Grampians Spider Orchid (Arachnorchis grampiana - previously Caladenia sp aff patersonii 2)

Flowers in Spring (Sep - Oct) - gravelly soil in heathy woodland.

The orchid is found only in the Grampians and has been poorly studied.  This series of photos was taken after the 2006 wildfires which made discovery easier and showed the wide variety of colour forms.  The photo ruler indicates the height of this particular plant - a total of 8.5 inches (22cm). 

Pollination of the Arachnorchis species has been studied very little but it is thought that spider orchids are generally pollinated by pseudocopulation (male thynnid wasp).


Flat Rustyhood (Oligochaetochilus planulatus - formerly Pterostylis planulata)

Flowers in Spring (Sep - Nov), favours malee, dry woodland frequently found in rocky areas.

The photo ruler indicates the height of this particular plant - a total of 4 inches (10cm).  This plant has a variety of colour shades and sizes.  The labellum is very sensitive and retracts when disturbed.  The leaves dry up and have almost disappeared by the time of flowering.

All known pollinators of the Genus Oligochaetochilus have been male insects of the fungus gnat and mosquito family.


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