Platanthera bifolia pla·tant·he·rabifolia uncommon noun 1. south European orchid having fragrant greenish-white flowers; sometimes placed in genus Habenaria Synonymslesser butterfly orchidPlatanthera bifoliaHabenaria bifolia Related words Broader terms orchid Parts Platanthera WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.