Pyrrosia is a genus of about 100 fern species in the polypod family, Polypodiaceae. ==Species list== ... Found on http://en.wikipedia.org/wiki/Pyrrosia
(from the article `fern`) ...spores bilateral, golden; gametophyte cordate (heart-shaped), nongemmiferous (not producing gemmae, tiny clusters of cells that break off and form ... Found on http://www.britannica.com/eb/a-z/p/138