The ferns and their relatives first appear in the fossil record some 360 million years ago in the late Devonian period. They diversified into many of the modern fern families and species during the ...
Morphology of a fern -- How to use the keys in this field guide -- Keys for quick visual identification -- Life cycle of a fern -- The place of ferns and their allies in the plant kingdom -- ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback