Ficus pumila (syn. erecta)
These are cutting-grown from a plant Steve Hootman found growing in a garden in Philadelphia where it was defying conventional wisdom as to its hardiness. Being a savvy sort of fellow, he snagged a few cuttings thinking this might prove to be very useful. We think so too although we have not yet trialed it out in our garden. So many plants, so little space. This does seem promising and if your are looking for a small-leafed evergreen creeper that will cling to rocks or a wall, then this might be just the ticket.