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 dimidia, commonly known as the chameleon orchid is a species of orchid endemic to the south-west of Western Australia. It has a single hairy leaf and one or two yellow, cream-coloured or pinkish flowers. It is a variable species, similar to the Joseph's spider orchid but has a more northerly distribution and smaller flowers.
Caladenia arrecta, commonly known as the reaching 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, yellow and green flowers on a flowering stem up to 35 cm (10 in) high. It is distinguished from the similar C. longiclavata and C. magniclavata by its upswept petals and distinctive calli. Although not common, it is widespread in south-eastern coastal areas.
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 caesarea subsp. caesarea, commonly known as the mustard spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single spreading, hairy leaf and up to three mustard-coloured flowers with red stripes. It was originally described as a subspecies of Caladenia filamentosa but the rich colour of its flowers and prominent labellum separate it from that species.
Caladenia caesarea subsp. transiens, commonly known as the dwarf mustard spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It has a single spreading, hairy leaf and up to three small lemon-yellow flowers with red stripes. It is only known from a single small population near the town of Williams.
Caladenia chapmanii, commonly known as Chapman'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 three flowers which are either maroon, yellow or cream-coloured.
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 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 denticulata subsp. denticulata, commonly known as the yellow 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 yellowish flowers which have a white labellum with pale red markings.
Caladenia denticulata subsp. rubella, commonly known as the clumped 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 dull or pinkish red flowers with prominent dull red markings and with a white labellum with red markings.
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 fuscolutescens, commonly known as the ochre 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 brownish-yellow flowers with a pale yellow, red-striped labellum. It is most common in spring after bushfires in the previous summer.
Caladenia longicauda subsp. merrittii, commonly known as Merritt's white 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 large, mainly white flowers with very long, drooping lateral sepals and petals, and a white broad labellum with relatively short labellum teeth. It is one of the largest spider orchids.
Caladenia splendens, commonly known as the splendid spider orchid, or splendid white 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 mostly white flowers with a fringe of long teeth on the sides of the labellum. Along with the giant spider orchid, Caladenia excelsa it is the largest of the spider orchids.
Caladenia straminichila, commonly known as the Tenterden yellow spider orchid, is a species of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and one or two pale yellow flowers which have a red-striped labellum with short teeth on its sides.
Caladenia ultima, commonly known as the late 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 creamy-yellow flowers with a red-striped labellum. It is one of the last spiders orchids to flower each year.
Caladenia viridescens, commonly known as the Dunsborough 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 pale greenish-yellow flowers with faint red or pink markings.
Caladenia xantha, commonly known as the primrose 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 yellow flowers with a cream-coloured, brown-striped labellum.
