Rubia Tinctorum L. (Rubiaceae) or Madder as One of the Living Color to Dyeing Wool
نویسندگان
1 Graduate of Master Textile Engineering, branch Tehran, Islamic Azad University, Tehran, Iran
2 Specializing in the affairs herbal and industrial dyeing crude materials for exquisite carpet weaving, Kashan, Iran
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چکیده
The medicinal part of Rubia tinctorum is the dried root. The small yellowishgreen flowers are in loose, leafy, long-peduncled terminal or auxiliary cymes. The margin of the calyx is indistinct, 4- to 5-sectioned and has a tip that is curved inward. There are five stamens and an inferior ovary. The fruit is a black, pea-sized glabrous, smooth drupe containing two seeds. The perennial plant grows to a height of 60 to 100 cm. The pencil thick rhizome creeps widely underground. The stem is quadrangular with backward turning prickles at the edges
