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The root bark is used to make a colour-fast red dye.
Names
Scientific
Oldenlandia umbellata
Synonym
Hedyotis umbellata
English
Chay root
Choy root
Dutch
Chay
Taxonomy
Order
Gentianales
Family
Rubiaceae
Genus
Oldenlandia
Species
Oldenlandia umbellata (Chay root)
Crop categories
Dye crops
Minor crops
Subtropical crops
Tropical crops
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