The Collaborative International Dictionary of English v.0.48:

Hare's-ear \Hare's"-ear`\ (h[^a]rz"[=e]r`), n. (Bot.)
   An umbelliferous plant (Bupleurum rotundifolium); -- so
   named from the shape of its leaves. --Dr. Prior.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Thoroughwax \Thor"ough*wax`\, n. (Bot.)
   (a) An umbelliferous plant (Bupleurum rotundifolium) with
       perfoliate leaves.
   (b) Thoroughwort.
       [1913 Webster]