The clear separation of Myrmecodia erinacea and alata is very difficult to impossible. Normally, M. erinacea has rather narrow leaves with wavy leaf margins and an uneven, quasi-embossed leaf surface, while M. alata has rather broad, smooth and unwavy leaves.
However, in some collections it is almost impossible to separate them . I have numerous locality forms in my collection and will offer some of them in the coming years.In this case, it is a clear M. erinacea with wavy and embossed leaves, but these are at the "broad" end of the variation spectrum. Unfortunately, the origin cannot be traced.