Distribution and habitats of Paphiopedilum Pfitzer (Orchidaceae) known to occur in Bhutan

Main Article Content

Dhan Bahadur Gurung
https://orcid.org/0000-0001-8082-5181
Nima Gyeltshen
https://orcid.org/0000-0002-3227-006X
Kezang Tobgay
https://orcid.org/0000-0001-6904-4202
Stig Dalström
https://orcid.org/0000-0001-5268-8896
Jangchuk Wangdi
http://orcid.org/0000-0002-3685-1435
Bhakta Bahadur Ghalley
https://orcid.org/0000-0001-8399-9849
Lekey Chaida
https://orcid.org/0000-0003-3812-1708
Phuntsho Phuntsho
https://orcid.org/0000-0002-7112-6095
Ngawang Gyeltshen
ttps://orcid.org/0000-0002-4063-0272
Kelzang Dawa
https://orcid.org/0000-0003-4539-2426
Tandin Wangchuk
https://orcid.org/0000-0001-6790-6278
Rebecca Pradhan
https://orcid.org/0000-0003-0954-8227
Thomas Axel Ivan Hoijer
https://orcid.org/0000-0002-2615-1152
Choki Gyeltshen
https://orcid.org/0000-0001-6790-6278

Abstract

Paphiopedilum fairrieanum, P. spicerianum, and P. venustum (Orchidaceae: Cypripedioideae) are reported to occur in Bhutan, of which the former is known to be Critically Endangered and the latter two are Endangered.  Based on numerous field trips conducted over the last decade, populations of P. fairrieanum and P. venustum were located in Bhutan.  No individual of P. spicerianum, however, was found despite many search attempts.  Its occurrence in Bhutan may have been originally erroneous.  Based on the accessibility of the habitats, six 10m × 10m quadrats were defined to enumerate the plant species found in the Paphiopedilum habitats.  Vegetation analyses and cluster dendrograms of the plant species composition indicated the presence of three forest types with distinct species compositions.  Paphiopedilum fairrieanum was found growing mainly as a lithophyte on seasonally dry limestone cliffs or on limestone outcrops with a comparatively open forest canopy.  These populations were mostly located on southwest- or northwest-facing slopes with soil pH ranging from 7.1 to 7.8.  Paphiopedilum venustum, in contrast, was a ground-dwelling species restricted to relatively dense forests with soil pH ranging from 7.1 to 7.5.

Article Details

How to Cite
[1]
Gurung, D.B., Gyeltshen, N., Tobgay, K., Dalström, S., Wangdi, J., Ghalley, B.B., Chaida, L., Phuntsho, P., Gyeltshen, N., Dawa, K., Wangchuk, T., Pradhan, R., Hoijer, T.A.I. and Gyeltshen, C. 2019. Distribution and habitats of Paphiopedilum Pfitzer (Orchidaceae) known to occur in Bhutan. Journal of Threatened Taxa. 11, 9 (Jul. 2019), 14101–14111. DOI:https://doi.org/10.11609/jott.3431.11.9.14101-14111.
Section
Communications
Author Biographies

Dhan Bahadur Gurung, College of Natural Resources, College of Natural Resources, Royal University of Bhutan, Lobesa, Bhutan.

Ministry of Education, Bhutan.

Kezang Tobgay, National Biodiversity Centre, Ministry of Agriculture and Forests, Serbithang, Thimphu, Bhutan.

National Biodiversity Centre, Ministry of Agriculture and Forests, Bhutan.

Stig Dalström, Lankester Botanical Garden, University of Costa Rica, Cartago, Costa Rica; and the National Biodiversity Centre, Serbithang, Thimphu 11001, PO. Box. 875 Bhutan.

Lankester Botanical Garden, University of Costa Rica and a researcher in the National Biodiversity Centre, Bhutan.

Jangchuk Wangdi, Department of Forests and Park Services, Ministry of Agriculture and Forests, P.O. Box. 1345, Thimphu 11001, Bhutan.

Department of Forests and Park Services, Ministry of Agriculture and Forests, Bhutan.

Bhakta Bahadur Ghalley, Department of Forests and Park Services, Ministry of Agriculture and Forests, P.O. Box. 1345, Thimphu 11001, Bhutan.

Department of Forests and Park Services, Ministry of Agriculture and Forests, Bhutan.

Lekey Chaida, Department of Forests and Park Services, Ministry of Agriculture and Forests, P.O. Box. 1345, Thimphu 11001, Bhutan.

Department of Forests and Park Services, Ministry of Agriculture and Forests, Bhutan.

Phuntsho Phuntsho, Department of Forests and Park Services, Ministry of Agriculture and Forests, P.O. Box. 1345, Thimphu 11001, Bhutan.

Department of Forests and Park Services, Ministry of Agriculture and Forests, Bhutan.

Ngawang Gyeltshen, Department of Forests and Park Services, Ministry of Agriculture and Forests, P.O. Box. 1345, Thimphu 11001, Bhutan.

Department of Forests and Park Services, Ministry of Agriculture and Forests, Bhutan.

Kelzang Dawa, Department of Forests and Park Services, Ministry of Agriculture and Forests, P.O. Box. 1345, Thimphu 11001, Bhutan.

Department of Forests and Park Services, Ministry of Agriculture and Forests, Bhutan.

Tandin Wangchuk, Department of Forests and Park Services, Ministry of Agriculture and Forests, P.O. Box. 1345, Thimphu 11001, Bhutan.

