Adelaide Hills banded greenhood

Pterostylis viriosa, commonly known as the Adelaide Hills banded greenhood, is a plant in the orchid family Orchidaceae and is endemic to South Australia. Flowering plants have up several green flowers with faint white stripes. The flowers have an insect-like labellum which is green with a dark green mound on its upper end. Non-flowering plants have a rosette of leaves on a stalk, but flowering plants lack the rosette, instead having several stem leaves.