Rotation periods vs. Gaia colours for single members of M35 and the Pleiades. The colour of each symbol indicates the deviation of EW(Li) from a third-order polynomial fit to EW(Li) vs. (BP − RP)₀ for the M35 sample shown in the upper panel. Top: M35 single stars. Circles, triangles, and squares have the same meaning as in Fig. 7 whereas stars account for the M35 single sources analysed in Jeffries et al. (2021) which do not have counterpart in our sample. Bottom: Pleiades single stars taken from Barrado et al. (2016) and Bouvier et al. (2018). Note that we have chosen the Li EWs and rotation periods published in Bouvier et al. (2018) for all the sources which have counterpart in both studies. We have only plotted those Pleiades members whose Gaia colours are within the range covered by the M35 sample shown on the top panel. Gaia colours have been dereddened following Curtis et al. (2020) with A_V = 0.12.