Online Encyclopedia

ACOTYLEDONES

Online Encyclopedia
Originally appearing in Volume V01, Page 153 of the 1911 Encyclopedia Britannica.
Spread the word: del.icio.us del.icio.us it!
ACOTYLEDONES, the name given by Antoine Laurent de Jussieu in 1789 to the lowest class in his Natural System of Botany, embracing flowerless plants, such as ferns, lycopods, horse-tails, mosses, liverworts, sea-weeds, lichens and fungi. The name is derived from the absence of a seed-leaf or cotyledon. Flowering plants bear a seed containing an embryo, with usually one or two cotyledons, or seed-leaves; while in flowerless plants there is no seed and therefore no true cotyledon. The term is synonymous with Cryptogams, by which it was replaced in later systems of classification.
End of Article: ACOTYLEDONES
[back]
URIEL ACOSTA (d. 1647)
[next]
ACOUSTICS (from the Gr. &eobav to hear)

Additional information and Comments

There are no comments yet for this article.
» Add information or comments to this article.
Please link directly to this article:
Highlight the code below, right click and select "copy." Paste it into a website, email, or other HTML document.