Hoya cumingiana and Hoya densifolia are facing taxonomic confusion due to their almost similar foliar and reproductive structural characters. In this study, 10 leaf samples for each species were collected and subjected to leaf architectural analysis. The two Hoya species showed dissimilarities in terms of blade shape, apex shape and angle, secondary vein spacing, secondary vein angle, and tertiary vein fabric. Cluster and ordination analyses revealed that H. cumingiana and H. densifolia are two separate species.