Tropical Zone Gardening: Must be a Euphorbia? - Thailand, 2 by cooked

cooked wrote:
Despite determined denials by the neighbours and my wife, this plant does flower. I am assuming that it is a Euphorbia mainly because of the milky sap that is abundant when I break a twig. Anyway, foto 1, close up of the non existent flower, foto 2, an offshoot that I dug out last week and foto 3, the plant in situ under a mango still showing its leaves which will soon also fall (no rain for three months). The flower doesn't look like a typical Euphorbia, does it? Apparently it spreads everywhere if not kept under check and the plant in a pot was cut down four months ago. I do like to know the names of things... please have a go!