Valeriana Pyrenaica

from The Collaborative International Dictionary of English v.0.48

Setwall \Set"wall`\, n. [CF. {Cetewale}.] (Bot.)
   A plant formerly valued for its restorative qualities
   ({Valeriana officinalis}, or {Valeriana Pyrenaica}). [Obs.]
   [Written also {setwal}.] --Chaucer.
   [1913 Webster]