3602882 1055546 Vernonia amygdalina Delile L. Balugani, Drawings of African plants, from the collection made by J. Bruce on his travels to discover the source of the Nile (1767-1773): t. 111 (1765)
 
2870342 1055546 Vernonia amygdalina Delile J. Hutchinson, J.M. Dalziel, R.W.J. Keay, Fl. W. Trop. Afr., ed. 2, vol. 2 : p. 278, fig. 260 (1963) [W.E. Trevithick]