Linnaeus, C. (1 May 1753), Species Plantarum 1: 66 [tax. nov.]

• Type: (not designated).

Britton, N.L. & Brown, A. (7 June 1913), An Illustrated Flora of the Northern United States, Canada and the British possessions Edn. 2, 3: 92 [secondary reference]

• Type: Symphytum officinale L.

Curtis, W.M. (1967), Angiospermae: Plumbaginaceae to Salicaceae. The Student's Flora of Tasmania 3: 489 [secondary reference]

common name: Comfrey [n/a]

Rye, B.L. in Marchant, N.G., Wheeler, J.R., Rye, B.L., Bennett, E.M., Lander, N.S. & Macfarlane, T.D. (1987), Boraginaceae. Flora of the Perth Region 1: 549 [secondary reference]

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Boraginaceae. Flora of Victoria 4: 400-401 APC [secondary reference]

• APC Dist.: NSW (naturalised), ACT (doubtfully naturalised), Vic (naturalised), Tas (doubtfully naturalised)

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 834 [secondary reference]

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