Caladenia attingens, commonly known as mantis orchids, are plants in the orchid family Orchidaceae and are endemic to the south-west of Western Australia. There are three subspecies, each of which has a single hairy leaf and one or two brightly coloured flowers with upswept sepals and a labellum with long, comb-like fringes. The subspecies differ in size, distribution and habitat.
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 subsp. cleistogama, commonly known as the shy limestone spider orchid or sandhill spider orchid, is a plant in the orchid family Orchidaceae and is native to the south-west of Western Australia. It has a single erect, hairy leaf and one or two cream-coloured flowers which are smaller than those in subspecies bacalliata.
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. 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 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 exilis subsp. exilis, commonly known as the salt lake spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It is a relatively common spider orchid with a single erect, hairy leaf and up to three white to greenish-cream flowers with a small white, red-striped labellum.
Caladenia exilis subsp. vanleeuwenii, commonly known as the Moora spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It is a relatively rare spider orchid with a single erect, hairy leaf and up to three variably-coloured flowers with a small white, red-striped labellum. It differes from subspecies exilis in having variably coloured flowers, different growth habit, earlier flowering and different habitat.
Caladenia attingens subsp. attingens, commonly known as the forest mantis orchid or sneezing spider orchid, is a species of orchid endemic to the south-west of Western Australia. It is a relatively common orchid with a single erect, hairy leaf and one or two green, yellow and red flowers. It is similar to the fringed mantis orchid but has smaller flowers and has a more southerly distribution.
Caladenia attingens subsp. effusa, commonly known as granite mantis orchid, is a subspecies of orchid endemic to the south-west of Western Australia. It has a single erect, hairy leaf and one or two green, yellow and red flowers. It differs from the other subspecies of Caladenia attingens in having smaller flowers with lateral sepals which are not upswept and a labellum which is less than 15 mm (0.6 in) wide.
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 pendens subsp. pendens, commonly known as the pendant 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 relatively large, creamy-white flowers with long drooping petals and sepals and sometimes has a sickly-sweet scent.
Caladenia pendens subsp. talbotii, commonly known as Talbot'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 hairy leaf and one or two white, red and yellow flowers with long drooping petals and sepals and sometimes has a citrus-like scent.
Caladenia pholcoidea subsp. pholcoidea, commonly known as the Albany 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 four pale yellow flowers with long drooping petals and lateral sepals.
Caladenia pholcoidea subsp. augustensis, commonly known as the Augustus spider orchid, is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. It is a rare orchid with a single hairy leaf and up to three mostly white flowers with long spreading petals and lateral sepals.
Caladenia radialis, commonly known as the drooping 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 red and cream-coloured flowers. In good seasons it forms clumps of up to ten plants.
Caladenia remota subsp. remota, commonly known as the outback 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 one or two relatively large creamy-white to pale yellow flowers. It is relatively common in moist soil around granite outcrops, growing in more inland areas than most other spider orchids.
Caladenia remota subsp. parva, commonly known as the Perenjori 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 creamy-white to pale yellow flowers. It has a more restricted and more westerly distribution than subspecies remota.
Caladenia uliginosa subsp. uliginosa, commonly known as the dainty spider orchid, or darting 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 four greenish-cream flowers which have a forward-projecting labellum with a dark red tip.
Caladenia uliginosa subsp. candicans, commonly known as the northern darting 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 yellowish-cream flowers which have a forward-projecting labellum lacking the red tip of subspecies uliginosa.
