Sometimes referred to as Begonia Vine, this is definitely NOT a begonia. It is in the grape family - a cousin to the massive succulent cyphostemma, etc. This is a tropical, vigorous, highly decorative vine. 5" pot size, shipped in pot. These do not do well shipped bare root!
This plant, just like other members of the family, forms small nodules underneath the leaves on occasion called "cystoliths." Many people scrape these off thinking they are eggs from a pest. Please don't! They are actually mineralized nodules that help disperse light to the darker areas of the leaves shaded by its other leaves- which is why they are usually seen on the undersides of the leaf.