from the GNU version of the Collaborative International Dictionary of English
- n. a family of plants with heads composed of many florets, including the aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia.
from The Century Dictionary and Cyclopedia
- Same as Compositœ.
- A family of dicotyledonous sympetalous plants, the aster family, usually included in the Compositæ, of which it constitutes the Tubulifloræ, except that the Ambrosiaceæ are now segregated. Called Carduaceæ by some authors. See Compositæ, Tubulifloræ, Cichoriaceæ, Ligulifloræ, and Ambrosiaceæ.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. plants with heads composed of many florets: aster; daisy; dandelion; goldenrod; marigold; lettuces; ragweed; sunflower; thistle; zinnia
Sorry, no etymologies found.
Pretty vicious given where they come from: Pyrethrin is obtained from flowers of the asteraceae family (including daisies and chrysanthemums); pyrethroids are just synthetic pyrethrin.
This short-lived, clumping perennial member of the asteraceae family pushes up sturdy, branching stems filled with ovate to lance-shaped midgreen leaves to 6 inches in length.