Statut biogéographique : D'après G.L. Webster (Lundellia, 6(1):
33-34. 2003): "Subspecies
brasiliensis is the most widespread taxon in sect.
Nothoclema after
P. acuminatus, and is the main plant used in South America as a fish poison. Examination of specimens across the Amazon basin has shown that except for southern Ecuador and northern Peru, nearly 100% of the plants in the rest of the distribution produce no fruits and seeds. Apparently most populations of ssp.
brasiliensis represent sterile clones that have been cultivated by indigenous peoples in a semi-domesticated state." En Guyane française elle parait essentiellement cultivée comme poison de pêche mais la
majorité des étiquettes d'herbier sont confuses sur l'origine des
collectes... Potentiellement indigène???