Cinnamon.

Cinnamomum cassia Presl (Latin scientific name: Cinnamomum cassia Presl) is a medium-large tree of the Lauraceae family, with gray-brown bark. Leaves are alternate or nearly opposite, oblong to nearly lanceolate, leathery, with cartilaginous edges, involute, green, glossy, hairless, with thick petioles. Panicle axillary or subterminal. The flowers are white, with perianth lobes, filaments pubescent, flat, anthers oval-oblong, and ovary ovoid. Fruit oval.