Bird's Nest Fern is a common name applied to several related species of ferns in the genus Asplenium, of which the best-known species is Asplenium nidus; others include Asplenium australasicum and Asplenium serratum. Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of some twenty thousand species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ... Species Asplenium bulbiferum - mother fern Asplenium nidus - birds-nest fern Asplenium platyneuron - ebony spleenwort Asplenium rhizophyllum - walking fern Asplenium scolopendrium - harts-tongue fern Asplenium trichomanes - maidenhair spleenwort Full list of Asplenium species The genus Asplenium of ferns is one of only two genera in the family Aspleniaceae. ... Binomial name Asplenium nidus L. Asplenium nidus is a species of fern in the family Aspleniaceae, native to tropical southeastern Asia, northern Queensland in Australia, Hawaii, Polynesia, Christmas Island, India, and eastern Africa. ...
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A fern is a vascular plant that differs from the more primitive lycophytes in having true leaves (megaphylls) and from the more advanced seed plants (gymnosperms and angiosperms) in lacking seeds.
Ferns have traditionally been grouped in the class Filices, but some modern classifications assign them their own division in the plant kingdom, which may be known as Pterophyta or Filicophyta.
Ferns of the genus Azolla, which are very small, floating plants which do not look like ferns, and are called mosquito fern, are used as a biological fertilizer in the rice paddies of southeast Asia.