Bot. [f. L. ament-um + -AL.] Bearing catkins; epithet of one of Lindleys alliances of Gymnogens.
1847. Lindley, V. K. (ed. 2), 254. Amental Exogens. Ibid., 248. Natural Orders of Amentals.
1866. Balfour, in Treas. Bot., 140. The amental or catkin-bearing alliance of Lindley.