- Guaiacum, genus Guaiacum - small genus of evergreen resinous trees or shrubs of warm and tropical America
--1 is a kind of rosid dicot genus
--1 is a member of Zygophyllaceae, family Zygophyllaceae, bean-caper family
--1 has members:lignum vitae, Guaiacum officinale; bastard lignum vitae, Guaiacum sanctum