an unspotted blue sun-orchid, occurs from Hatfields Beach south to Shag Point, Palmerston, in poor soils and dappled sun. Three to four 22mm wide flowers open only on hot days. It is a natural amphidiploid hybrid (chromosomes add) of T. longifolia and T. aff. ixioides, both long thought to be self pollinated. Tiny black Thrips have been photographed in some of these flowers, with grains of friable pollen adhering. Thrips fly between different sun-orchid species and enter closed flowers with ease, blundering into friable pollen and thus effecting enough cross pollination to keep the species and hybrids viable. A novice native bee has also been filmed trying to obtain nectar and pollen, without success, at Hatfields beach. It may have mistaken the flowers for a similar South African weed Iris in the vicinity. T. decora is a spotted blue from the same hybridisation.