Echium vulgare L.
Synonym(s):
Echium anglicum Mill.
Echium wierzbickii Haberle ex Rchb.
Data source(s):
  • Tutin, T.G., et al. 1972. Flora Europaea. Volume 3: Diapensiaceae to Myoporaceae. Cambridge: Cambridge University Press xxiv-370 pp., p.99