Swamp Diuris (Diuris palustris)

Flowers in late Winter/Spring (Jul - Nov), found in damp depressions within forest, woodland and grassland.

It is sporadic and uncommon but, in Victoria, confined to the western part.  The photo ruler indicates the height of this particular plant - a total of 5 inches (13cm).  Petals usually re-curved and leaves are in an erect tuft.

Pollination is mainly by small bees but syrphiid flies and beetles may also be pollinators.


Yellow-lip Spider Orchid (Arachnorchis xanthochila - previously Caladenia xanthochila)

Flowers in Spring (Aug - Sep) - Prefers well drained sandy-loam soil in grassy woodlands.

Highly endangered because it is found in limited sites with few plants.  The photo ruler indicates the height of this particular plant - a total of 10.5 inches (27cm).  There is an ongoing re-introduction program to ensure its survival.

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).


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