Gromwell

…the genus Lithospermum contains about 50 species, many of which are found in the Northern Hemisphere. Several species of the genus Lithospermum that are closely related to the Japanese purple are called gromwells in English.
[Boraginaceae]
Dicotyledonous sympetalous flowers.…

*Some of the terminology explanations that mention "gromwell" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…ムラサキ属Lithospermumは約50種を含み，北半球に多い。ムラサキ属のうち日本のムラサキにごく近い数種を英名でgromwellと呼ぶ。
【ムラサキ科Boraginaceae】
　双子葉植物合弁花類。…

※「gromwell」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報