| Noun | 1. | genus Bulnesia - palo santo rosid dicot genus - a genus of dicotyledonous plants bean-caper family, family Zygophyllaceae, Zygophyllaceae - small trees, shrubs, and herbs of warm arid and saline regions; often resinous; some poisonous: genera Zygophyllum, Tribulus, Guaiacum, Larrea Bulnesia sarmienti, palo santo - South American tree of dry interior regions of Argentina and Paraguay having resinous heartwood used for incense |