addertongue

adder's-tongue

[ad-erz-tuhng]
noun
1.
a fern of the genus Ophioglossum, having one or sometimes two sterile leaves and a fruiting spike.
2.
any of several American dogtooth violets.
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adder's-tongue
 
n
1.  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
2.  another name for dogtooth violet

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