Peruzzi, L., Garbari, F. & Bottega, S.: Symphytum tanaicense (Boraginaceae) new for the Italian flora. — Willdenowia 31: 33–41. 2001. — ISSN 0511-9618.
Symphytum tanaicense is recorded for the first time for Italy (Lake of Massaciuccoli, NW Tuscany). Morphological, karyological and ecological characteristics of this plant, as compared with those of S. officinale, are presented and discussed.