| 词条 | Dendrobium callitrophilum |
| 释义 |
|name=Thin feather orchid |image=LR021 72dpi Dendrobium callitrophilum.jpg |image_caption=Illustration by Lewis Roberts |status_system=EPBC |status=VU |genus=Dendrobium |species=callitrophilum |authority=B.Gray & D.L.Jones[1] |synonyms_ref =[1] |synonyms=* Dendrobium aemulum var. callitrophilum (B.Gray & D.L.Jones) {{ill|Alick William Dockrill|es|lt=Dockrill}}
}} Dendrobium callitrophilum, commonly known as the thin feather orchid,[2] is an epiphytic orchid in the family Orchidaceae with narrow pseudobulbs, one or two thin, leathery leaves and up to six greenish yellow flowers with a cream-coloured or apricot-coloured labellum. It grows in or near rainforest in isolated parts of tropical North Queensland. DescriptionDendrobium callitrophilum is an ephiphytic herb with pseudobulbs {{convert|50-300|mm|in|sigfig=1|abbr=on}} long and {{convert|1-3|mm|in|sigfig=1|abbr=on}} wide. There are one or two thin, leathery leaves {{convert|20-65|mm|in|sigfig=1|abbr=on}} long and {{convert|10-40|mm|in|sigfig=1|abbr=on}} wide. One or two flowering stems {{convert|8-25|mm|in|sigfig=1|abbr=on}} long bear up to six greenish yellow resupinate flowers that become apricot-coloured as they age. The sepals spread widely apart from each other, the dorsal sepal {{convert|12-14|mm|in|sigfig=1|abbr=on}} long, about {{convert|3|mm|in|sigfig=1|abbr=on}} wide and the laterals {{convert|11-13|mm|in|sigfig=1|abbr=on}} long and about {{convert|4|mm|in|sigfig=1|abbr=on}} wide. The petals are a similar length to the lateral sepals but only about {{convert|1.5|mm|in|sigfig=1|abbr=on}} wide. The labellum is {{convert|5-6|mm|in|sigfig=2|abbr=on}} long, {{convert|6-7|mm|in|sigfig=2|abbr=on}} wide and cream-coloured at first, becoming apricot-coloured with purplish stripes as it ages. The side lobes of the labellum are erect and pointed and the middle lobe turns downwards with three ridges, the central ridge larger and wavy. Flowering occurs from August to September.[2][3][4]Taxonomy and namingDendrobium callitrophilum was first formally described in 1989 by Bruce Gray and David Jones from a specimen collected near Nitchigar Creek, near Tully Falls. The description was published in the Proceedings of the Royal Society of Queensland.[5] The specific epithet (callitrophilum) is derived from name of the genus Callitris in the cypress family and the Ancient Greek word philia meaning "affection".[6]Distribution and habitatThe thin feather orchid grows on trees and shrubs, favouring Callitris macleayana and Austromyrtus species. It grows at altitudes of between {{convert|760 and 1500|m|ft|sigfig=1|abbr=on}} in or near to rainforest in tropical north Queensland.[2][3][4] ConservationThis orchid is listed as "vulnerable" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999. Although some populations of the species are conserved in national parks, it is threatened by land clearing, changed fire regimes and illegal collecting.[4] References1. ^1 {{WCSP | 57300 | Dendrobium callitrophilum}} {{Taxonbar|from=Q21161200}}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 =415–416}} 3. ^1 {{cite web |title=Tropilis callitrophilis |url=http://keys.trin.org.au:8080/key-server/data/08090a09-0d0e-410b-860c-020705070e0e/media/Html/Tropilis_callitrophilis.htm|publisher=Trin keys: Australian Tropical Rainforest Orchids |accessdate=18 November 2018}} 4. ^1 2 {{cite web |title=Approved Conservation Advice for Dendrobium callitrophilum |url=http://www.environment.gov.au/biodiversity/threatened/species/pubs/56050-conservation-advice.pdf |publisher=Australian Government Department of the Environment |accessdate=18 November 2018}} 5. ^{{cite web|title=Dendrobium callitrophilum|url= https://id.biodiversity.org.au/instance/apni/557082|accessdate=18 November 2018}} 6. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.page=498}} 3 : Dendrobium|Orchids of Queensland|Plants described in 1873 |
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