Émile Zola said this quote
“ The shrub that half concealed her was a malignant plant, a Madagascan tanghin tree with wide, box-like leaves with whitish stems, whose smallest veins distilled a venomous fluid. At a moment when Louise and Maxime laughed more loudly in the reflected yellow light of the sunset in the little boudoir, Renée, her mind wandering, her mouth dry and parched, took between her lips a sprig of the tanghin tree that was level with her mouth, and sank her teeth into one of its bitter leaves. ”