Botany - Lemon Balm

Scientific name Melissa officinalis
Appearance Perennial plant with square stems, bright green wrinkled oval leaves, and small whitish to pink flowers grouped in the leaf axils
Smell Lemon-scented, fresh, sweet and slightly sugary
Color Light to medium green (foliage), white to pale pink (flowers)
Used parts Leaves, flowering tops, used fresh or dried
Origins Southern Europe, Western Asia, naturalized in many temperate regions
Toxicity level Weak (non-toxic at usual doses, to be avoided in case of hypothyroidism)