Hetty is of course correct. Here it is called a Flamboyán, it blooms in late April through June and is a very common street tree. I will post some pictures this year when they are all in bloom, it's an amazing sight. The Lluvia de Oro, not sure of the name in English the translation is Rain of Gold, blooms at about the same time and many streets are lined with both of them. Fabulous!
I took some pics of my pitahaya vine this morning, also the great wall of Tita so you could get the whole picture.
Here's most of the wall with the pitahaya hitting the top of the bamboo section just before the living bamboo.
Right at the top of the wall it is developing 2 new runners. Isn't my neighbors royal palm gorgeous? It's the only thing in their yard and I will cry a river if they ever cut it down.
zoom of the 2 new runners, the orignal stalk is still sticking out in the air on the other side of the wall.
Here's where that vine begins, in a rather shallow batch of dirt over a large section of rock that the wall sits on.
These are several more vines that grew where the seeds fell down from the wall. They are next to the pond and get a lot of moisture from the water return. I may move some of them once I decide where would be a good place. They haven't grown much but they are healthy.