"Say that she frown; I'll say she looks as clear
As morning roses newly wash'd with dew."
Here is perfect consistency: the clearness of the "morning roses," arising from their being "wash'd with dew;" at all events, the quality being heightened by the circumstance. In a passage of the so-called "older" play, the duke is addressed by Kate as "fair, lovely lady," &c.
"As glorious as the morning wash'd with dew."—p. 203
As the morning does not derive its glory from the circumstance of its being "wash'd with dew," and as it is not a peculiarly apposite comparison, I conclude that here, too, as in other instances, the sound alone has caught the ear of the imitator.
In Act V. Sc. 2., Katharine says,—
"Then vail your stomachs; for it is no boot;
And place your hand below your husband's foot;
In token of which duty, if he please,
My hand is ready: may it do him ease."