Lithospermum barbigerum (I.M. Johnst.) J.I. Cohen Lithospermum barbigerum (I.M. Johnst.) J.I. Cohen in Brittonia 61(2): 108. 2009 sec. Cohen 2018≡Macromeria barbigera I.M. Johnst. in J. Arnold Arbor. 16: 189. 1935 syn. sec. Cohen & Davis 2009