HÆGGSTRÖM, C.-A.; HÆGGSTRÖM, E. Echium vulgare (Boraginaceae) in the Åland Islands. Memoranda Societatis pro Fauna et Flora Fennica, [S. l.], v. 91, 2015. Disponível em: https://journal.fi/msff/article/view/53548. Acesso em: 4 dec. 2024.