The Collaborative International Dictionary of English v.0.48:

Mandragora \Man*drag"o*ra\, n. [L., mandragoras the mandrake.]
   (Bot.)
   A genus of plants; the mandrake. See Mandrake, 1.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Mandragora
    n 1: a genus of stemless herbs of the family Solanaceae [syn:
         Mandragora, genus Mandragora]