Microtis, commonly known as onion orchids or mignonette orchids is a genus of about 20 species of plants in the orchid family, Orchidaceae. Onion orchids are terrestrial herbs with a single leaf at the base of the plant. They are similar to orchids in the genus Prasophyllum in that they have an onion-like leaf. The flowers are small but often scented and attractive to their insect pollinators. They are widespread in Asia, Australia and some Pacific islands.
Caladenia carnea, commonly known as pink fingers, is a plant in the orchid family Orchidaceae and is endemic to eastern and south-eastern Australia, including Tasmania. It has a single thin, green leaf and one to five white or pink flowers with red stripes and two rows of yellow-tipped "calli" on their labellum.
Microtis media, commonly known as the common mignonette orchid, is a species of herbaceous plants of the family Orchidaceae endemic to the south–west of Western Australia. It has a single tubular leaf and up to one hundred small, yellowish green flowers arranged along the flowering stem.
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.
Caladenia gracilis, commonly known as musky caps or musky caladenia, is a plant in the orchid family Orchidaceae and is endemic to eastern and south-eastern Australia, including Tasmania. It is a ground orchid with a single leaf and up to six flowers which are dark-coloured on the back and white on the front, sometimes tinged with pink and with a strong musky or soapy odour. The species is also known as Caladenia moschata in Victoria.
Prasophyllum alpinum, commonly known as the alpine leek orchid, is a species of orchid endemic to Tasmania. It was formerly described as occurring in mainland Australia but has smaller flowers than the species occurring there. It has a single, tube-shaped leaf and up to fourteen green to greenish-brown flowers and grows in subalpine areas.
Caladenia alata, commonly known as the fairy orchid, is a plant in the orchid family Orchidaceae and is found in south-eastern Australia and New Zealand. It is a ground orchid with small, usually short-lived flowers, which have relatively stiffly held petals and sepals and reddish-purple bars on the labellum.
Caladenia congesta, commonly known as black-tongue caladenia, is a plant in the orchid family Orchidaceae and is endemic to Australia. It is a ground orchid with a single, sparsely hairy leaf, and up to three bright pink flowers with the central part of the labellum completely covered with black calli. It is a widespread species but not common in any part of its range.
Caladenia filamentosa, commonly known as daddy-long-legs, is a plant in the orchid family Orchidaceae and is endemic to eastern Australia. It is a ground orchid with a single hairy leaf and up to four, usually dark red flowers with long, drooping lateral sepals and petals.
Caladenia patersonii is a plant in the orchid family Orchidaceae and is native to Victoria and Tasmania. It is a ground orchid with a single hairy leaf and one or two creamy-white, yellowish or pink flowers.
Caladenia testacea, commonly known as honey caps, or honey caladenia is a plant in the orchid family Orchidaceae and is endemic to New South Wales. It is a ground orchid with a single, sparsely hairy leaf and up to three white to yellowish-green flowers with brownish tips and a darker back.
Caladenia minorata, commonly known as the small waxlip orchid, is a plant in the orchid family Orchidaceae and is endemic to eastern Australia. It is a ground orchid with a single very hairy leaf and one or two deep violet-blue flowers. It has been known as Glossodia minor since its description by the prolific Scottish botanist Robert Brown in 1810, but recent discoveries suggest its inclusion in the genus Caladenia. It is similar to Caladenia major but is smaller in all its parts.
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 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.
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.
Prasophyllum macrostachyum, commonly known as the laughing leek orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single smooth, tube-shaped leaf and up to thirty yellowish-green and purple flowers. It is one of the few Western Australian leek orchids which is not stimulated by summer fires and also has an unusually long flowering period.
Acianthus caudatus, commonly known as the mayfly orchid, is a flowering plant in the orchid family Orchidaceae and is endemic to eastern Australia. It is a terrestrial herb with a single egg-shaped or heart-shaped leaf and up to nine dark purplish flowers with thin, spreading sepals and petals, often with a musty odour.
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 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 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.
