Skip to main content
Select Source:

enation theory

enation theory The theory that accounts for the origin of the fern leaf by suggesting that it arose from the development of simple outgrowths (enations). Any such theory has to account for the large, branching fronds of a fern with branching veins (a ‘megaphyll’) and also for the small leaves (‘microphylls’) with a single median vein.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"enation theory." A Dictionary of Earth Sciences. . Encyclopedia.com. 23 Nov. 2017 <http://www.encyclopedia.com>.

"enation theory." A Dictionary of Earth Sciences. . Encyclopedia.com. (November 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/enation-theory

"enation theory." A Dictionary of Earth Sciences. . Retrieved November 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/enation-theory

enation theory

enation theory The theory that accounts for the origin of the fern leaf by suggesting that it arose from the development of simple outgrowths (enations). Any such theory has to account for the large, branching fronds of a fern with branching veins (a ‘megaphyll’) and also for small leaves (‘microphylls’) with a single median vein.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"enation theory." A Dictionary of Ecology. . Encyclopedia.com. 23 Nov. 2017 <http://www.encyclopedia.com>.

"enation theory." A Dictionary of Ecology. . Encyclopedia.com. (November 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/enation-theory-0

"enation theory." A Dictionary of Ecology. . Retrieved November 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/enation-theory-0