Fritillaria_biflora Fritillaria biflora (Chocolate Lily) is a species of fritillary endemic to California.Fritillaria biflora is called "Chocolate Lily" because its flowers resemble the color of chocolate. It should not be confused with Arthropodium strictum, which is also called "chocolate lily" but which resembles the scent of chocolate rather than the color. The Kamchatka Fritillary (F. camschatcensis) is sometimes also called "chocolate lily", namely in Alaska.