adder's tongue

noun4

1. •
   Any of several ferns in the genus Ophioglossum, whose spores are produced on a spike resembling a serpent's tongue.
2. •
   Hart's tongue (fern) (Asplenium scolopendrium, syn. Phyllitis scolopendrium).
3. •
   A lily in the genus Erythronium, other common names of which include fawn lily, trout lily and dog's tooth violet.
4. •
   early-purple orchid, early spring orchis Orchis mascula