... profane, no flower figures so conspicuously as the rose. To the Romans it was most significant when placed over the door of a public or private banquet hall. Each who passed beneath it bound himself thereby not to disclose anything said or done within; hence the expression sub rosa, ... — Wild Flowers, An Aid to Knowledge of Our Wild Flowers and - Their Insect Visitors - - Title: Nature's Garden • Neltje Blanchan