The Collaborative International Dictionary of English v.0.48:

Lobeliaceae \Lobeliaceae\ n.
   A natural family of plants not recognized in all
   classification systems; in some classifications lobeliaceous
   plants are included in family Campanulaceae.

   Syn: family Lobeliaceae, lobelia family.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Lobeliaceae
    n 1: not recognized in all classification systems; in some
         classifications lobeliaceous plants are included in family
         Campanulaceae [syn: Lobeliaceae, family Lobeliaceae,
         lobelia family]