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
Carya glabra hickory is an important shade tree in wooded suburban areas over most of the range but is seldom planted as an ornamental tree because of its size and difficulty of transplanting, although it has spectacular orangey-red fall colors. "Carya glabra" var. "megacarpa" (Sarg.) Sarg., coast pignut hickory, was once recognized as a distinct variety but is now considered to be a synonym of "C. glabra" (Mill.) Sweet. "C. leiodermis" Sarg., swamp hickory, has also been added as a synonym of "C. glabra" (11). "Carya glabra" (Mill.) Sweet var. "glabra" distinguishes the (typical) pignut hickory from red hickory ("C. glabra" var.