| Thelymitra caesia
is one of several striped amphidiploid hybrids (chromosomes add) of T. longifolia and striped blue T. cyanea, which usually get lumped as T. pulchella. T. caesia has unusual tawny fimbria on its column arms and occurs now at Albany Scenic Reserve and at Centennial Park, Campbells Bay. Up to five, 30mm wide flowers can open at once on this plant to 600mm tall but only on hot, humid days in October. It favours the low fertility weathered sandstone/siltstone of these sites in dappled sun. The tiny black Thrips is implicated in the cross pollination of the two so called “self pollinated” parents.
The blue colour is accurate, even in this anaglyph.
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