palo verde

(noun) densely branched spiny tree of southwestern United States having showy yellow flowers and blue-green bark; sometimes placed in genus Cercidium. Synonyms: palo verde, Parkinsonia florida, Cercidium floridum.

(noun) a thorny shrub of the genus Cercidium that grows in dry parts of the southwestern United States and adjacent Mexico; has smooth light green bark and racemes of yellow flowers and small leaves. Synonyms: paloverde.