Li-rich K giant sample (circles) and K giants with IR excess (squares) in the HR diagram. Evolutionary phases: RGB base (broken lines), luminosity bump (red shade), RGB tip (blue band), clump region (green shade) are shown. The 15 Li-rich K giants taken from Kumar et al. (2011) are shown as black circles and the rest as light blue circles. K giants with both far-IR excess and Li enhancement are shown as big blue circles. Tracks of K giants with mass 0.8 M_⊙ and 3.0 M_⊙ are shown. All the evolutionary phases are shown for two metallicity values of [ Fe/H ] = 0.0 and −0.3.