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
Cyanea glabra hawaiiense", "Pipturus albidus", "Coprosma" spp., "Wikstroemia oahuensis", "Clermontia kakeana", "Psychotria" spp., "Sadleria" spp., "Cyrtandra spathulata", "Touchardia latifolia", "Freycinetia arborea", and "Cyanea elliptica". The remaining 12 plants are part of one population divided into two subpopulations. Threats to the species include exotic plants, feral pigs, and landslides. Cyanea glabra Cyanea glabra is a rare species of flowering plant in the bellflower family known by the common name smooth cyanea. It is endemic to Maui, where there are twelve plants remaining in the wild. It was federally listed as an endangered species of the United States with nine other Maui Nui endemics