The Collaborative International Dictionary of English v.0.48:

Ramsted \Ram"sted\ (r[a^]m"st[e^]d), n. (Bot.)
   A yellow-flowered weed; -- so named from a Mr. Ramsted who
   introduced it into Pennsylvania. See Toad flax. Called also
   Ramsted weed.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Toadflax \Toad"flax`\, n. (Bot.)
   An herb (Linaria vulgaris) of the Figwort family, having
   narrow leaves and showy orange and yellow flowers; -- called
   also butter and eggs, flaxweed, and ramsted.
   [1913 Webster]