The roots of
Anchusa (like those of
Alkanna and
Lithospermum) contain anchusin (or alkanet-red), a red-brown resinoid colouring matter. It is insoluble in water, but soluble in alcohol, chloroform and ether. The red-tinge was used in women's cosmetics as rouge to redden the cheeks. In some species, the resinoid was collected and used for medicinal purposes.
Gustaf Dalman, who conducted geographical and ethnographic research in
Palestine in the early 20th-century, heard the plant
lisān eth-thōr described to him in the country as being an edible wild herb, and which he applied to
A. officinalis, saying that its young leaf growths of spring were collected by some of the indigenous Arab peoples of the land, who then boiled them to be eaten. After boiling, the leaves are finely chopped and sautéed in oil and garlic, and used as a meat garnish or as a viand with eggs. The Greek physician and botanist
Dioscorides (c. 40–90
CE) mentions the medicinal properties of
Anchusa () in his day, adding that "the ointment makers use the root for thickening ointments." Burns and skin lesions can be cured with an ointment prepared from crushed leaves of the plant with the addition of olive oil. The Jewish philosopher and physician,
Maimonides (1138–1204 CE), recalls the genera
Lingua Bovina ("ox-tongue") in his
Guide to Good Health (Regimen Sanitatis), saying that it is "a proven light
drug used in compound decoctions", after its leaves were dried, ground into a powder, and infused in hot water. ==References==