an inflorescence in which the flowers are arranged in a seeming whorl, consisting in fact of a pair of opposite axillary, usually sessile, cymes, as in many mints.
ver·ti·cil·las·ter (vûr'tĭ-sə-lās'tər) n. A cymose inflorescence resembling a whorl but actually arising in the axils of opposite bracts, as in most mints.
[New Latin verticillastēr : Latin verticillus, whorl; see verticil + Latin astēr, star; see aster.] ver'ti·cil·las'trate' (-trāt') adj.