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adder's-tongue
[ ad-erz-tuhng ]
noun
- a fern of the genus Ophioglossum, having one or sometimes two sterile leaves and a fruiting spike.
- any of several American dogtooth violets.
adder's-tongue
noun
- any of several terrestrial ferns of the genus Ophioglossum, esp O. vulgatum, that grow in the N hemisphere and have a spore-bearing body that sticks out like a spike from the leaf: family Ophioglossaceae
- another name for dogtooth violet
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