killarney fern: large stout fern of extreme western Europe
fern: any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores
kudzu: fast-growing vine from eastern Asia having tuberous starchy roots and hairy trifoliate leaves and racemes of purple flowers followed by long hairy pods containing many seeds; grown for fodder and forage and root starch; widespread in the southern United States