[f. SULPHUR sb. + WORT. Cf. G. schwefelwurz.] An umbelliferous plant, Peucedanum officinale, having pale-yellow flowers; hog’s fennel.

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  Marsh Sulphurwort, P. palustre.

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1578.  Lyte, Dodoens, 298. Of Horestrange or Sulphurwort.

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1597.  Gerarde, Herbal, II. ccccx. 896. Sulphurwoort or Hogs Fennell, hath a stiffe and hard stalke full of knees or knots.

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1627.  May, Lucan, IX. 1049. Sicilian Thapsos burn’d with Sulphurwort.

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1777.  Jacob, Catal. Plants, 83.

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1858.  A. Irvine, Handbk. Brit. Plants, 596.

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1906.  Essex Rev., XV. 167. The rare sulphur-wort … is still abundant at Landermere.

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