Crinum submersum

C. submersum is an enigma.  Some consider it a hybrid, perhaps similar to C. x digweedii but with C. scabrum and C. erubescens as parents (instead of C. americanum).  However, Mr. Hannibal that this plant is found growing (apparently wild) in the Sierra del Mar Mountains near Rio del Janeiro in Brazil by Dean William Herbert (in 1824).