| 词条 | Dendrobium tozerense |
| 释义 |
|name=White gemini orchid |image= LR040 72dpi Grastidium tozerense.jpg |image_caption=Illustration by Lewis Roberts |genus=Dendrobium |species=tozerense |authority=Lavarack[1] |synonyms_ref =[1] |synonyms=Grastidium tozerense (Lavarack) M.A.Clem. & D.L.Jones }} Dendrobium tozerense, commonly known as the white gemini orchid,[2] is an epiphytic or lithophytic orchid in the family Orchidaceae. It has thin, wiry stems, stiff leaves and pairs of star-shaped, white flowers. It grows in rainforest in tropical North Queensland, Australia. DescriptionDendrobium tozerense is an ephiphytic or lithophytic herb that has crowded wiry stems {{convert|200-600|mm|in|sigfig=1|abbr=on}} long and about {{convert|2|mm|in|sigfig=1|abbr=on}} wide. The leaves are scattered along the stems and are light green, linear to lance-shaped, {{convert|50-80|mm|in|sigfig=2|abbr=on}} long and {{convert|6-8|mm|in|sigfig=2|abbr=on}} wide. The flowers are white, arranged in pairs in leaf axils and are resupinate, star-shaped and {{convert|30-35|mm|in|sigfig=2|abbr=on}} long and wide. The dorsal sepal is {{convert|20-25|mm|in|sigfig=2|abbr=on}} long, about {{convert|6|mm|in|sigfig=1|abbr=on}} wide and the lateral sepals are {{convert|14-18|mm|in|sigfig=2|abbr=on}} long, about {{convert|5|mm|in|sigfig=2|abbr=on}} wide. The sepals and petals are {{convert|12-15|mm|in|sigfig=2|abbr=on}} long, about {{convert|2|mm|in|sigfig=1|abbr=on}} wide, thin and pointed. The labellum is {{convert|7-10|mm|in|sigfig=1|abbr=on}} long, about {{convert|4|mm|in|sigfig=1|abbr=on}} wide, has a few scattered hairs and three lobes. The side lobes are erect, rounded triangluar and the middle lobe has a blunt tip and crinkled edges. Flowering occurs sporadically throughout the year.[2][3]Taxonomy and namingDendrobium tozerense was first formally described in 1977 by Bill Lavarack from a specimen collected from Tozer's Gap on Cape York Peninsula and the description was published in the journal Austrobaileya.[1][4]Distribution and habitatThe white gemini orchid grows on trees and rocks in rainforest and on cliffs near waterfalls on some Torres Strait Islands and south on the Cape York Peninsula to the Iron Range and Tully.[2][3] References1. ^1 2 {{WCSP |58785 |Dendrobium pruinosum}} {{Taxonbar|from=Q15466326}}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 =399}} 3. ^1 {{cite web |title=Grastidium tozerense |url=http://keys.trin.org.au:8080/key-server/data/08090a09-0d0e-410b-860c-020705070e0e/media/Html/Grastidium_tozerense.htm|publisher=Trin keys: Australian Tropical Rainforest Orchids |accessdate=1 December 2018}} 4. ^{{cite journal |last1=Lavarack |first1=Peter S. |title=Notes on Queensland Orchidaceae |journal=Austrobaileya |date=1977 |volume=1 |issue=1 |pages=63–74}} 5 : Dendrobium|Orchids of Queensland|Orchids of New Guinea|Epiphytic orchids|Plants described in 1977 |
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