The Collaborative International Dictionary of English v.0.48:

angrecum \angrecum\ n.
   1. any of various spectacular orchids of the genus
      Angraecum having 2-ranked dark green leathery leaves and
      usually nocturnally scented white or ivory flowers.
      [WordNet 1.5]

WordNet (r) 3.0 (2006):

angrecum
    n 1: any of various spectacular orchids of the genus Angraecum
         having dark green leathery leaves and usually nocturnally
         scented white or ivory flowers