Siparuna lozaniana
It can be distinguished from Colombian congeners such as "Siparuna calantha" and "Siparuna petiolaris" by the combination of leathery oblanceolate or obovate leaves and smooth rather than spiny fruits . 
<triplet> oblanceolate <subj> leaves <obj> facet of <triplet> obovate <subj> leaves <obj> facet of