NLTE lithium abundance as a function of log g for stars with different masses. The lines represent models for stars evolving from the subgiant branch to the RGB tip; solid lines show the 1DUP, the dashed lines represent the models with thermohaline- and rotation-induced mixing from Lagarde et al. (2012). Black lines correspond to Z = 0.014, pink lines to Z = 0.004, and green lines to Z = 0.002. Symbol meanings are the same as in Fig. 6. Unfilled symbols represent upper lithium abundance limits. The Li-rich star is marked with a red star symbol.