A plant genus of the family MAGNOLIACEAE. The germacranolide sesquiterpene lactones costunolide, parthenolide, and costunolide diepoxide have been isolated from the leaves. Bark contains honokiol and magnolol. Parts are an ingredient of Banxia Houpo Tang.

Synonyms: officinalis, Magnolia, Bay, Sweet, Magnolia grandifloras, virginianas, Magnolia, Magnolia virginianas, txid85864, Magnolia grandiflora, Magnolia virginiana, Magnolia, Magnolias, Magnolia officinali, Sweet Bay, txid3402, grandifloras, Magnolia, Magnolia officinalis, txid3412, txid3406