Rosemary, aka Rosmarinus Officinalis, is an aromatic, woody perennial bearing blue flowers and needlelike leaves. Native to the Mediterranean and naturalized worldwide, rosemary leaf is most recognized as a culinary spice. Rosmarinus officinalis was known historically for its healthful uses and folklore, especially as a memory aid. Dried rosemary leaves can be macerated as rosemary extract, infused into oils and vinegars, and incorporated into herbal tea blends.