  Lithium (Li) abundance is an age indicator for G, K, and M stellar types, as
its abundance decreases over time for these spectral types. However, despite
the observational efforts made over the past few decades, the role of rotation,
activity, and metallicity in the depletion of Li is still unclear. We have
investigated how Li depletion is affected by rotation and metallicity in G and
K members of the roughly Pleiades-aged open cluster M35. To do so, we have
collected a sample of 165 candidate members observed with the WIYN/Hydra
spectrograph. In addition, we have taken advantage of three previous
spectroscopic studies of Li in M35. As a result, we have collected a final
sample of 396 stars which we have classified as members and non-members of the
cluster. We have measured iron abundances, Li equivalent widths, and Li
abundances for the 110 M35 members added to the existing sample by this study.
Finally, rotation periods for cluster members have been obtained from the
literature or derived from Zwicky Transient Facility light curves. As a result,
we have confirmed that fast G and K rotators are Li-rich in comparison with
slow rotators of similar effective temperature. Furthermore, while we derived
subsolar metallicity for M35 from our spectra, the distribution of Li in this
cluster is similar to those observed for the Pleiades and M34, which have solar
metallicity and slightly different ages. In addition, we have shown that an
empirical relationship proposed to remove the contribution of the Fe I line at
670.75 nm to the blended feature at 670.78 nm overestimates the contribution of
this iron line for M35 members. We conclude that a 0.2-0.3 dex difference in
metallicity makes little difference in the Li distributions of open clusters
with ages between 100 and 250 Myr.
