Black snake root (Actea (formerly Cimicifuga) simplex) is a great shade-loving, fall flowering plant. The bright white bottle brush inflorescences standing up 3-4' tall are quite striking in shady borders that don't have much else going on this time of year. Another member of the buttercup family, you don't have to worry about them getting nibbled on. The showiness of the flowers is primarily the function of the stamen filaments with a little bit of help from some petal like bracts. The flowers are very fragrant in a sweetish, musky, pheromone sort of fashion attracting quite an array of insects so no idea which are effective pollinators. Many new varieties exist with bronze to purple vegetation of much dissected leaves. These are terrific plants for shady border areas.