phyllome prophyll PO:0009042 A phyllome that is the first organ or one of the first two organs formed at the base of an axillary shoot, often smaller and/or in a distinctively different position from leaves formed subsequently. prophylls (exact, plural) prophylla (exact, plural) profilo (Spanish, exact) prophyllum (exact) 前葉、前出葉 (Japanese, exact) A prophyll is not classified as a vascular leaf, because it may not have a fully developed vascular system. PO_GIT:273 plant_anatomy