| Noun | 1. | genus Leucadendron - large genus of evergreen trees and shrubs having silvery white leaves and solitary terminal flowers with conspicuous silvery bracts dicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination family Proteaceae, protea family, Proteaceae - large family of Australian and South African shrubs and trees with leathery leaves and clustered mostly tetramerous flowers; constitutes the order Proteales Leucadendron argenteum, silver tree - small South African tree with long silvery silky foliage |