Eyes in the Chameleon Vine?

In a thought-provoking contribution, Baluska and Mancuso [1] resurrect the concept of plant ocelli, originally formulated over a century ago, and discuss examples of eye-like structures in cyanobacteria [2] and dinoflagellates [3] that allow these organisms to sense light direction and subsequently alter their movement. Furthermore, they put forward that two cases in higher plants suggest the occurrence of vision-like phenomena. First, the photoreceptor-mediated kin recognition in Arabidopsis thaliana, whereby plants growing with kin neighbors reorient their leaves in such a way that it decreases mutual shading (a response not observed with nonkin neighbors) [4].