Spider orchid typically refers to the orchid genus Caladenia as a whole.
It may also mean one of the following: Several Corybas species, including Corybas macranthus Corybas trilobus Dendrobium tetragonum (Common spider orchid, Tree spider orchid) Bartholina burmanniana Several Ophrys species, including Ophrys fuciflora (Late spider orchid) Ophrys sphegodes (Early spider orchid) Members of the genus Brassia