Dienia

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Ordo: Asparagales

Familia: Orchidaceae
Subfamilia: Epidendroideae
Tribus: Malaxideae
Genus: Dienia
Overview of species (6)

D. carinata – D. cylindrostachya – D. ophrydis – D. shuicae – D. truncicola – D. volkensii
Source(s) of checklist:

Govaerts, R. et al. 2020. Dienia in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Jun 20. Reference page.

Name

Dienia Lindl., Bot. Reg. 10: t. 825 (1824)

Type species: Dienia ophrydis (J.Koenig) Seidenf., Contr. Orchid Fl. Thailand 13: 18 (1997)

Synonymy

Heterotypic
Gastroglottis Blume, Bijdr.: 397 (1825)
Pedilea Lindl., Orchid. Scelet.: 27 (1826)
Anaphora Gagnep., Bull. Mus. Natl. Hist. Nat., II, 4: 592 (1932)

Distribution
Native distribution areas:

Asia-Temperate
China
China South-Central, China Southeast, Hainan, Tibet.
Eastern Asia
Nansei-shoto, Taiwan.
Asia-Tropical
Indian Subcontinent
Assam, Bangladesh, East Himalaya, India, Nepal, Sri Lanka, West Himalaya.
Indo-China
Andaman Islands, Cambodia, Laos, Myanmar, Nicobar Islands, Thailand, Vietnam.
Malesia
Borneo, Jawa, Lesser Sunda Islands, Malaya, Maluku, Philippines, Sulawesi, Sumatera.
Papuasia
New Guinea.
Australasia
Australia
Queensland.
Pacific
Northwestern Pacific
Caroline Islands.
Southwestern Pacific
New Caledonia.

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Lindley, J. 1824. Botanical Register, 10: t. 825.
Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.N. (eds.) 2006. Genera Orchidacearum Volume 4 Epidendroideae (Part one); page 460 ff., Oxford: Oxford University Press. ISBN 0-19-850712-7. Reference page.

Additional references

Wu, Z. & Hong, D. (eds.) (2009) Flora of China 25: 1–570. Missouri Botanical Garden Press, St. Louis.

Links

'eFloras 2009. Dienia in Flora of China vol. 25 Orchidaceae --> pdf Dienia
Global Biodiversity Information Facility. 2022. GBIF Backbone Taxonomy. Checklist dataset. Taxon: Dienia. Accessed: 2022 Jan 17.
Govaerts, R. et al. 2022. Dienia in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2022 Jan 17. Reference page.
Govaerts, R. et al. 2022. Dienia in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2022 Jan 17. Reference page.
Hassler, M. 2022. Dienia. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2022. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2022 Jan 17. Reference page.
International Plant Names Index. 2022. Dienia. Published online. Accessed: 17 Jan 2022.
Tropicos.org 2022. Dienia. Missouri Botanical Garden. Published online. Accessed: 17 Jan 2022.

Vernacular names

English: Snout orchids

Dienia, commonly called snout orchids,[2] is a genus of six species of orchids in the family Orchidaceae. Plants in this genus are evergreen, mostly terrestrial plants with a fleshy, above ground stem, large, pleated leaves and small, non-resupinate flowers with thin sepals and petals. The labellum is short and tongue-like. The genus is distributed in Southeast Asia, Australia, Micronesia and Melanesia.

Description

Orchids in the genus Dienia are evergreen, sympodial, mostly terrestrial plants with fleshy, above-ground stems, although a few species are epiphytes. There are between three and six relatively large, thin, pleated leaves with their petioles wrapped around the stem. Small, non-resupinate flowers are borne along the end of the flowering stem. The flowers are green, brown, yellow, pink, or purple and have narrow sepals and petals. The sepals are oblong to egg-shaped and spread widely and the petals are usually narrower than the sepals. The labellum is relatively short with three lobes, the middle lobe tongue-like and the side lobes shorter and broad.[2][3][4][5]
Taxonomy and naming

The genus Dienia was first formally described in 1824 by John Lindley and the description was published in The Botanical Register.[6][7] The name Dienia is derived from the Ancient Greek word dienos meaning "two years", referring to the stems which last for two years.[4]
List of species

The following is a list of species of Dienia recognised by the World Checklist of Selected Plant Families as at October 2018:[1]

Dienia carinata Rchb.f.
Dienia cylindrostachya Lindl.
Dienia ophrydis (J.Koenig) Seidenf.
Dienia shuicae (S.S.Ying) T.P.Lin
Dienia truncicola (Schltr.) M.A.Clem. & D.L.Jones
Dienia volkensii (Schltr.) M.A.Clem. & D.L.Jones

Distribution

Dienia are found in the Philippines, Sumatra, China, the Indian subcontinent, East Asia, Malesia, New Guinea and Australia.[1][2]
References

"Dienia". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. pp. 354–356. ISBN 1877069124.
"Dienia". Flora of China. Retrieved 23 October 2018.
D.L.Jones; T.Hopley; S.M.Duffy (2010). "Dienia". Australian Tropical Rainforest Orchids. Centre for Australian National Biodiversity Research (CANBR), Australian Government. Retrieved 29 May 2021.
Margońska, Hanna B.; Kowalkowska, Agnieszka (2008). "Taxonomic revision of Dienia (Malaxidinae, Orchidaceae)" (PDF). Annales Botanici Fennici. 45: 97–104. Retrieved 23 October 2018.
"Dienia". APNI. Retrieved 22 October 2018.
Lindley, John (1824). The Botanical Register Volume 10. Piccadilly: James Ridgway. p. 825. Retrieved 23 October 2018.