bog asphodel noun2 •A yellow-flowered perennial, of species Narthecium ossifragum, found in wet open areas of western Europe, and bearing orange fruits formerly used as a food coloring.As he climbed up through the golden gorse he would look for orchids amongst the commoner cotton grass, bog asphodel and butterwort[.] — 1977 •Related species found elsewhere, such as Narthecium americanum and Narthecium californicum formsbog asphodels