Cyrtostylis huegelii, commonly known as the western common gnat orchid or midge orchid, is a species of orchid endemic to Western Australia. It usually has a single rounded leaf and a flowering spike with up to fifteen pale green and dull red flowers with a purplish, shelf-like labellum. Some authorities regard C. huegelii as a synonym of Cyrtostylis reniformis var. huegelii.
Microtis parviflora, commonly known as the slender onion-orchid, is a species of orchid which is native to Australia and New Zealand. It occurs in all states of Australia but is not known from the Northern Territory and may not occur in Western Australia. As with others in the genus, it has a single erect, smooth, tubular leaf and up to eighty flowers on an erect flower spike.
Caladenia footeana, commonly known as the crimson spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and one or two, relatively small pinkish-red flowers with a white, red-striped labellum. Its relatively small size makes it hard to find in its surroundings.
Caladenia incrassata, commonly known as the puppet clown orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and usually only one greenish-yellow and red flower which has a red-striped labellum.
Caladenia remota subsp. remota, commonly known as the outback spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single hairy leaf and one or two relatively large creamy-white to pale yellow flowers. It is relatively common in moist soil around granite outcrops, growing in more inland areas than most other spider orchids.
Cyanicula aperta, commonly known as the western tiny blue china orchid, is a plant in the orchid family Orchidaceae and is endemic to Western Australia. It has a relatively narrow leaf and a single bluish-mauve flower. It is distinguished from the other two similar blue orchids by the sides of the labellum which are erect but well-separated from the column. This species also has a more easterly distribution than C. amplexans and C. sericea.
Microtis media subsp. media, commonly known as the common mignonette orchid, is a species of orchid which is endemic to the south–west of Western Australia. It is a common, widespread orchid with a single smooth, tubular leaf and a flowering spike with up to one hundred small green flowers. It differs from Microtis media subsp. densiflora in the shape of its flower spike and the shape of its labellum.
Microtis alba, commonly known as the white mignonette orchid or slender onion-orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single hollow, onion-like leaf and up to sixty small, green and white flowers with a strong musky fragrance. It is much more common after a fire the previous summer than in unburned country.
Microtis arenaria, commonly known as the notched onion orchid or pale onion orchid, is a species of orchid native to south-eastern Australia and New Zealand. It has a single hollow, onion-like leaf and up to sixty scented, crowded yellowish-green flowers. It is widespread and common, growing in a wide variety of habitats.
Microtis brownii, commonly known as the sweet mignonette orchid or sweet onion orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single hollow, onion-like leaf and up to sixty small, green and white scented flowers well-spaced along the flowering stem. It usually grows in swampy places, flowers more prolifically after summer fires and sometimes forms very large colonies.
Microtis cupularis, commonly known as the cupped mignonette orchid sometimes as Hydrorchis cupularis, is a species of orchid endemic to the south-west of Western Australia. It has a single thin, hollow, onion-like leaf and up to thirty small, yellowish-green and red flowers. The plants often grow in shallow water and are self-pollinating.
Microtis media subsp. densiflora, commonly known as the dense mignonette orchid, is a species of orchid which is endemic to the south–west of Western Australia. It has a single smooth, tubular leaf and a flowering spike with up to one hundred and fifty small yellowish-green flowers. It differs from Microtis media subsp. media in the shape of its flower spike and the shape of its labellum.
Microtis quadrata, commonly known as the south coast mignonette orchid or south coast onion orchid, is a species of orchid endemic to south-west coastal areas of Western Australia. It has a single thin, hollow, onion-like leaf and up to one hundred small, pale green flowers. This onion orchid grows on low mounds in swamps, often with other species of mignonette orchids, and flowers much more prolifically after fire.
Microtis eremicola, commonly known as the desert mignonette orchid or dryland onion orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single hollow, onion-like leaf and up to fifty small, dull green to greenish-yellow flowers. This onion orchid is common in soil pockets on granite outcrops in inland areas, mostly between Hyden and Balladonia.
Microtis familiaris, commonly known as the coastal mignonette orchid or coastal onion orchid is a species of orchid endemic to the south-west coastal region of Western Australia. It has a single hollow, onion-like leaf and up to twenty small, green to greenish-yellow, sweetly scented, widely spaced flowers. It often grows with large populations of other Microtis orchids but only flowers after fire.
Microtis graniticola, commonly known as the granite mignonette orchid or granite onion orchid is a species of orchid endemic to the south-west of Western Australia. It has a single thin, hollow, onion-like leaf and up to sixty small green to greenish-yellow flowers. It grows in soil pockets on granite outcrops, especially where the soil receives run-off during rainy weather.
Microtis orbicularis, commonly known as the dark mignonette orchid, is a species of orchid endemic to southern Australia. It has a single thin, more or less hollow, onion-like leaf and up to fifty small yellowish-green and red flowers. The plants grow in winter-wet areas, often in shallow water and unlike the similar M. cupularis do not turn black as they dry.
Microtis pulchella, commonly known as the beautiful mignonette orchid or beautiful onion orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single hollow, onion-like leaf and up to twenty five white, thinly textured flowers with a slight perfume. It only flowers after fire and only sometimes produces short, thread-like leaves in the absence of fire.
Microtis oligantha, commonly known as the small onion orchid is a species of orchid endemic to New Zealand. It has a single thin, hollow, onion-like leaf and up to ten small green flowers. It differs from the other two onion orchids in New Zealand, in being a much smaller plant with a more pointed dorsal sepal.
Caleana granitica, commonly known as the granite duck orchid is a species of orchid that is endemic to the south-west of Western Australia. It is a species of duck orchid with a single smooth leaf and a single greenish yellow and red flower with the labellum held below the horizontal. It grows on a single granite outcrop near Armadale.
