Yes, bougainvillea trained to a standard form. If you look closely, you can see the support in the middle of it.

thanks

Purple bougainvillea grow very well as standards they make nice thick trunks fairly quick.

That photo reminded me of the spectacular bougainvilleas at the Getty Museum in CA. The supports are made from what looks like rebar. If you look closely, you can spy some people sitting behind one in the center, to get an idea of how large they are.