It is distinguished from the other two similar blue orchids by the sides of the labellum which curve over the column and almost touch.

Caladenia amplexans is a terrestrial, perennial, deciduous, herb with an underground tuber and a single flat, hairy leaf, 40–100 mm (2–4 in) long and 6–10 mm (0.2–0.4 in) wide which often lies flat on the ground.

[2][3][4] Caladenia amplexans was first formally described in 1984 by Alex George in the journal Nuytsiafrom specimens was collected near Wubin.

[5] The specific epithet (amplexans) is a Latin adjective meaning "encircling" or "embracing" and refers to the way the labellum lobes surround the column.

[6] Dainty blue china orchid is found in a broad area from Norseman to north of Kalbarri, growing in a range of drier habitats including the edges of salt lakes and rocky hills.