from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A circular arrangement, as of flowers, leaves, or hairs, growing about a central point; a whorl.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A whorl, a group of similar parts such as leaves radiating from a shared axis
from the GNU version of the Collaborative International Dictionary of English
- n. A circle either of leaves or flowers about a stem at the same node; a whorl.
from The Century Dictionary and Cyclopedia
- n. In botany, a whorl: applied to organs, as leaves or tlowers, that are disposed in a circle or ring around an axis.
- n. In zoology, a whorl, or circular set of parts radiating from an axis: as, a verticil of hairs, tentacles, or processes.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a whorl of leaves growing around a stem
In one instance the pseudo leaf divided, and from the division proceeded a little axis, bearing at its summit a verticil of pseudo leaves.
The carpels of the latter are wholly coalescent as in a pear, while those of the upper verticil are only partially coherent or sometimes quite distinct.
= -- A diminished number of leaves in a whorl occasionally takes place; thus, in some of the _Stellatæ_, and frequently in _Paris quadrifolia_, the number of leaves in the verticil is reduced.
All intermediate stages of this malformation may be found from cases where there is a simple fusion of two flowers with a second verticil of carpels within the outer, up to such cases as those which have been just mentioned.
In the normal stem of _Galium Mollugo_ the branches are opposite in each verticil and crossed in the two successive ones.
Kirschleger,  and in the accompanying diagram (fig. 195), from Cramer,  of a monstrous flower of _Orchis mascula_, there is one perfect stamen of the outer row and two lip-like stamens of the same series, while the inner verticil comprises one perfect and two abortive stamens.
The torsion, then, in this _Galium_ caused the separation of the two opposite branches of the same verticil, and placed them one above another, and this being reproduced in all the whorls, all the branches come to be arranged on the same longitudinal line.
The _inflorescence_ is a pyramidal panicle 1-1/2 to 4 inches long, erect on a terete glabrous peduncle 1-1/2 to 6 inches long, the main rachis is slender, erect, striate, glabrous and has glandular streaks just above the insertion of the branches of the lowest verticil.
In the middle of the verticil is similar to basal leaves.
The Pasque flower has a few leaves and a single flower with verticil