Symphytum is a genus of flowering plants in the borage family, Boraginaceae, known by the common name comfrey (pronounced /ˈkʌmfri/, from the Latin confervere...

Symphytum caucasicum, the beinwell, blue comfrey, or Caucasian comfrey, is an ornamental plant of genus Symphytum in the family Boraginaceae, which is...

). pp. 787–788. ISBN 3800131315. Symphytum officinale L. s. l., Arznei-Beinwell. In: FloraWeb.de. "Which flowers are the best source of nectar?". Conservation...

science.kew.org/taxon/urn:lsid:ipni.org:names:120843-1 David Janßen. "Futter-Beinwell". Flora Emslandia – Pflanzen im Emsland (Symphytum × uplandicum) (in German)...