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词条 Octarrhena pusilla
释义

  1. Description

  2. Taxonomy and naming

  3. Distribution and habitat

  4. References

{{Italic title}}{{Taxobox
| name = Wispy grub orchid
| status_system =
| status =
| image =
| image_caption =
| regnum = Plantae
| unranked_divisio = Angiosperms
| unranked_classis = Monocots
| ordo = Asparagales
| familia = Orchidaceae
| subfamilia = Epidendroideae
| genus = Octarrhena
| species = O. pusilla
| binomial = Octarrhena pusilla
| binomial_authority = (F.M.Bailey) D.L.Jones & M.A.Clem.[1]
| synonyms_ref =[1]
| synonyms =
  • Oberonia pusilla F.M.Bailey
  • Phreatia pusilla (F.M.Bailey) Rolfe nom. illeg.
  • Phreatia baileyana Schltr.

}}

Octarrhena pusilla, commonly known as the wispy grub orchid,[2] is an epiphytic or lithophytic plant in the orchid family. It has thin roots, usually only a single stem, between three and six fleshy, cylindrical leaves and up to twenty small, white to cream-coloured flowers. This orchid is endemic to tropical North Queensland.

Description

Octarrhena pusilla is an epiphytic or lithophytic herb usually with a single stem with thin roots. The shoot has between three and six fleshy, cylindrical, green to yellowish green leaves {{convert|15-30|mm|in|sigfig=2|abbr=on}} long and {{convert|2-2.5|mm|in|sigfig=2|abbr=on}} wide with their bases overlapping. Between five and twenty white to cream-coloured, non-resupinate flowers about {{convert|1.5|mm|in|sigfig=2|abbr=on}} long and wide are borne on a thread-like flowering stem {{convert|20-30|mm|in|sigfig=2|abbr=on}} long. The sepals and petals are egg-shaped, spread widely apart from each other, the sepals about {{convert|0.8|mm|in|sigfig=2|abbr=on}} long, the petals much smaller than the sepals. The labellum is about {{convert|0.5|mm|in|sigfig=2|abbr=on}} long and wide with obscure lobes. Flowering occurs between September and November.[2][3]

Taxonomy and naming

The wispy grub orchid was first formally described in 1889 by Frederick Manson Bailey who gave it the name Oberonia pusilla and published the description in Report of the government scientific expedition to Bellenden-Ker Range: upon the flora and fauna of that part of the Colony.[4][5] In 1992 Mark Clements and David Jones changed the name to Octarrhena pusilla.[6] The specific epithet (pusilla) is a Latin word meaning "very small", "little" or "petty".[7]

Distribution and habitat

The wispy grub orchid grows on mossy trees and rocks in rainforest between the Cedar Bay and Paluma Range National Parks in Queensland.[2][3]

References

1. ^{{WCSP |137216 |Octarrhena pusilla}}
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 =471–472}}
3. ^{{cite web |title=Octarrhena pusilla |url=http://keys.trin.org.au:8080/key-server/data/08090a09-0d0e-410b-860c-020705070e0e/media/Html/Octarrhena_pusilla.htm |publisher=Trin keys: Australian Tropical Rainforest Orchids |accessdate=16 January 2019}}
4. ^{{cite web|title=Oberonia pusilla|url= https://id.biodiversity.org.au/instance/apni/503035|publisher=APNI|accessdate=16 January 2019}}
5. ^{{cite web |last1=Bailey |first1=Frederick M. |title=Report of the government scientific expedition to Bellenden-Ker Range: upon the flora and fauna of that part of the Colony |url=http://digital.slv.vic.gov.au/view/action/singleViewer.do?dvs=1547633552518~68&locale=en_AU&metadata_object_ratio=10&show_metadata=true&VIEWER_URL=/view/action/singleViewer.do?&preferred_usage_type=VIEW_MAIN&DELIVERY_RULE_ID=10&frameId=1&usePid1=true&usePid2=true |publisher=State Library of Victoria |accessdate=16 January 2019}}
6. ^{{cite web|title=Octarrhena pusilla|url= https://id.biodiversity.org.au/instance/apni/587672|publisher=APNI|accessdate=16 January 2019}}
7. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page =644}}
{{Taxonbar|from=Q15476910}}

4 : Octarrhena|Endemic orchids of Australia|Plants described in 1889|Orchids of Queensland

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