Pterostylis nutans, commonly known as the nodding greenhood or the parrot's beak orchid, is a species of orchid endemic to eastern Australia. Nodding greenhoods have flowers which "nod" or lean forwards strongly, have a deeply notched sinus and a curved, hairy labellum.
Pterostylis curta, commonly known as the blunt greenhood, is a species of orchid found in south-eastern Australia, Lord Howe Island and New Caledonia. It has a rosette of leaves at its base and a single white and green, forward leaning flower with a brown tip and a twisted labellum.
Pterostylis grandiflora, commonly known as the cobra greenhood or superb greenhood, is a species of orchid endemic to south-eastern Australia. As with similar orchids, the flowering plants differ from those which are not flowering. The non-flowering plants have a rosette of leaves but the flowering plants lack a rosette and have a single flower with leaves on the flowering spike. This greenhood has a green and white, striped flower with deep red-brown markings especially on its "galea", and a sharply pointed dorsal sepal.
Pterostylis obtusa, commonly known as the blunt-tongue greenhood, is a species of orchid endemic to New South Wales. It is distinguished from similar greenhood orchids by its thick, flat, platform-like sinus and blunt labellum which is only just visible above the sinus.
Pterostylis longifolia, commonly known as the common leafy greenhood or tall greenhood, is a plant in the orchid family Orchidaceae and is endemic to eastern Australia. Flowering plants have up to seven flowers which are green, partly transparent and which have a labellum which is pale green and hairy with a blackish central stripe. Non-flowering plants have a rosette of leaves but flowering plants lack the rosette, instead having five to eight stem leaves. A similar species, Pterostylis melagramma has paler green flowers which have a less hairy labellum.
Pterostylis acuminata, commonly known as the sharp greenhood or pointed greenhood is a species of orchid endemic to eastern Australia. It has a rosette of leaves and a single green and white flower, leaning forward with a brown point on the end of the labellum.
Pterostylis concinna, commonly known as the trim greenhood, is a species of orchid endemic to south-eastern Australia and which usually grows in colonies. It has a rosette of leaves at the base and a single dark green, white and orange-red flower.
Pterostylis cucullata, commonly known as the leafy greenhood, is a plant in the orchid family Orchidaceae and is endemic to south-eastern Australia. It has a rosette of fleshy leaves at its base and a single white, green and reddish-brown flower.
Pterostylis mutica, commonly known as the midget greenhood, is a plant in the orchid family Orchidaceae and is endemic to Australia, occurring in all states but not the Northern Territory. There is a rosette of leaves at the base of the flowering stem and up to fifteen pale green flowers which have a sensitive labellum.
Pterostylis nana, commonly known as the dwarf snail orchid, is a species of orchid endemic to Australia. It has a rosette of leaves at it base and a single narrow, bright green and white flower with a small labellum. There is uncertainty about its classification - some sources include South Australia and Western Australia in its range.
Pterostylis parviflora, commonly known as the tiny greenhood, is a species of orchid endemic to south-eastern Australia. As with similar orchids, the flowering plants differ from those which are not flowering. The non-flowering plants have a rosette of leaves but the flowering plants lack a rosette at the base but have up to eight tiny green, white and brown flowers.
Pterostylis pedunculata, commonly known as the upright maroonhood, is a species of orchid endemic to south-eastern Australia. Flowering plants have a rosette of two to six stalked leaves and a single green flower which is white near its base and tinged with reddish brown to black and with a gap between the petals and lateral sepals. It is common and widespread in a range of habitats.
Pterostylis revoluta, commonly known as the autumn greenhood, is a species of orchid endemic to south-eastern Australia. As with similar greenhoods, the flowering plants differ from those which are not flowering. The non-flowering plants have a rosette of leaves flat on the ground but the flowering plants have a single flower with leaves on the flowering spike. This greenhood has white and green flowers which have a long, curved, pointed labellum which extends beyond the sinus between the lateral sepals.
Pterostylis squamata, commonly known as the southern rustyhood or ruddyhood, is a plant in the orchid family Orchidaceae and is endemic to south-eastern Australia. Flowering plants have up to ten translucent green flowers with reddish-brown markings and a hairy, insect-like labellum. Non-flowering plants have a rosette of four to eight egg-shaped leaves. This species is very similar to Pterostylis rufa which has a narrower labellum and other minor differences.
Pterostylis alata, commonly known as the striped greenhood, is a species of orchid endemic to Tasmania. As with similar orchids, the flowering plants differ from those which are not flowering. The non-flowering plants have a rosette of leaves but the flowering plants have a single flower with leaves on the flowering spike. This greenhood has a white flower with prominent dark green stripes and a sharply pointed, brown-tipped dorsal sepal. Similar greenhoods growing on the Australian mainland were formerly known as Pterostylis alata but are now given the name Pterostylis striata.
Pterostylis dubia, commonly known as the blue-tongued greenhood, is a plant in the orchid family Orchidaceae and is endemic to Tasmania. It has a rosette of fleshy leaves at its base and a dark green and white flower with narrow petals and a dark blue-green labellum.
Pterostylis gibbosa, commonly known as the Illawarra rustyhood, or Illawarra greenhood, is a plant in the orchid family Orchidaceae and is endemic to New South Wales. It has a rosette of leaves at its base and up to nine bright green flowers with translucent "windows", relatively wide lateral sepals with short-pointed tips and a dark, fleshy, insect-like labellum.
Pterostylis micromega, commonly known as the swamp greenhood, is a species of greenhood orchid endemic to New Zealand. Both flowering and non-flowering plants have a rosette of leaves while flowering plants also have a single, relatively large whitish flower with a pointed dorsal sepal. The flower colour and pointed dorsal sepal are unique in New Zealand Pterostylis.
Pterostylis ophioglossa, commonly known as the snake-tongue greenhood, is a species of orchid endemic to eastern Australia. It has a rosette of leaves at the base and a single dull green, white and brown flower with a deeply notched labellum.
Pterostylis rufa, commonly known as the red rustyhood is a plant in the orchid family Orchidaceae and is endemic to south-eastern Australia. It has a rosette of leaves and up to fifteen bright reddish-brown flowers with translucent white "windows" and a dark brown, insect-like labellum. It occurs from southern Queensland to south-eastern South Australia.
