The Collaborative International Dictionary of English v.0.48:

Pance \Pance\, n. (Bot.)
   The pansy. [Also paunce.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Paunce \Paunce\, n. [See Pansy.] (Bot.)
   The pansy. "The pretty paunce." --Spenser.
   [1913 Webster]