Polypodium glycyrrhiza very often associated with Acer macrophyllum. The fern is mycorrhizal, meaning it can form root associations with the hyphae of fungi. The sweet flavor of the rhizome was once attributed to the glycoside glycyrrhizin. However, a study has shown that the flavor may actually be due to polypodoside, which is 600 times sweeter than 6% sucrose solution. Licorice fern is cultivated as an ornamental garden plant. The cultivar 'Longicaudatum' has gained the Royal Horticultural Society's Award of Garden Merit. The licorice fern is sometimes valued for its licorice-flavored rhizome. Occasionally it is chewed, and it can also be brewed into
Pontefract line Pontefract line The Pontefract line is one of the rail services in the West Yorkshire Metro area of northern England. The service is operated by Northern, and links Wakefield and Leeds with Goole via Pontefract. The Metro timetable for the line also includes services operated as the Dearne Valley line between York and Sheffield via Pontefract. The line, which passes through the former mining areas to the east of Wakefield and Castleford, has the greatest number of stations opened by the West Yorkshire Metro. MetroCards are available on the route as far as Knottingley: a limited service of trains continues