Adenium Thai Socotranum Petch Ban Na (PBN). Characteristic of PBN plants, has a white stem with a combination of brown (silver) and shiny. Among all types of Thai Socotranum, this PBN has a lighter stem color. Including arabicum has a single branching but has a lot of twigs. The growth of the branches is very irregular, generally the PBN branches are curved towards the outside at an angle of about 45 degrees, but if formed will be a very beautiful PBN plant.