Thelymitra inflata (inflated sun-orchid) is a deciduous terrestrial orchid known in Tasmania from two locations near Hobart, with only two records, both made in the early 1990s, despite numerous surveys in potential habitat and a search of the Ridgeway site almost every year since it was discovered in 1992. While abundance data is scarce, it is likely that the species occupies less than 1 ha and consists of fewer than 250 individuals in total, putting the species at a high risk of local extinctions due to the small size of sites. The species grows in areas of slightly impeded drainage in open forest and woodland on clay-loam soils. Likely threats include inadvertent losses through vegetation clearance or land management changes, inappropriate fire regimes, and climate change.
