2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/71903We give a one parameter family of exceptional planar 5-webs. Each web is formed by four pencils of lines and by a foliation defined by the level curves of a function sn_k(x)sn_k(y) where sn_k denotes a Jacobi's elliptic function.Differential Geometry53A60text