XVI International Botanical Congess

Variation in egg mimicry, leaf shape, cyanogenic chemistry, and pollination syndromes are discussed. New examples of egg mimicry in Passiflora have been discovered. Variation in leaf shape is discussed in light of our further understanding of ecologic and genetic principles. Greenhouse and natural history observations of within-species or within-species-groups variation in these traits give insight into the genetic orgin, control, and selective advantage of many of the plant's characteristics.