A nod of appreciation to Roberta K. of Tucson, Arizona for sharing these night-time photographs with us. Roberta, a frequent commenter on BPotD, sent these along via email a few weeks ago. Thank you!
Like yesterday’s Cercis, Caesalpinia is a member of the legume family. It also belongs to the same subfamily — the Caesalpinioideae (occasionally recognized as its own family, the Caesalpiniaceae). Members of this group typically grow in tropical and subtropical areas, and Caesalpinia gilliesii is no exception. Its native range includes Argentina, Peru, Chile and Uruguay, though it is naturalized elsewhere (including dryland areas of the southern USA). This particular plant was grown from seed by Roberta.