Department of Forests and Park Services, Ministry of Agriculture and Forests, Bhutan.

Rebecca Pradhan, Royal Society for Protection of Nature, P.O. Box. 325. Lhado Lam, Kawajangsa, Thimphu, Bhutan.

Royal Society for Protection of Nature, NGO Thimphu, Bhutan.

Thomas Axel Ivan Hoijer, Horticulturalist in Sweden and a researcher in the National Biodiversity Centre, Thimphu, Bhutan.

Thomas Axel Ivan Hoijer

Horticulturalist in Sweden and a researcher in the National Biodiversity Centre, Thimphu, Bhutan

Choki Gyeltshen, National Biodiversity Centre, Ministry of Agriculture and Forests, Serbithang, Thimphu, Bhutan.

National Biodiversity Centre, Ministry of Agriculture and Forests, Bhutan.

References

Chowdhery, H.J. (1998). Orchid Flora of Arunachal Pradesh. Bishen Singh Mahendra Pal Singh, Dehradun, India, 392pp.

Cribb, P.J. (1998). The Genus Paphiopedilum, 2nd Edition. Natural History Publications (Borneo), Kota Kinabalu & Royal Botanic Gardens, Kew, 427pp.

Dorji, S. (2008). The Field Guide to the Orchids of Bhutan. Bhutan Orchid Science Society. Thimphu, Bhutan, 58pp.

Dorji, T., I.O.A. Odeh, D.J. Field & I.C. Baillie (2014). Digital soil mapping of soil organic carbon stocks under different land use and land cover types in montane ecosystems, Eastern Himalayas. Forest Ecology and Management 318: 91–102.

Fowlie, J.A. (1970). Paphiopedilum spicerianum – Lady Spicer’s Slipper Orchid. Orchid Digest 34(2): 56–57.

Gansser, A. (1983). Geology of Bhutan Himalaya. Birkhäuser, Basel, Boston & Stuttgart, 181pp.

Govaerts, R., M.A. Campacci, D.H. Baptista, P.J. Cribb, A. George, K. Kreutz & J.J. Wood (2019). World Checklist of Orchidaceae. The Board of Trustees of the Royal Botanic Gardens, Kew. Available online at https://wcsp.science.kew.org/prepareChecklist.do?checklist=selected_families%40%40190090720191118292. Accessed on 20 April 2019.

Gurung, D.B. (2006). An Illustrated Guide to the Orchids of Bhutan. DSB Publication, Thimphu, Bhutan, 178pp.

Gurung, D.B., S. Dalström, T. Höijer, N. Gyeltshen, N. Gyeltshen & D. Wangdi (2016). Orchid Explorers on the Trail of Gaurs and Elephants. Orchids, American Orchid Society, USA, 526–533pp.

Hooker, J.D. (1894). The Flora of British India. L. Reeve & Co. Ltd., London, 794pp.

King, J. & R. Pantling (1898). The Orchids of the Sikkim-Himalayas: Annals of the Royal Botanic Gardens, Vol. III. Calcutta, 342pp.

Ohsawa, M., 2002. Structure and regeneration of mixed broad-leaved forest in the Bhutan Himalayas, pp41–56. In: Ohsawa, M. (ed.). Life Zone Ecology of the Bhutan Himalaya III. University of Tokyo, Chiba, Japan.

Pearce, N.R. & P.J. Cribb (2002). The Orchids of Bhutan. Royal Botanic Garden, Edinburgh and Royal Government of Bhutan, 643pp.

Pradhan, U.C. (1976). Indian Orchids: Guide to Identification & Culture 1. Kalimpong. Primulaceae Books, 188pp.

Pradhan, U.C. (1978). Notes on Indian Sarcanthinae - the genus Schoenorchis Bl. American Orchid Society Bulletin 47: 910–912.

Pradhan, M. (1996). Paphiopedilum farrieanum (Lindl.) Pfitz. in Sikkim. South African Orchid Journal 27(4): 109–112.

Rankou, H. & P. Kumar (2015a). Paphiopedilum fairrieanum. In: The IUCN Red List of Threatened Species: e.T43320321A43327829. Accessed on 01 December 2017. https://doi.org/10.2305/IUCN.UK.2015-2.RLTS.T43320321A43327829.en

Rankou, H. & P. Kumar (2015b). Paphiopedilum venustum. In: The IUCN Red List of Threatened Species: e.T15052375A15055154. Accessed on 01 December 2017. https://doi.org/10.2305/IUCN.UK.2015-2.RLTS.T15052375A15055154.en

Rankou, H. & S. Molur (2015). Paphiopedilum spicerianum. In: The IUCN Red List of Threatened Species: e.T15052359A15055149. Accessed on 01 December 2017. https://doi.org/10.2305/IUCN.UK.2015-2.RLTS.T15052359A15055149.en

Raskoti, B.B. & R. Ale (2011). Paphiopedilum fairrieanum (Lindl.) Stein and Paphiopedilum venustum (Wall. ex Sims) Pfitzer, new records of genus Paphiopedilum Pfitzer (Orchidaceae) for flora of Nepal. The McAllen International Orchid Society Journal 12(8): 7–11.

RGoB (2006). Forests and Nature Conservation Rules and Regulations 2006. Royal Government of Bhutan, Thimphu, Bhutan, 180pp.