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 atrans, commonly known as the dark-tip greenhood or blunt-tongue greenhood, is a species of orchid endemic to south-eastern Australia. As with similar greenhoods, plants in flower differ from those that are not flowering. The non-flowering plants have a rosette of leaves flat on the ground, but the plants in flower have a single flower with leaves on the flowering spike. In this species, the flower is green and reddish brown with a protruding sinus and small club-like tips on the ends of the lateral sepals.
Pterostylis decurva, commonly known as the summer 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 but the flowering plants have a single flower with leaves on the flowering spike. This greenhood usually flowers in summer and has a white flower with green stripes and a brownish tinge. It is similar to P. aestiva but has paler green flowers.
Pterostylis foliata, commonly known as the slender greenhood, is a species of orchid widespread in south-eastern Australia and New Zealand. Flowering plants have a rosette of three to six, dark green, crinkled leaves crowded around the flowering stem and a single dark green and brown flower with a deep V-shaped sinus between the lateral sepals.
Pterostylis furcata, commonly known as the forked greenhood, is a species of orchid endemic to Tasmania. Flowering plants have a rosette of bright green leaves at the base of the flowering stem and a single green and white flower with the tip of the dorsal sepal pointing above the horizontal.
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 scabra, commonly known as the green-veined shell orchid, is a species of orchid endemic to the south-west of Western 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 white flower with green and pale brownish-fawn stripes and a long, curved protruding labellum. It is found in inland areas between Kalbarri and Esperance.
Pterostylis aneba is a species of orchid endemic to south-eastern Australia. It is a recently described and poorly-known greenhood similar to Pterostylis alpina and P. monticola. It has a rosette of fleshy leaves at the base of the plant and a single green and white flower. It grows in alpine and sub-alpine habitats.
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 falcata, commonly known as the sickle greenhood, is a species of orchid endemic to south-eastern Australia. It has a rosette of bright green leaves at the base of the plant and a single green and white, sickle-shaped flower. It is widespread and often common in Victoria but also occurs further north and west, and in Tasmania
Pterostylis aphylla, commonly known as the leafless greenhood, is a species of orchid endemic to Tasmania. 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 in this species, the flowering plants have a single green and white flower with a brown tip and lack leaves apart from a few small scales.
Pterostylis bryophila, commonly known as the Hindmarsh Valley greenhood, is a species of orchid endemic to South Australia. As with similar greenhoods, plants in flower differ from those that are not. In this species, plants not in flower have a rosette of leaves lying flat on the ground, but those in flower have a single small, shiny, bright green and white flower with a protruding, platform-like sinus between the lateral sepals.
Pterostylis depauperata, commonly known as the keeled greenhood, is a species of orchid endemic to Queensland. Flowering plants have a rosette of leaves at the base of a flowering stem with a single small white flower with pale green marks, and a few small stem leaves. Non-flowering plants only have a rosette of leaves. All three sepals on the flower have relatively long, thread-like tips.
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 hildae, commonly known as the rainforest greenhood, is a species of orchid found in eastern Australia. It has a rosette of leaves and when flowering a rosette at the base of a flowering stem with a single green, white and brown flower. It is found in wet forests, including rainforest in New South Wales and Queensland.
Pterostylis nigricans, commonly known as the dark greenhood, is a species of orchid endemic to 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 six tiny green, white and brown flowers which have a rough texture.
Pterostylis riparia, commonly known as the streamside greenhood, is a plant in the orchid family Orchidaceae and is endemic to New South Wales. Both flowering and non-flowering plants have a rosette of dark green, fleshy leaves. Flowering plants have a single, relatively large green, white and reddish-brown flower with a deeply notched sinus between hairy lateral sepals.
Pterostylis stricta, commonly known as the northern greenhood, is a species of orchid endemic to Queensland. It has a rosette of leaves and when flowering a single translucent white flower with green lines, a reddish-brown tip and a curved, protruding labellum.
Pterostylis torquata, commonly known as the collared greenhood, is a species of orchid endemic to New South Wales. 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 stem. This greenhood has a white flower with dark green and dark brown markings, although in some areas, the flowers lack the brown markings. The sinus between the lateral sepals is platform-like.
