Verticil :: Verticil (n.) A circle either of leaves or flowers about a stem at the same node; a whorl.
Verticillaster :: Verticillaster (a.) A whorl of flowers apparently of one cluster, but composed of two opposite axillary cymes, as in mint. See Illust. of Whorl..
Verticillated :: Verticillated (a.) Arranged in a transverse whorl or whorls like the rays of a wheel; as, verticillate leaves of a plant; a verticillate shell..