1) Order casuarinales 2) Plant order 
the beefwood order of dicotyledonous flowering plants comprising the family Casuarinaceae, with two genera (Casuarina, 30 species; Gymnostoma, 20 ... [1 related articles]
[n] - order of chiefly Australian trees and shrubs comprising the casuarinas
order Casuarinales noun order of chiefly Australian trees and shrubs comprising the casuarinas; 1 family: Casuarinaceae