Polypodium glycyrrhiza Polypodium glycyrrhiza Polypodium glycyrrhiza, commonly known as licorice fern, many-footed fern, and sweet root, is a summer deciduous fern native to western North America, primarily in a narrow strip in southern Alaska, southwestern Yukon Territory, western British Columbia, Washington, Oregon, and California, though two highly disjunct populations are known from Idaho and Arizona. It thrives in a humid climate, prevailing in areas with cool and moist summers and warm and wet winters. "P. glycyrrhiza" can often be found growing on the trunks and branches of winter deciduous trees, particularly bigleaf maple, but is also often found on rocks, logs, and
Yorkshire Subterranean Society 40th anniversary in 2004 at the Kings Croft Hotel, Pontefract. The YSS was formed by a group of enthusiasts in October 1964 initially calling themselves "The Undertakers Subterranean Society". After adverse publicity, they changed their name to the Yorkshire Subterranean Society in August 1965. Yorkshire Subterranean Society The Yorkshire Subterranean Society is a caving club based at Helwith Bridge near Horton in Ribblesdale in the Yorkshire Dales. The Yorkshire Subterranean Society is more commonly known as the YSS. The YSS organises regular Caving and Walking meets to the Yorkshire Dales twice a month and other UK Caving areas through the