Gromwell Root application and research Alkanet Root , also known as Batschia canescens, Hoary puccoon, Lithospermum canescens & Dyer’s Bugloss is cultivated in Central and Southern Europe for its dye, which is readily extracted by oils and spirit of wine. It is used in the pharmaceutical industry to give a red colour to salves and in staining wood in imitation of rosewood, or …