M., Pfahl, J., Campacci, M.A., Baptista, D.H., Tigges, H., Shaw, J., Cribb, P.J., George, A., Kreuz, K. & Wood, J.J. (2022) World checklist of Orchidaceae. Royal Botanic Gardens, Kew. Available from http://wcsp.science.kew.org/ (accessed 6 January 2022)
Gruß, O., Rungruang, N., Chaisuriyakul, Y. & Dionisio, I. (2014) The Paphiopedilum rungsuriyanum, eine neue Art aus Nord-Laos. Orchideen Journal 21: 3–11.
Hu, G.W., Long, C.L. & Jin, X.H. (2008) Dendrobium wangliangii (Orchidaceae), a new species belonging to section Dendrobium from Yunnan, China. Botanical Journal of the Linnean Society 157: 217–221. https://doi.org/10.1111/j.1095-8339.2008.00800.x
IUCN (2019) Guidelines for using the IUCN Red List categories and criteria, version 14. Prepared by the Standards and Petitions Committee. Available at: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 28 March 2022)
Kumar, P., Gale, S.W., Pedersen, H.Æ., Phaxaysombath, T., Bouamanivong, S. & Fischer, G.A. (2018) Additions to the orchid flora of Laos and taxonomic notes on orchids of the Indo-Burma region. Taiwania 63: 61–83. https://doi.org/10.6165/tai.2018.63.61
Kumar, P., Gale, S.W., Schuiteman, A., Bouamanivong, S. & Fischer, G.A. (2016) Identifying orchid hotspots for biodiversity conservation in Laos: the limestone karst vegetation of Vang Vieng District, Vientiane Province. Journal of Threatened Taxa 8: 9397–9417. https://dx.doi.org/10.11609/jott.2826.8.12.9397-9417
Kumar, P. & Gale, S.W. (2020a) Additions to the orchid flora of Laos and taxonomic notes on orchids of the Indo-Burma region–II. Taiwania 65: 47?60. https://doi.org/10.6165/tai.2020.65.47
Kumar, P., Bouamanivong, S., Fischer, G.A. & Gale, S.W. (2020b) Didymoplexiella laosensis (Orchidaceae: Epidendroideae: Gastrodieae), a new holomycotrophic orchid from Lao PDR. Phytotaxa 430: 1–8. https://doi.org/10.11646/phytotaxa.430.1.1
Liu, Z.J. & Chen, L.J. (2011) Dendrobium hekouense (Orchidaceae), a new species from Yunnan, China. Annales Botanici Fennici 48: 87–90. [https://www.jstor.org/stable/23728247]
Newman, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2007) A checklist of the vascular plants of Lao PDR. Royal Botanic Garden, Edinburgh, 394 pp.
Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F. (2014) Genera orchidacearum, volume 6, Epidendroideae (part three). Oxford University Press, Oxford. 544 pp.
Schuiteman, A. & Bonnet, P. (2009) Holcoglossum calcicola und Paphiopedilum barbigerum var. sulivongii: zwei attractive neue Orchideen der Kalksteinberge von Laos. Orchideen Journal 16: 1–8.
Schuiteman, A., Bonnet, P., Svengsuksa, B. & Barthelémy, D. (2008) An annotated checklist of the Orchidaceae of Laos. Nordic Journal of Botany 26: 257–316.
Schuiteman, A., Sulivong, L.A. & Iio, S. (2018) Paphiopedilum papilio-laoticus (Orchidaceae), a new species from Laos. Orchideen Journal 6: 3–5.
Souvannakhoummane, K., Kumar, P., Gale, S.W., Lanorsavanh, S. & Lamxay, V. (2018) Three new additions to the orchid flora of Lao PDR. Thai Journal of Botany 10: 145–151.
Souvannakhoummane, K., Lanorsavanh, S., Rakthai, P., Kumar, P. & Gale, S.W. (2021) Cymbilabia sourioudongii (Orchidaceae), a new species from Lao PDR. Rheedea 31: 186–190. https://dx.doi.org/10.22244/rheedea.2021.31.03.08
Svengsuksa, B. & Lamxay, V. (2005) Field guide to the orchids of Lao PDR. National University of Lao PDR,Vientiane, 185 pp.
Swartz, O. (1799) Dianome epidendri generis Linn. In: Nova Acta Regiae Societatis Scientiarum Upsaliensis, 2nd ser, part 6. Edman, Uppsala, pp. 61–88.
Thouars, L.M.A. (1822) Histoire particulière des plantes orchidées recueillies sur les trois iles australes d’Afrique, de France, de Bourbon et de Madagascar. Bertrand, Paris, tab. 93.
Tordoff, A.W., Bezuijen, M.R., Duckworth, J.W., Fellowes, J.R., Koenig, K., Pollard, E.H.B. & Royo, A.G. (2011) Ecosystem profile: Indo-Burma biodiversity hotspot. Critical Ecosystem Partnership Fund, 360 pp.