{{Short description|Species of orchid}} {{Automatic taxobox |name = Snout orchids |image = Crepidium ophridis.jpeg |image_caption = ''Dienia ophridis'', the common snout orchid |display_parents = 3 |taxon = Dienia |authority = (J.Koenig) Seidenf.<ref name="POWO">{{cite web |title=''Dienia'' |url=https://powo.science.kew.org/results?f=accepted_names&q=Dienia |publisher=Plants of the World Online |access-date=1 June 2023}}</ref> |synonyms = }}
'''''Dienia''''', commonly called '''snout orchids''',<ref name="Jones">{{cite book|last1=Jones|first1=David L.|title=A complete guide to native orchids of Australia including the island territories|date=2006|publisher=New Holland|location=Frenchs Forest, N.S.W.|isbn=1877069124|pages =354–356}}</ref> 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.<ref name="Jones" /><ref name="China">{{cite web |title=''Dienia'' |url=http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=110136 |publisher=Flora of China |accessdate=23 October 2018}}</ref><ref name="ATROK">{{cite web |author1=D.L.Jones |author2=T.Hopley |author3=S.M.Duffy |author1-link=David L. Jones (botanist) |year=2010 |access-date=29 May 2021 |url=http://www.canbr.gov.au/cpbr/cd-keys/RFKOrchids/key/rfkorchids/Media/Html/genera/Dienia.htm |title=''Dienia'' |website=Australian Tropical Rainforest Orchids |publisher=Centre for Australian National Biodiversity Research (CANBR), Australian Government}}</ref><ref name="ABF">{{cite journal |last1=Margońska |first1=Hanna B. |last2=Kowalkowska |first2=Agnieszka |title=Taxonomic revision of ''Dienia'' (Malaxidinae, Orchidaceae) |journal=Annales Botanici Fennici |date=2008 |volume=45 |issue=2 |pages=97–104 |doi=10.5735/085.045.0202 |s2cid=84486437 |url=http://www.annbot.net/PDF/anbf45/anbf45-097.pdf |accessdate=23 October 2018}}</ref>
==Taxonomy and naming== The genus ''Dienia'' was first formally described in 1824 by John Lindley and the description was published in ''The Botanical Register''.<ref name=APNI>{{cite web|title=''Dienia''|url=https://id.biodiversity.org.au/instance/apni/581337|publisher=APNI|accessdate=22 October 2018}}</ref><ref name="Lindl.">{{cite book |last1=Lindley |first1=John |title=The Botanical Register Volume 10 |date=1824 |publisher=James Ridgway |location=Piccadilly |page=825 |url=https://www.biodiversitylibrary.org/page/132286#page/131/mode/1up |accessdate=23 October 2018}}</ref> The name ''Dienia'' is derived from the Ancient Greek word ''dienos'' meaning "two years", referring to the stems which last for two years.<ref name="ATROK" />
==List of species== The following is a list of species of ''Dienia'' recognised by the ''Plants of the World Online'' as at 1 June 2023:<ref name="POWO" /> * ''Dienia carinata'' <small>Rchb.f.</small> * ''Dienia cylindrostachya'' <small>Lindl.</small> * ''Dienia ophrydis'' <small>(J.Koenig) Seidenf.</small> * ''Dienia shuicae'' <small>(S.S.Ying) T.P.Lin</small> * ''Dienia truncicola'' <small>(Schltr.) M.A.Clem. & D.L.Jones</small>
==Distribution== ''Dienia'' are found in the Philippines, Sumatra, China, the Indian subcontinent, East Asia, Malesia, New Guinea and Australia.<ref name="POWO" /><ref name="Jones" />
==References== {{Commons}}
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Category:Dienia Category:Malaxideae genera Category:Terrestrial orchids Category:Orchids of Asia Category:Orchids of Oceania