1) Helmet orchid 2) Orchid 3) Orchidaceous plant 
• (n.) A state of greenness; verdancy.
(genus Pterostylis), any of almost 100 species of orchids (family Orchidaceae) native to Australasia. Greenhoods have dull-coloured, hooded flowers ... [1 related articles]
noun any of numerous orchids of the genus Pterostylis having leaves in a basal rosette and green flowers often striped purple or brown or red with the dorsal sepal incurved to form a hood