Caladenia infundibularis, commonly known as the funnel-web 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 greenish-yellow flowers which have a red-tipped labellum. Description Caladenia infundibularis is a terrestrial, perennial, deciduous, herb with an underground tuber and a single hairy leaf, long and about wide. Up to three greenish-yellow flowers long and wide are borne on a stalk tall. The dorsal sepal is erect, long and wide. The lateral sepals are long, wide and have thin, yellowish-brown, club-like glandular tips long. The petals are long, wide and spread widely or turn slightly downwards. The labellum is greenish-yellow with a red tip, long, wide with the tip turned downwards. It is funnel-shaped at its tip and has many spreading teeth up to long, along its sides and four or six rows of yellowish calli along its mid-line. Flowering occurs in October and November. Taxonomy and naming Caladenia infundibularis was first formally described by Alex George in 1984 and the description was published in Nuytsia from a specimen found near Augusta. The specific epithet (infundibularis) is a Latin word meaning "funnel-shaped", referring to the shape of the base of the labellum. Distribution and habitat The funnel-web spider orchid occurs between Dunsborough and Northcliffe in the Jarrah Forest, Swan Coastal Plain and Warren biogeographic regions where it grows in coastal heath, forest and woodland. Conservation Caladenia infundibularis is classified as "Not Threatened" by the Western Australian Government Department of Parks and Wildlife. References infundibularis Orchids of Western Australia Endemic orchids of Australia Plants described in 1984 Endemic flora of Western Australia