Notched Onion Orchid (Microtis arenaria)

Flowers in Spring/Summer (Oct - Dec), favours woodland, coastal heath and swampy grassland.

Poorly understood and understudied but apparently fairly widespread in Southern Victoria.  The photo ruler indicates the height of this particular plant - a total of 13 inches (33cm).

Because every flower tends to set seed, it was thought to be self pollinating.  Work has shown that, in fact, pollination occurs mostly by worker ants.  This is highly unusual because an antifungal secretion of ants usually kill pollen.


Purplish Beard Orchid (Calochilus robertsonii)

Flowers in Spring (Oct - Dec), favours woodland, open forest and heathland.

Widespread. The central part of the flower resembles a bearded face.  The photo ruler indicates the height of this particular plant - a total of 9.5 inches (24cm). 

Pollination has been studied very little but it is thought that the male wasp of the Scolidae family may be involved.  If all else fails, flowers will self-pollinate.


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