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Range of Thelymitra ixioides
Range of Thelymitra ixioides.

Spotted Sun Orchid
Thelymitra ixioides Sw. 1805

Synonyms

Notes

The Spotted Sun Orchid (also known as the Dotted Sun Orchid) is one of the most common and widespread Sun Orchids of Australia and named after the numerous dark spots that usually cover the flowers. Some specimens lack the characteristic spots and are just plain blue, making their identification more difficult. However, the Spotted Sun Orchid can be readily distinguished from similar species of Sun Orchid by the characteristic shape of the column.

The Spotted Sun Orchid grows in forests, woodland and heath, usually flowering in late winter and early spring. The species is found from south-eastern SA across southern and eastern VIC, the ACT and eastern NSW into far south-eastern QLD. It also occurs in parts of TAS and New Zealand. In Australia, Spotted Sun Orchids are pollinated by native bees of the genus Lasioglossum and Exoneura (Sydes & Calder 1993).

Photos

Thelymitra ixioides
The Spotted Sun Orchid owes its name to the numerous dark spots that normally cover the flowers. (Lane Cove NP, NSW, 05 / 09 / 2009)
Thelymitra ixioides
Size and density of the dark spots are highly variable. (Lane Cove NP, NSW, 11 / 09 / 2010)
Thelymitra ixioides
View of the characteristic column. (Lane Cove NP, NSW, 11 / 09 / 2010)
Thelymitra ixioides
Some specimens lack the characteristic dark spots and have plain blue flowers instead. (Lane Cove NP, NSW, 05 / 09 / 2009)
Thelymitra ixioides
This flower is getting a visit from a potential pollinator. (Lane Cove NP, NSW, 11 / 09 / 2010)
Thelymitra ixioides
Spotted Sun Orchids are pollinated by bees of the genus Lasioglossum and Exoneura. (Lane Cove NP, NSW, 11 / 09 / 2010)
Thelymitra ixioides
View of the whole plant in its typical forest habitat. (Lane Cove NP, NSW, 30 / 08 / 2009)

References