wild madder

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Noun1.wild madder - Eurasian herb with ample panicles of small white flowers; naturalized in North America
bedstraw - any of several plants of the genus Galium
References in periodicals archive ?
Devotees of the Persian carpet have had numerous carpet buyer's guides and histories in the past, but ROOT OF WILD MADDER; CHASING THE HISTORY, MYSTERY, AND MORE OF THE PERSIAN CARPET is something different: a journey which follows the Persian carpet from remote Afghanistan and Iranian villages where they're often woven by young girls to bazaars which trade them, artists which revere them, and US carpet showrooms which display them for sale.
By Linda Hales Somewhere past Tehran, beyond the void known as the Great Salt Desert, Brian Murphy arrived at a field of wild madder. He had been tracking the history of Persian carpets since 1999, between assignments in Iran and Afghanistan for the Associated Press.
Symplocos leaves, already pale yellow, when mixed with turmeric produce strong yellows, while blues come from indigo, brick reds from wild madder, and crimsons and scarlets from a combination of madder and lac or from lac alone.