Goeppertia insignis (syn. Calathea lancifolia), the rattlesnake plant, is a species of flowering plant in the family Marantaceae, native to the state of Rio de Janeiro in Brazil.
It is an evergreen perennial, growing to 60–75 cm (24–30 in), with slender pale green leaves to 45 cm (18 in), strongly marked above with dark, purple blotches in below.
Un peu de verdure 