Varronia bellonis, commonly known as the serpentine manjack, is a species of flowering plant that was first reported in Susúa Puerto Rico in 1992, where a small group of five individuals was found.

Due to habitat destruction, as of 1997, only 99 known plants remained in the wild, and the population of V. bellonis appeared to be in rapid decline.

The shrub is typically found either on sunny banks along dirt roads growing in thickets of vegetation or in open saddles between limestone hills.

The leaves of the shrub are alternate in pattern, oblong in shape, and 2–6 cm (0.79–2.4 in) in length, and roughly 2.5 to 3 times longer than wide.

This habitat destruction in combination with the requirement for adequate numbers of both male and female plants in a viable population are limiting factors for the species.

Special attention should be given to individual plants alongside roads and trails because roadside vegetation management (like brush cutting) could readily extinguish these populations.

Locations within and around the towns of Maricao as well as in Río Abajo, Susúa, and Ciales should provide suitable habitats for reintroduction.