In the depths of the temperate forests of Chile and Argentina lives a biological marvel that baffles modern botany: Boquila trifoliolata. Although defensive mimicry is a widely documented phenomenon in the animal kingdom, this climbing vine is the only known plant organism with flexible and polymorphic mimetic ability, transforming the appearance of its foliage to camouflage with its immediate surroundings.
What is astonishing about the species lies in its versatility. If a single branch of Boquila climbs through three trees belonging to completely different botanical families, it will alter its leaves along each stretch to mimic its local host. The vine can increase its size ten times, vary the shade of green, curve its edges, adopt serrated margins, and even recreate specific vein patterns. This camouflage drastically reduces attacks by beetles and other foliar herbivores without needing to physically touch the supporting tree.
The enigma deepened with recent research published in Plant Signaling & Behavior, where specimens of Boquila managed to replicate the silhouette of synthetic plastic leaves suspended above them. By ruling out that the transformation relies solely on volatile chemical signals or genetic exchange between living tissues, the finding revived a bold theory proposed in 1905 by botanist Gottlieb Haberlandt: plant ocelli. Under this principle, the convex epidermal cells of leaves would function as primitive micro-lenses capable of focusing light and perceiving rudimentary spatial images of nearby objects.
Source: Plant Signaling & Behavior (White & Yamashita, 2021) / Current Biology (Gianoli & Carrasco-Urra, 2014)
