Left-hand side: normalised spectra for 13 stars that have T_eff >  5800 K and where the Li line at 6707.8 Å could be detected and the Li abundance measured. The vertical dotted line shows the wavelength where the Li line is located and the red solid lines show the best-fitting synthetic spectra. Right-hand side: normalised spectra for 13 stars that have T_eff >  5700 K and where the Li line at 6707.8 Å could not be detected, and only A(Li) upper limits could be determined. The vertical dotted line shows the location where the Li line should be. For each spectrum we give [Fe/H], T_eff, A(Li), the measured S/N per pixel, and the age of the star.