Also 5 swynescars, 6 swineskerce, swine carse. [Cf. G. schwein(s)kresse. Through the phonetic similarity of such forms as swinescres, -kers, -kars, and swinesgres, -gers, -gars, this word and SWINES GRASS were formerly synonymous.] † a. = SWINES GRASS, knotgrass. b. The cruciferous plant Senebiera Coronopus; called also buckshorn and wart-cress. c. Fools watercress, Helosciadium nodiflorum. local. d. Ragwort, Senecio Jacobæa. local. e. Nipplewort, Lapsana communis.
c. 1400. MS. Laud 553, lf. 8 b. Centinodium is an herbe þat me cleputh centinodie or sparitonge or swynescars that herbe groweth welney ouer alle & hath mony knottes in on stalk.
1541. Bk. Properties Herbs, D viij. Lingua hi[r]cina. This is called Buckeshorne or Swineskerce.
1578. Lyte, Dodoens, I. lxiv. 95. In some places of England they call it [sc. Coronopus Ruellii] Swynescressis.
1597. Gerarde, Herbal, App., Swine Carse is knotgrasse.
1700. Wallace, Acct. Orkney, ii. 17. Ambrosia campestris repens, Swines cresses.
1803. Sir J. E. Smith, Sowerbys Eng. Bot., XVI. 1130. Senecio Jacobæa. Common Ragwort . In Yorkshire this plant is sometimes called Swines Cresses.
1850. Miss Pratt, Comm. Things Sea-side, i. 87. The common swine-cress, or wart-cress of our inland waste places. Ibid. (1857), Flower. Pl., III. 218. L[apsana] communis (common Nipplewort) is sometimes called Swines-cress.