Vexillar

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Vexillar \Vex"il*lar\, Vexillary \Vex"il*la*ry\, [Cf. F.
     vexillaire, L. vexillarius a standard bearer.]
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     1. Of or pertaining to an ensign or standard.
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     2. (Bot.) Of or pertaining to the vexillum, or upper petal of
        papilionaceous flowers.
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     {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.
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