| 词条 | Dendrobium mortii |
| 释义 |
|name = Slender pencil orchid |image = |image_caption = |genus = Dendrobium |species = mortii |authority= F.Muell.[1] |synonyms_ref =[1] |synonyms =
}} Dendrobium mortii, commonly known as the slender pencil orchid,[2] is a species of orchid that is endemic to eastern Australia. It is an epiphyte with hanging stems and leaves and flowering stems with up to three pale green to dark green flowers. The flowers have a white labellum with purple markings. It usually grows near the tops of rainforest trees that are often shrouded in mist. DescriptionDendrobium mortii is an epiphytic herb with pendulous stems {{convert|1|mm|in|sigfig=1|abbr=on}} thick and up to {{convert|0.7|m|ft|sigfig=1|abbr=on}} long. The leaves are cylindrical, fleshy and dark green, {{convert|40-100|mm|in|sigfig=1|abbr=on}} long, {{convert|2-4|mm|in|sigfig=1|abbr=on}} in diameter with a longitudinal groove. Up to three pale green to dark green flowers {{convert|12-14|mm|in|sigfig=2|abbr=on}} long and {{convert|17-20|mm|in|sigfig=2|abbr=on}} wide are arranged on a flowering stem about {{convert|10|mm|in|sigfig=2|abbr=on}} long. The sepals are {{convert|12-15|mm|in|sigfig=1|abbr=on}} long and {{convert|2.5-3.5|mm|in|sigfig=2|abbr=on}} wide and the petals are {{convert|10-13|mm|in|sigfig=1|abbr=on}} long and about {{convert|1|mm|in|sigfig=1|abbr=on}} wide. The labellum is white with purple markings, {{convert|14-17|mm|in|sigfig=1|abbr=on}} long, {{convert|5-6|mm|in|sigfig=2|abbr=on}} wide and has three lobes. The side lobes are upright and the middle lobe curves downwards and has crinkly edges. Flowering occurs from September to November.[2][3]Taxonomy and namingDendrobium mortii was first formally described in 1859 by Ferdinand von Mueller and the description was published Fragmenta phytographiae Australiae from a specimen collected near the Hastings River by Hermann Beckler.[4]Distribution and habitatThe slender pencil orchid grows on the upper branches of rainforest trees, especially on ridge tops that are exposed to breezes and mists. It occurs between the McPherson Range in Queensland and Barrington Tops in New South Wales.[2][3] References1. ^1 {{WCSP |58449 |Dendrobium mortii}} {{Taxonbar|from=Q15458911}}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|page =391}} 3. ^1 {{cite web |last1=Weston |first1=Peter H. |title=Dendrobium mortii |url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Dendrobium~mortii|publisher=Royal Botanic Garden Sydney |accessdate=28 November 2018}} 4. ^{{cite web|title=Dendrobium mortii|url= https://id.biodiversity.org.au/instance/apni/505242|publisher=APNI|accessdate=28 November 2018}} 6 : Dendrobium|Endemic orchids of Australia|Orchids of New South Wales|Orchids of Queensland|Endemic orchids of Australia|Plants described in 1859 |
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