1. (noun) helmet orchid, greenhood
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
Synonyms: greenhood, helmetflower, helmet orchid
2. (noun) helmetflower, helmet orchid
any of several orchids of the genus Coryanthes having racemes of a few musky-scented waxy flowers with a helmet-shaped lip process
Synonyms: helmet flower, monkshood, greenhood, helmetflower, skullcap, helmet orchid
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Synonyms for helmet orchid 
