Australian Terrestrial Orchid ID - HELP?

G'day good people. Can anyone ID this Orchid please. Slides were taken September 1991 (hence the poor quality, sorry) Halls Road, Enfield State forest, South of Ballarat, Victoria, Australia.





http://360.yahoo.com/profile-7GHSdjoydKk...





Hope this link works folks, haven't tried this before. Thanks.

Australian Terrestrial Orchid ID - HELP?
Tricky.





Probably a species of Caladenia; see reference 1, perhaps C. concolor (reference 2)- but this species is very rare.





You should probably inquire here:





http://terrorchid.proboards27.com/index....





They would be much more helpful; my specialty is epiphytic species, and mainly South American at that.





Edited to add: It does look like A. caudatus; it has been moved to a new genus, and is known as Nemacianthus caudatus. Do an images.google.com search for the species, and the similarity is bang on. Looks like that's got it.
Reply:try
Reply:The name is correct. It is Acianthus caudatus.





It is also called May fly orchid ( not Mayflower)





Gnat orchid and mosquito orchid are other names.


It is an insect pollinated terrestrial orchid ( ground orchid) found in South East Australia.





The generic name Acianthus is due to very narrow and needle like pointed floral parts( anthus= flower/floral parts; acicular= very sharp and pointed like a needle).





The specific name caudatus is due to very long almost tail like spur at the lower side of the flower.





Remember in fish a caudal fin means tail fin .


and in higher animals like mammals the caudal vertebra is the vertebra located in its tail.
Reply:The link works --- wanted to let you know. I looked at the orchid, but don't know what variety it is.





(Sorry.)





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Reply:h