variegated Bougainvillea

This is a planted ornamental cultivar of Bougainvillea sp. with variegated leaves and white "bracts". (There are so many cultivars of Bougainvillea and I won't attempt to apply a specific one of them to this spotting). The flower of the plant is not composed of the larger, often bright colorful (in this case white) "petals" for which this plant is known and beloved (--these are really modified leaves known as bracts), but is actually small white tubular structures as can seen in these photos (1 & 2). This specimen also actually has at least two different varieties grafted on to it (at least one of which is visible in the upper right of the plant in the last photo) but these are not in "bloom" and have never thrived.