Poison ivy has a compound leaf made up of 3 leaflets which can be 1 to 4 inches long. The middle leaflet is the only one with a long stalk. Courtesy Johnson County Extension Just the mention of the ...

University of Guam Research Associate Benjamin Deloso examines a bi-pinnately compound leaf of Guam's flame tree. The endangered Serianthes nelsonii tree makes a leaf that uses this same design.

The primary outcome of the work was to show that this type of leaf modifies many whole-leaf traits in response to prevailing light conditions. Most literature on this subject has not completely ...