Caladenia arenicola, commonly known as the carousel spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three red, white and green flowers on a flowering stem up to 60 cm (20 in) high. It is a common species on the Swan Coastal Plain, where it grows in sandy soil under trees.
Caladenia abbreviata, commonly known as the coastal spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three pale, creamy-yellow flowers on a flowering stem up to 35 cm (10 in) high. Although the flowers have long, thread-like petals and sepals, they are shorter and darker than those of other spider orchids. It is a rare, relatively recently discovered species although often found near human activities.
Caladenia bicalliata subsp. bicalliata, commonly known as the limestone spider orchid or dwarf limestone spider orchid, is a plant in the orchid family Orchidaceae and is native to the south-west of Western Australia and coastal areas of South Australia. It has a single erect, hairy leaf and one or two cream-coloured flowers with reddish-brown tips.
Caladenia bicalliata is a plant in the orchid family Orchidaceae and is native to the south-west of Western Australia and coastal areas of South Australia. It has a single erect, hairy leaf and one or two cream-coloured flowers. There are two subspecies differing in the size and colour of the flowers.
Caladenia brevisura, commonly known as the short-sepalled spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It is a common, small-flowered orchid with an erect, hairy leaf and a single greenish flower with red markings, on a flowering stem up to 25 cm (10 in) high. It is found between Ravensthorpe and Israelite Bay.
Caladenia brownii, commonly known as the karri spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has an erect, hairy leaf and up to three flowers which are a combination of red, green, white and yellow. It is found in the high rainfall forests and coastal heath of the far south-west corner of Western Australia and is the only caladenia to grow in karri forest.
Caladenia busselliana, commonly known as Bussell's spider orchid, is a plant in the orchid family Orchidaceae and is endemic to a small area in the south-west of Western Australia. It is a rare orchid with an erect, hairy leaf and up to three pale yellow flowers. Only about fifty specimens are known and it is threatened by habitat destruction and by too-frequent or too infrequent bushfires.
Caladenia christineae, commonly known as Christine's spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to four small, white to cream-coloured flowers. It is distinguished from similar spider orchids by its small, odourless flowers with their stiffly held sepals and petals.
Caladenia citrina, commonly known as the Margaret River spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three lemon-yellow flowers. It has a narrow distribution in the far south-west corner of Western Australia.
Caladenia corynephora, commonly known as the club-lipped spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, hairy leaf and one or two greenish-yellow and red flowers which have a labellum with a club-like tip. It is the only Western Australian caladenia with a clubbed labellum.
Caladenia cruscula, commonly known as the reclining spider orchid is a species of orchid endemic to a small area in the south-west of Western Australia. It has a single hairy leaf and a single cream-coloured flower with a long red fringe on the sides of its labellum.
Caladenia denticulata subsp. albicans, commonly known as the alabaster spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, hairy leaf and one or two pale creamy-white flowers which have a white labellum with red markings. The only known population occurs in a small area near Arrowsmith.
Caladenia doutchiae, commonly known as the purple-veined clown orchid or purple-veined spider 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 with short, downswept petals, and lateral sepals that are broad at the base then narrow to a glandular tip.
Caladenia erythronema, commonly known as the red thread spider orchid, and Nyabing 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 up to three red, yellow or cream-coloured flowers with dangling, thread-like sepals and petals and a small labellum.
Caladenia heberleana, commonly known as Heberle's spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and up to three red, white and pale yellow flowers which have a white, red-tipped labellum.
Caladenia hoffmanii, commonly known as Hoffman's 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, greenish-yellow, red and white flowers which have a greenish-yellow labellum with a red tip. It is distinguished from the Pingaring spider orchid by small differences in the labellum and more northerly distribution.
Caladenia horistes, commonly known as the cream 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, creamy-yellow flowers which have a red-striped labellum and long, dark, thread-like tips on the sepals and petals.
Caladenia longifimbriata, commonly known as the fringed spider orchid or green-comb spider orchid, is a rare species of orchid endemic to the south-west of Western Australia. It has a single, hairy leaf and one or two green, red and white flowers with a long labellum fringe and only occurs in a few scattered populations between Jerramungup and Esperance.
Caladenia multiclavia, commonly known as the lazy 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 greenish-yellow, red and cream-coloured flowers resembling a reclining spider. Although it usually only has a single flower, it often grows in clumps of up to six plants.
Caladenia serotina, commonly known as the Christmas spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and up to three white to cream-coloured and red flowers, although the relative amount of each is variable. It is one of the later-flowering spider orchids and occurs in the far south-west corner of the state.
