Prasophyllum castaneum
| Chestnut leek orchid | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Orchidoideae |
| Tribe: | Diurideae |
| Subtribe: | Prasophyllinae |
| Genus: | Prasophyllum |
| Species: | P. castaneum |
| Binomial name | |
| Prasophyllum castaneum | |
Prasophyllum castaneum, commonly known as the chestnut leek orchid, is a species of orchid endemic to Tasmania. It has a single tubular, dark green leaf with a dark purplish base and between ten and twenty chestnut coloured to dark brown flowers. In 2000, the entire population was estimated to be about fifty plants.