BOTANY A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site fern A fern growing on the trunk of a Sabal palm in Florida. Sunlight passing through the fern's frond highlight the many spore-containing sori. Source: NBII image gallery A nonflowering plant of the class Filicineae having creeping or erect rhizomes and large conspicuous leaves. Spores are produced on the underside of the leaf within sporangia and germinate to form the gametophyte or sexual stage of the life cycle. Ferns are widely distributed throughout the world, but the majority grow in the tropics. Related category    • BOTANY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP