Dens canis is a gorgeous pale pink flower on attractive greeny brown mottled foliage. Erythronium is a genus of 20–30 species of hardy spring-flowering perennial plants with long, tooth-like bulbs. It is native to central and southern Europe from Portugal to Ukraine. Erythronium are excellent to grow in shady or woodland areas and need a very good well drained soil planted approx. 3 inches deep.