Genoplesium ostrinum
| Purple midge orchid | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Monocots | 
| Order: | Asparagales | 
| Family: | Orchidaceae | 
| Subfamily: | Orchidoideae | 
| Tribe: | Diurideae | 
| Genus: | Genoplesium | 
| Species: | G. ostrinum  | 
| Binomial name | |
| Genoplesium ostrinum | |
| Synonyms | |
Genoplesium ostrinum, commonly known as the purple midge orchid, is a species of small terrestrial orchid that is endemic to New South Wales. It has a single thin leaf and up to ten dark purple flowers with darker stripes and a hairy labellum which vibrates in the slightest breeze.