adder's tongue

English Thesaurus

1. ferns with fertile spikes shaped like a snake's tongue (noun.plant)

hypernym	:	fern,
definition	:	any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores (noun.plant)

hyponym	:	ophioglossum pendulum, ribbon fern,
definition	:	epiphytic fern with straplike usually twisted fronds of tropical Asia and Polynesia and America (noun.plant)

member meronym	:	genus ophioglossum, ophioglossum,
definition	:	the type genus of the fern family Ophioglossaceae (noun.plant)