Polypodium glycyrrhiza 'Longicaudatum'
Licorice Fern. This is the Award of Garden Merit form of the species which has a superior presentation in its fronds which are blessed with a long terminal pinnae. And really, who doesn't want a long terminal pinnae? The typical species is a familiar sight growing on the trunks of our native Bigleaf Maples here in western Washington but this form is rare.