Sans Back to Ruscaceae?
Earlier in July 2013 I attended the CSSA Convention in Austin TX. Among the speakers was Len Newton (prof of microbiology at Kenyatta Univ. in Kenya. Len spoke on the 5 arboresscent Sans species; S. arborescens, S. powysii, S. bagamoyensis, S. ascendens, and S. powellii. See flicker link for photos. But during his talk he mentioned that in his revised article for the Illustrated Handbook of Succulent Plants - Monocots, he is moving the sans back to ruscaceae. Jut thought some you would like to be informed.
Here is a link that might be useful: Five Arborescent Sans species