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
Chelone glabra glabra" is a popular browse plant for deer. It is also a foodplant for the sawflies "Macrophya nigra" and "Tenthredo grandis" (Hymenoptera: Tenthredinidae), and a flea beetle in the genus Dibolia (Coleoptera: Chrysomelidae) has also been shown to feed on it. It has been used as a method of birth control by Abenaki people. 11. Allan D. Nelson; Wayne J. Elisens (1999). "Polyploid evolution and biogeography in Chelone (Scrophulariaceae): morphological and isozyme evidence". "American Journal of Botany". Botanical Society of America. 86(10): 1487–1501. doi:10.2307/2656929. JSTOR 2656929. PMID 10523288. Chelone glabra Chelone glabra (white turtlehead) is an herbaceous species of plant