About Pellaea paradoxa (R.Br.) Hook.
Pellaea paradoxa (R.Br.) Hook. is a small, hardy fern. It is distributed in areas north of Sydney in eastern Australia, as well as on Lord Howe Island. It most often grows in or near rainforests, within rocky crevices, though it can occasionally be found in drier environments. Its mature fronds are typically curved, measuring 4 to 9 cm in length and 1 to 4 cm in width. Fronds have a leathery texture and are dull green in color, while juvenile fronds may be heart-shaped. The stalks of this fern are roughly 1 to 5 mm long. Sori form a 2 to 3 mm wide band along the edge of the underside of the fronds. This species first appeared in scientific literature in 1810 under the name Adiantum paradoxum, published in Robert Brown’s Prodromus Florae Novae Hollandiae. In 2011, Christenhusz and colleagues placed the genus Pellaea in the subfamily Cheilanthoideae of the family Pteridaceae.
