| 词条 | Dendrobium epiphyticum |
| 释义 |
|name = Illawarra rock orchid |image = |image_caption = |genus = Dendrobium |species = epiphyticum |authority = (D.L.Jones & M.A.Clem.) J.M.H.Shaw[1] |synonyms_ref = [1] |synonyms= Thelychiton epiphyticus D.L.Jones & M.A.Clem. }} Dendrobium epiphyticum, commonly known as the Illawarra rock orchid,[2] is a species of epiphytic or lithophytic orchid that is endemic to New South Wales. It has tapered or cylindrical pseudobulbs, up to five thick, leathery leaves and up to fifty cream-coloured or pale yellow flowers with reddish purple markings on the labellum. DescriptionDendrobium epiphyticum is a epiphytic or lithophytic herb with spreading roots and cylindrical or tapering, green to yellowish pseudobulbs {{convert|50-150|mm|in|sigfig=1|abbr=on}} long and {{convert|25-40|mm|in|sigfig=1|abbr=on}} wide. Each pseudobulb has between three and five thick, leathery, dark green leaves originating from its top, the leaves {{convert|80-160|mm|in|sigfig=1|abbr=on}} long and {{convert|30-60|mm|in|sigfig=1|abbr=on}} wide. Between twenty and fifty cream-coloured or pale yellow flowers {{convert|30-40|mm|in|sigfig=2|abbr=on}} long and {{convert|40-50|mm|in|sigfig=2|abbr=on}} wide are arranged on a flowering stem {{convert|250-450|mm|in|sigfig=1|abbr=on}} long. The dorsal sepal is oblong, {{convert|25-35|mm|in|sigfig=2|abbr=on}} long and {{convert|4-5|mm|in|sigfig=2|abbr=on}} wide. The lateral sepals are {{convert|20-25|mm|in|sigfig=2|abbr=on}} long, about {{convert|5|mm|in|sigfig=2|abbr=on}} wide, strongly curved and spread widely apart from each other. The petals are linear to oblong, {{convert|22-30|mm|in|sigfig=2|abbr=on}} long, {{convert|3-4|mm|in|sigfig=1|abbr=on}} wide and curved. The labellum is cream-coloured with reddish purple markings, {{convert|11-15|mm|in|sigfig=1|abbr=on}} long and {{convert|11-13|mm|in|sigfig=1|abbr=on}} wide with three lobes. The sides lobes are erect and blunt and the middle lobe has a rounded tip. Flowering occurs between September and November.[2][3]Taxonomy and namingThe Illawarra rock orchid was first formally described in 2006 by David Jones and Mark Clements from a plant grown in the Australian National Botanic Gardens from a specimen collected on the Cambewarra Mountain. It was given the name Thelychiton epiphyticus and the description was published in Australian Orchid Research.[3][4] In 2014, Julian Shaw changed the name to Dendrobium epiphyticum.[5] The specific epithet (epiphyticum) is derived from the Ancient Greek words epi meaning "beside', "upon", "over" or "after",[6]{{rp|571}} and phyton meaning "plant"[6]{{rp|613}} referring to the epiphytic habit of this orchid.[3] Distribution and habitatDendrobium epiphyticum grows on trees in moist forest and rainforest, sometimes on clifs near waterfalls. It occurs in New South Wales between Robertson and Cambewarra.[2][3]References1. ^1 {{WCSP |490175 |Dendrobium epiphyticum}} 2. ^1 2 {{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=410–411}} 3. ^1 2 3 {{cite journal |last1=Jones |first1=David L. |last2=Clements |first2=Mark A. |last3=Sharma |first3=Ish |title=Towards a revision of the Thelychiton speciosus group |journal=Australian Orchid Research |date=2006 |volume=5 |issue=2 |page=39}} 4. ^{{cite web|title=Thelychiton epiphyticus|url= https://id.biodiversity.org.au/instance/apni/615811|publisher=APNI|accessdate=4 December 2018}} 5. ^{{cite web|title=Dendrobium epiphyticum|url= https://id.biodiversity.org.au/instance/apni/6454260|publisher=APNI|accessdate=4 December 2018}} 6. ^1 {{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.}} 4 : Dendrobium|Endemic orchids of Australia|Orchids of New South Wales|Plants described in 2006 |
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