... rhinitis, sinus headaches, and sinusitis. The flower buds open nasal obstructions by helping the body expel mucus ... alkaloids (magnoflorine, salicifoline, magnocurarine), and tannin. The unopened flower buds contain essential oils (anethole, camphene, cineol, estragole, eugenol, ... harvested from Magnolia officinalis, while the unopened flower buds are from Magnolia liliflora. The common name Magnolia ...