A printed version of the entire human genome would fill 220 large books. To do the same for a small, seemingly unremarkable fern found on a few Pacific islands would require nearly 11,000 books. 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 -- ...
Unfortunately you've used all of your gifts this month. Your counter will reset on the first day of next month. To download a PDF of Issue 39, “A Comparative Study ...