The Collaborative International Dictionary
Heterocephalous
Heterocephalous \Het`er*o*ceph"a*lous\, a. [Hetero- + Gr.? head.] (Bot.) Bearing two kinds of heads or capitula; -- said of certain composite plants.
Wiktionary
heterocephalous
a. (context botany English) Bearing two kinds of head or capitula; said of certain composite plants.