Botanical atlas

Snakeroot (West Indian Snakeroot)

Rauvolfia canescens

Across the Caribbean and parts of Central and South America, root diggers and folk healers have long known Rauvolfia canescens as a plant of serious, almost solemn reputation, one reached for in cases of fever, snakebite lore, and troubled nerves. Its cousin, Rauvolfia serpentina, became famous when Western science isolated reserpine from its roots in the 1950s, and for a time it reshaped how the world treated high blood pressure and agitation. Rauvolfia canescens carries a closely related chemistry, which is exactly why traditional healers treated it with caution and ceremony rather than everyday familiarity. It is a plant that earned its folk name, snakeroot, through respect as much as remedy.

Safety.

Rauvolfia canescens is a member of the same alkaloid-rich genus as Rauvolfia serpentina, the plant that gave rise to the pharmaceutical drug reserpine. Its roots and bark contain potent indole alkaloids, including reserpine-type and ajmaline-type compounds, that act directly on blood pressure and the central nervous system. Uncontrolled use has been linked to dangerously low blood pressure, severe depression and suicidal ideation, slowed heart rate, sedation, nasal congestion, and gastrointestinal upset, and it can interact seriously with antidepressants, antipsychotics, blood pressure medication, and other prescription drugs. It is not considered appropriate for home use, self-dosing, pregnancy, nursing, or use in children. Because of this real toxicity risk, no home preparation or dosage is given here. Anyone drawn to this plant for its history should look, sketch, and read rather than ingest it, and should speak with a qualified herbalist or physician before ever considering it, if at all.