Pterostylis recurva commonly known as the jug orchid, recurved shell orchid, antelope orchid or bull orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It is a relatively common orchid which has up to four jug-shaped or funnel-shaped white flowers with green and brown lines and markings. Non-flowering plants have a rosette of leaves on a short stalk.
Pterostylis anaclasta is a species of flowering plant in the orchid family Orchidaceae and is endemic to a restricted part of Queensland. It has a rosette of about 6 sessile leaves and about 4 transparent white flowers with bright reddish lines and markings, a reddish brown labellum with white hairs, and lateral sepals strongly turned backwards.
Pterostylis aspera, commonly known as the rough shell orchid, is a species of orchid endemic to the south-west of Western 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. In this common species, the flower is white with green and reddish-brown stripes and a short, straight labellum.
Pterostylis chaetophora, commonly known as the Taree rustyhood, tall rusthood or ruddy hood is a plant in the orchid family Orchidaceae and is endemic to eastern Australia. It has a rosette of leaves at its base and up to twelve reddish-brown flowers with translucent "windows" and a fleshy, reddish-brown, bristly, insect-like labellum.
Pterostylis dilatata, commonly known as the robust snail orchid, is a species of orchid which is endemic to the south-west of Western Australia. Non-flowering plants have a rosette of leaves but flowering plants lack a rosette and have a single green and white flower on a flowering stem with stem leaves. The flowers appear in winter and have lateral sepals which almost close off the front of the flower.
Pterostylis frenchii, commonly known as the tuart rufous greenhood, or tuart rustyhood is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. Both flowering and non-flowering plants have a relatively large rosette of leaves. Flowering plants also have up to twelve white and green or white and brown flowers which lean forward and have a small, fleshy, insect-like labellum.
Pterostylis ferruginea, commonly known as the Bangham rustyhood, is a plant in the orchid family Orchidaceae and is endemic to the border area between South Australia and Victoria. It has a rosette of leaves and when flowering, up to ten upright, dark green and translucent white flowers which have an insect-like labellum.
Pterostylis lepida, commonly known as the Halbury greenhood is a plant in the orchid family Orchidaceae and is endemic to South Australia. Both flowering and non-flowering plants have a rosette of leaves. Flowering plants have up to ten green flowers with brown and translucent striations and a small, insect-like labellum. It is only known from two small populations.
Pterostylis leptochila, commonly known as the Ravensthorpe rufous greenhood or narrow-lipped rustyhood is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. Both flowering and non-flowering plants have a relatively large rosette of leaves. Flowering plants also have up to five large translucent white flowers with olive green and brown lines and markings and a narrow, insect-like labellum.
Pterostylis macrocalymma, commonly known as the large-hooded rufous greenhood or Murchison rustyhood is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. Both flowering and non-flowering plants have a relatively large rosette of leaves. Flowering plants also have up to ten or more white flowers with bold green or pale brown lines and a broad spoon-shaped, insect-like labellum.
Pterostylis macrosceles, commonly known as the slender rufous greenhood is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. Both flowering and non-flowering plants have a relatively large rosette of leaves. Flowering plants also have between four and eight white flowers with green brown lines and small, insect-like labellum. It is distinguished from other Western Australian greenhoods by the unusually long thread-like tips on its sepals.
Pterostylis microphylla, commonly known as the small rosette snail orchid, is a species of orchid endemic to the south-west of Western 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. In this species, the flower is white and green with narrow, erect lateral sepals and a small labellum.
Pterostylis parva, commonly known as the fawn snail orchid, is a species of orchid endemic to the south-west of Western Australia. As with similar greenhoods, the flowering plants differ from those which are not flowering. The non-flowering plants have a small rosette of leaves flat on the ground but the flowering plants have a single flower with leaves on the flowering spike. In this species, the flower is small, fawn, green and white and is similar to P. timothyi but smaller in stature.
Pterostylis roensis, commonly known as the painted rufous greenhood or dark rustyhood is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. Both flowering and non-flowering plants have a relatively large rosette of leaves. Flowering plants also have up to six green or brown to blackish flowers with translucent white panels and a dark brown, fleshy, insect-like labellum.
Pterostylis elegantissima, commonly known as the elegant rufous greenhood, is a species of orchid endemic to the south-west of Western Australia. Both flowering and non-flowering plants have a large rosette of leaves flat on the ground and flowering plants have up to eight green, white and black or brown flowers.
Pterostylis erubescens, commonly known as the red sepaled snail orchid, is a species of orchid endemic to the south-west of Western Australia. Non-flowering plants have a rosette of leaves flat on the ground but flowering plants lack a rosette and have a single large green flower which turns reddish-brown as it ages, and has leaves on the flowering spike.
Pterostylis exserta, commonly known as the exserted rufous greenhood, is a species of orchid endemic to the south-west of Western Australia. Both flowering and non-flowering plants have a large rosette of leaves flat on the ground and flowering plants have up to seven pale, transparent green and white flowers with brownish lines.
Pterostylis glebosa, commonly known as the clubbed snail orchid, is a species of orchid endemic to the south-west of Western Australia. Non-flowering plants have a rosette of leaves flat on the ground but flowering plants usually lack a rosette and have a single green and white flower with club-like lateral sepals. It sometimes forms colonies of thousands of plants.
Pterostylis lortensis, commonly known as the Lort River snail orchid, is a species of orchid endemic to the south-west of Western Australia. Non-flowering plants have a rosette of leaves flat on the ground but flowering plants usually lack a rosette and have a flowering stem with leaves and a single pale green and white flower with narrow, club-like lateral sepals.
Pterostylis atrosanguinea, commonly known as the crowded banded greenhood, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. The plants either have a rosette of leaves in the years when not flowering or stem leaves on a flowering spike. When flowering, it has up to twenty flowers that are dark reddish to blackish brown with translucent white areas. The labellum is dark reddish black and covered with short, stiff hairs.
