VERTICILLATE

verticillate, verticillated, whorled

(adjective) forming one or more whorls (especially a whorl of leaves around a stem)

Source: WordNet® 3.1

Etymology

Adjective

verticillate (comparative more verticillate, superlative most verticillate)

(botany) Forming or having whorls

Source: Wiktionary

Ver*tic"il*late, Ver*tic"il*la`ted, a. Etym: [See Verticil.] (Bot. & Zoöl.)

Definition: Arranged in a transverse whorl or whorls like the rays of a wheel; as, verticillate leaves of a plant; a verticillate shell.

Source: Webster’s Unabridged Dictionary 1913 Edition