Attached is a photo of a clipping that I took from a shrubby plant growing in a pot here in San Miguel de Allende, Mexico. I took some cuttings from the stems which had grown to a height of 3 to 4 feet. The leaves are singularly spaced at about 4 to 6 " intervals. The stems secrete a white liquid when cut. They almost look like cane begonia stems. The photos show the flowers that top each long stem.