Loganiaceae - a dicotyledonous family of plants of order GentianalesGentianales, order Gentianales - an order of dicotyledonous plants having gamopetalous flowers; Gentianaceae; Apocynaceae; Asclepiadaceae; Loganiaceae; Oleaceae; Salvadoraceae genus Logania, Logania - type genus of the Loganiaceae; Australian and New Zealand shrubs sometimes cultivated for their flowers |