Lithium data for field evolved stars from the sample by Charbonnel et al. (in prep., see the text) that are segregated according to their mass (left and right panels include respectively sample stars with masses lower and higher than 2 M_⊙; Li detections and upper limits are shown as circles and triangles respectively). Theoretical lithium evolution is shown from the ZAMS up to the end of the early-AGB. Various lines correspond to predictions for stellar models of different masses computed without or with rotation as indicated, and with thermohaline mixing in all cases (with C_t = 10³).