This pretty trailing species stays on the small side (with 4-5″ leaves) and is easy to grow. It was introduced in 2009 and is from Thailand. It forms a small rosette and then sends out runners, which can get quite long.
There are a few forms of B.ningmingensis, and they all look drastically different. The dark form seems to be very hardy and fast growing, and it flowers all the time. Leaves are a velvety dark green, with newer growth being lighter green. It is a newer species from China that grows to about 10″. It will often grow very close to the substrate, especially at first, forming a little tented area on the substrate.