ram's-head: orchid of northern North America having a brownish-green flower and red-and-white lip suggestive of a ram's head
fourth lateran council: the Lateran Council in 1215 was the most important council of the Middle Ages; issued a creed against Albigensianism, published reformatory decrees, promulgated the doctrine of transubstantiation, and clarified church doctrine on the Trinity and Incarnation