Corybas, commonly known as helmet orchids, is a genus of about 120 species of plants in the orchid family, Orchidaceae. Helmet orchids are small, perennial, deciduous herbs and are nearly always terrestrial. They have a single leaf at their base and a single flower on a short stalk, the flower dominated by its large dorsal sepal and labellum. Species of Corybas are found in Australia, New Zealand, New Guinea, Southeast Asia, the Himalayas, southern China, many Pacific islands and a few sub-Antarctic islands.
Roscoea cangshanensis is a perennial herbaceous plant native to the mountains of China, being found in Yunnan. Most members of the ginger family (Zingiberaceae), to which it belongs, are tropical, but R. canshanensis, like other species of Roscoea, grows in much colder mountainous regions.
Corybas aconitiflorus, commonly known as the cradle orchid or spurred helmet orchid, is a species of terrestrial orchid endemic to eastern Australia, occurring from south-east Queensland to Tasmania. The small flowers have a hooded appearance as the uppermost sepal hides most of the rest of the flower. It is the type species of the genus Corybas.
Pterostylis micromega, commonly known as the swamp greenhood, is a species of greenhood orchid endemic to New Zealand. Both flowering and non-flowering plants have a rosette of leaves while flowering plants also have a single, relatively large whitish flower with a pointed dorsal sepal. The flower colour and pointed dorsal sepal are unique in New Zealand Pterostylis.
Corybas globulus is a species of helmet orchid endemic to a small area of the New England Tableland in northern New South Wales. It is a relatively small orchid with a bright green, heart-shaped leaf and a bulbous, dark reddish purple flower.
Corybas acuminatus, commonly known as the dancing spider orchid or helmet flower, is a species of terrestrial orchid endemic to New Zealand. It has a triangular, sharply pointed leaf and a small translucent, greenish-white flower with purple markings and with very long sepals. It is found on both the main islands of New Zealand and also some of the off-shore islands.
Corybas cheesemanii, commonly known as Cheesemans spider orchid or spurred helmet orchid, is a species of terrestrial orchid endemic to New Zealand. It is a small orchid with a single pale green, heart-shaped leaf and usually only a single flower variously coloured from maroon to completely white. It usually grows in deep shade, often in deep leaf litter and flowers in autumn and winter.
Corybas confusus, commonly known as the spider orchid is a species of terrestrial orchid endemic to New Zealand. It has a single heart-shaped leaf and a single dark green or light green flower with reddish maroon streaks and blotches and long, thread-like lateral sepals and petals. It grows in highland areas on both main islands.
Corybas fimbriatus, commonly known as the fringed helmet orchid, is a species of terrestrial orchid endemic to eastern Australia. It has a broad egg-shaped to round leaf and a dark reddish purple to crimson flower with translucent patches. It is similar to C. hispidus but its labellum lacks a creamy-white centre and is not covered with bristly hairs.
Corybas × miscellus, commonly known as the hybrid helmet orchid, is a hybrid species of terrestrial orchid endemic to South Australia and a very small area in far western Victoria. It has a heart-shaped to more or less round leaf and a single reddish purple flower with greyish translucent areas. It is a natural hybrid between C. diemenicus and C. incurvus and shares the characteristics of the parent species.
Adenochilus gracilis is a species of plant in the orchid family Orchidaceae and is endemic to New Zealand. It has a long, thin underground rhizome, a single leaf on the flowering stem and a single white flower with glandular hairs on the outside. Its labellum has red to maroon bars and a central band of yellow calli, but is almost obscured by the dorsal sepal.
Corybas vitreus is a species of orchid endemic to New Zealand, and first described in 2016 by Carlos Adolfo Lehnebach.
Corybas oblongus is a species of terrestrial orchid endemic to New Zealand. It has a solitary oval-shaped leaf, often patterned with maroon, and a reddish-purple and white flower with a fimbriate labellum.
Corybas obscurus is a species of terrestrial orchid endemic to New Zealand. It has a solitary heart-shaped leaf and a deep crimson or nearly black flower and is part of the Corybas trilobus aggregate.
Corybas sanctigeorgianus is a species of terrestrial orchid endemic to the North Island of New Zealand. It is part of the C. trilobus aggregate, whose members are characterized by a funnel or dish-shaped labellum and an often heart or kidney-shaped solitary leaf.
Corybas hatchii is a species of terrestrial orchid endemic to New Zealand. It has a solitary rounded leaf, often flecked with maroon, and a single pale green and maroon flower with long, threadlike lateral sepals and petals.
Corybas hypogaeus is a species of terrestrial orchid endemic to the New Zealand. It is part of the C. trilobus aggregate, whose members are characterized by a funnel or dish-shaped labellum and an often heart or kidney-shaped solitary leaf.
Corybas iridescens is a species of terrestrial orchid endemic to the New Zealand. It has a solitary fleshy oval-shaped leaf and a single deep crimson flower, sometimes accompanied with green, with a tapering dorsal sepal.
Corybas papillosus is a species of terrestrial orchid endemic to the New Zealand. It has a solitary rounded leaf with a heart-shaped base and a single flower with a long, slender green dorsal sepal, as well as a crimson and white labellum.
Corybas papa is a species of terrestrial orchid endemic to the North Island of New Zealand. It has a solitary wedge-shaped leaf and single translucent green flower with a strongly deflexed labellum and slender, threadlike lateral sepals and petals.
