Bot. [mod. L., f. L. verticill-us VERTICILLUS + -ASTER.] A form of inflorescence occurring in certain labiate plants (see quots.); a false whorl.
1832. Lindley, Introd. Bot., 112. If the cyme is reduced to a very few flowers, and those few become corymbose, such a disposition has been called a verticillaster by Hoffmansegg.
1861. Bentley, Man. Bot., 213. The Verticillaster.—This kind of cyme is seen in the White Dead-nettle.
1872. Oliver, Elem. Bot., II. 217. A coarse perennial herb, with … axillary cymes (forming verticillasters) of bilabiate white flowers.
