Distribution of K2 rotational periods from Rebull et al. (2016) is shown for Pleiades members as a function of (J–K_s) color. Crosses are objects without a lithium equivalent width measurement available in the literature, which encompasses mostly late-K- and M-type stars. Circles pertain to LiI 670.8 nm equivalent width measurements gathered from the literature (see Barrado et al. 2016) while triangles indicate new lithium equivalent width measurements reported in this study. The color of the symbol scales with lithium equivalent width (in mÅ), as shown on the right side of the plot. Approximate spectral types are indicated at the top of the plot.