WordNet (r) 3.0 (2006):

ribbon fern
    n 1: fern of North Africa and Azores and Canary Islands [syn:
         ribbon fern, spider fern, Pteris serrulata]
    2: epiphytic fern found in lowland forests of tropical America
       [syn: grass fern, ribbon fern, Vittaria lineata]
    3: epiphytic fern with straplike usually twisted fronds of
       tropical Asia and Polynesia and America [syn: ribbon fern,
       Ophioglossum pendulum]