1766 Apr. 169/1 The mitre shap'd aloe.
1856 A. Gray (ed. 2) 174 Pod [of Mitreola] projecting beyond the calyx, strongly 2-horned or mitre-shaped.
1950 25 299 The center forms the body of an actinula larva, which is at first mitre-shaped, with two long stiff tentacles.