Uncaria guianensis
Uncaria guianensis, cat's claw, is a plant species in the genus Uncaria found in the Amazon biome. Other names for the plant include uña de gato, Paraguayo and vincaria.
U. guianensis contains many phytochemicals and proanthocyanidin B1 and proanthocyanidin B2, B type proanthocyanidins, in the root.