Caladenia longicauda subsp. calcigena

Coastal white spider orchid
C. longicauda subsp. calcigena growing in Perth
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Genus: Caladenia
Species:
Subspecies:
C. l. subsp. calcigena
Trinomial name
Caladenia longicauda subsp. calcigena
Synonyms

Arachnorchis longicauda subsp. calcigena (Hopper & A.P.Br.) D.L.Jones & M.A.Clem.

Caladenia longicauda subsp. calcigena, commonly known as the coastal 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 four mostly white flowers. It grows in coastal sand on the west coast and is distinguished from other subspecies growing in the same area, by its longer sepals and petals, small, narrow labellum and by the arrangement of the calli on its labellum.