Pleione formosana, the Taiwan pleione or windowsill orchid, is a species of flowering plant in the family Orchidaceae, native to southeastern China as well as northern and central Taiwan.

It is a deciduous perennial, terrestrial orchid growing to 15 cm (6 in) tall by 30 cm (12 in) wide, with spherical pseudobulbs that produce a single folded leaf.

The pink flowers, borne in spring, have fringed white lips that are strongly marked and mottled with brown on the inner surface.

[3] This plant has gained the Royal Horticultural Society's Award of Garden Merit.

[4][5] In the UK it is rated as H3, which means that it can be grown outside in mild, sheltered areas where the soil does not dry out.