Protea plant family. (Courtesy Bill Bishoff) Silver tree (Leucadendron argentum). This small tree is dioecious: bearing the male and female flowers on separate plants. The silver tree flowers in ...

(Lygaeidae), and Oxycarenus maculatus (Protea seed bug), which are found ... and agricultural resources from invasive pests and plants, and from animal and plant diseases that could cripple ...