[The colours and we. II. The plant dyes]

chemical composition color colorant colorantes colour composition chimique cosecha couleur curtientes dye plants dyes flavonoide flavonoides flavonoids harvesting histoire historia history lichen lichenes monde mundo organic compounds pigment pigmentos pigments plant products plantas silvestres plantas tintoreas plante sauvage plante tinctoriale procesamiento processing productos de origen vegetal substance tannante tanning agents technologie traditionnelle tecnologia tradicional textile textiles traditional technology traitement wild plants world