This latex-bearing plant is grown as a potted plant by many. I have grown this for many years too because it requires little or no care...just watering. And a bit of broken stem roughly planted into soil will take root. This is the first time I have seen flowers on this plant.
This specimen was planted by my neighbour to beautify the side of the road running outside her boundary wall.
Wikipedia says: Earlier known asPedilanthus tithymaloides ; Euphorbia tithymaloides has a large number of household names used by gardeners and the public. Among them are buck-thorn, cimora misha, christmas candle, devil's backbone, fiddle flower, ipecacuahana, Jacob's ladder, Japanese poinsettia, Jew's slipper, Jewbush, milk-hedge, myrtle-leaved spurge, Padus-leaved clipper plant, red slipper spurge, redbird cactus, redbird flower, slipper flower, slipper plant, slipper spurge, timora misha, and zig-zag plant. In other parts of the world, it is known as gin-ryu (Japan); pokok lipan and penawar lipan (Indonesia); airi, baire, and agia (India); aperejo (Yoruba); sapatinho do diabo (Brazil); itamo real (Puerto Rico); pantoufle (France); and zapatilla del diablo (Mexico)