Pterostylis aff montana (Greenhood)

Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Subtribe: Pterostylidinae
Genus: Pterostylis
Species: Pterostylis aff montana
Common name: Greenhood

Pterostylis aff montana is a terrestrial tuberous herb. Plants grow up to 30cm high. It usually has 4 – 6 grass-like leaves, up to 15cm in length.
The flower is a single 2 - 3cm high and is green with translucent white stripes, sometimes with red in the dorsal and lateral sepals. Flower structures vary depending on the species. Labellum either twisted at the tip or straight. Dorsal & lateral sepals either short or long depending on the species. Ends of the lateral sepals are usually tubular.
Information courtesy of     

Photographed at Te Kainga Marire Gardens, New Plymouth, Taranaki

In the Pterostylis montana aggregate-005.jpg In the Pterostylis montana aggregate-004.JPG

In the Pterostylis montana aggregate-003.JPG

Young plant
Pterostylis aff. montana.JPG 

Thanks to Wikipedia for text and information: