Ficus microcarpa
Ficus microcarpa as bonsai
. Sold by the thousands daily, the typical ficus retusa / micropcarpa is not per se a good plant for bonsai. However, when working these species, some excellent plants can be grown.
Single-smooth
Tree identification tool by Growing Bonsai
tree species > broadleaf > alternate > singular smooth
You have broadleaf species with leaves alternate on different positions on the branch. Each leaf consists of one connected surface. The leaf edge is smooth