The Collaborative International Dictionary of English v.0.48:

Centrospermae \Centrospermae\ n.
   used in former classification systems; approximately
   synonymous with order Caryophyllales.

   Syn: group Centrospermae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Centrospermae
    n 1: used in former classification systems; approximately
         synonymous with order Caryophyllales [syn: Centrospermae,
         group Centrospermae]