a. Bot. [Cf. prec. and -AL.] Consisting of plants with umbellate flowers.
1836. Lindley, Nat. Syst. Bot. (ed. 2), 21. A plant of the Umbellal alliance. Ibid. (1846), Veg. Kingd., 773. Umbellal Exogens, with didymous fruit, and a double epigynous disk.
