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 unifolia, commonly known as the common onion orchid, is a species of orchid occurring from south China to Japan, Malesia, and Australasia to the Southwest Pacific. It has a single green leaf and up to one hundred small green or yellowish-green flowers. A common, widespread orchid which is easily grown in pots and is sometimes a weed in plant nurseries.
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 graniticola, commonly known as the Pingaring 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 yellowish-green, red and white flowers which have a greenish-yellow and white labellum with a red tip. It was originally described as Caladenia hoffmanii subsp. graniticola but has a slightly different labellum and column.
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.
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, is a species of orchid endemic to south-eastern Australia. 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 atrata, commonly known as the swamp mignonette orchid or yellow onion orchid and sometimes as Microtidium atratum, is a species of orchid endemic to southern Australia. It has a single thin leaf and up to forty or more yellowish-green flowers. The flowers are the smallest of any Australian ground-dwelling orchid. The orchid usually grows in large colonies after fire and although small, are easily seen because of their very large numbers in their blackened surroundings.
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 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 eremaea, commonly known as the slender mignonette orchid or inland onion orchid is a species of orchid endemic to the south-west of Western Australia and western South Australia. It has a single thin, hollow, onion-like leaf and up to fifty small greenish-yellow flowers. The flowers have a distinctive heart-shaped labellum and the orchid generally grows in more inland areas than most other onion orchids.
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 rara, commonly known as the scented onion orchid, is a species of orchid endemic to Australia, with the exception of the Northern Territory. It has a single hollow, onion-like leaf and up to fifty small green or yellowish-green, scented flowers. It is similar to Microtis oblonga and some authorities regard the two as being one species.
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.
Diuris setacea, commonly called the bristly donkey orchid, is a species of orchid that is endemic to the south-west of Western Australia. It has a tuft of up to ten twisted leaves at its base and up to seven yellow flowers with a few brown markings. It grows in moist soil on granite outcrops and flowers much more prolifically after fire the previous summer.
