'Vexilary aestivation' definitions:

Definition of 'Vexilary aestivation'

From: GCIDE
  • Vexillar \Vex"il*lar\, Vexillary \Vex"il*la*ry\, [Cf. F. vexillaire, L. vexillarius a standard bearer.] [1913 Webster]
  • 1. Of or pertaining to an ensign or standard. [1913 Webster]
  • 2. (Bot.) Of or pertaining to the vexillum, or upper petal of papilionaceous flowers. [1913 Webster]
  • Vexilary aestivation (Bot.), a mode of aestivation in which one large upper petal folds over, and covers, the other smaller petals, as in most papilionaceous plants. [1913 Webster]