Mad·der n. Bot. A plant of the genus Rubia (Rubia tinctorum). The root is much used in dyeing red, and formerly was used in medicine. It is cultivated in France and Holland. See Rubiaceous.
Note: ☞ Madder is sometimes used in forming pigments, as lakes, etc., which receive their names from their colors, such as madder yellow.
Field madder, an annual European weed (Sherardia arvensis) resembling madder.
Indian madder , the East Indian Rubia cordifolia, used in the East for dyeing; -- called also munjeet.
Wild madder, Rubia peregrina of Europe; also the Galium Mollugo, a kind of bedstraw.
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Bed·straw n.
1. Straw put into a bed.
2. Bot. A genus of slender herbs, usually with square stems, whorled leaves, and small white flowers.
Our Lady's bedstraw, which has yellow flowers, is Galium verum.
White bedstraw is Galium mollugo.
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Galium mollugo
n : Eurasian herb with ample panicles of small white flowers;
naturalized in North America [syn: wild madder, white
madder, white bedstraw, infant's-breath, false
baby's breath]