Bot. Pl. juga. [L. jugum yoke.] a. A pair of leaflets in a pinnate leaf. b. Each of the ridges on the carpels of Umbelliferæ.
1857. Henfrey, Elem. Bot., 59. The pairs of leaflets [in pinnate leaves] are sometimes called juga, and if only one pair exists, the leaf is unijugate.
1880. Gray, Struct. Bot. (ed. 6), 417/2. The ridges on the fruit of Umbelliferæ are termed juga.
