compositous

From composite +‎ -ous.

compositous (not comparable)

1. (botany) Belonging to the Compositae; composite.
   • 1859 November 24, Charles Darwin, “Laws of Variation”, in On the Origin of Species by Means of Natural Selection, […], London: John Murray, […], →OCLC, page 144:

     I know of no case better adapted to show the importance of the laws of correlation in modifying important structures, independently of utility and, therefore, of natural selection, than that of the difference between the outer and inner flowers in some Compositous and Umbelliferous plants.