“…The rural exodus and migratory flows have swelled the population of Cayenne city considerably over recent decades (Jolivet, 1982;Piantoni, 2011). In 2005, 30% of the total population of French Guiana was of immigrant origin 5 (Hurpeau, 2012), often living in precarious conditions in underprivileged neighbourhoods that sprang up out of nowhere (Auburtin, 2007(Auburtin, , 2006Gardel, 2001;Gorgeon, 1985;Romanovski & Piantoni, 2009). It is primarily to meet their primary care needs that urban populations collect certain medicinal plants from their surroundings, partially offsetting the difficulties they have in accessing conventional medicine (Carde, 2006;Jolivet, 1982;Valmy et al, 2015).…”