There are two forms of cf. U577, this is the green one.  It is a trailing species from Thailand introduced in 2009, and is easy to grow, but prone to bronzing imperfections on the leaf.  The leaves stay under 5″ and are defined by a broad silver green stripe that radiates out.  Between this marking is are sections of dark green and maroon.

The plants available are well rooted and growing in 2″ pots.