Pamela, A stamen appendage would be an "extra" structure on a stamen, which normally consists of only the filament and the anther. They may be simple or elaborate, colored (or not), textured (or not), etc. The evolutionary origin of these structures varies (fusion with staminodes, outgrowth of filament, fusion with tepals, etc.) so that in one group of plants the appendage may be something very different in its anatomy and function than in another group. Different terminology is used as well depending on the group and on origin and degree of fusion, e.g., cup or paraperigone in Hymenocallis and Narcissus. Snijman (1994) in treating the Hessea group notes some Hessea species have filaments with an "adaxial hook" and this would be a type of appendage. Dylan Hannon *"The greatest service which can be rendered any country is to add an useful plant to its culture..." --**Thomas Jefferson*