The Collaborative International Dictionary of English v.0.48:

avens \av"ens\ ([a^]v"[e^]nz), n.; pl. avens. [OF. avence.]
   (Bot.)
   A plant of the genus Geum, of the rose family, esp. Geum
   urbanum, or herb bennet. They may bear red, yellow, or white
   flowers.
   [1913 Webster +PJC]

The Collaborative International Dictionary of English v.0.48:

Bennet \Ben"net\, n. [F. beno[^i]te, fr. L. benedicta, fem. of
   benedictus, p. p., blessed. See Benedict, a.] (Bot.)
   The common yellow-flowered avens of Europe (Geum urbanum);
   herb bennet. The name is sometimes given to other plants, as
   the hemlock, valerian, etc.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

cloveroot \cloveroot\ n.
   a hairy Eurasian plant (Geum urbanum) with small yellow
   flowers and an astringent root formerly used medicinally.

   Syn: herb bennet, wood avens, Geum urbanum.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Geum urbanum
    n 1: hairy Eurasian plant with small yellow flowers and an
         astringent root formerly used medicinally [syn: herb
         bennet, cloveroot, clover-root, wood avens, Geum
         urbanum]