This form of C. laevis is believed to be the form that was described in 1901 as Costus splendens but later placed into synonymy with C. laevis. I saw the same form the year before in Guatemala. It is a huge plant, sometimes growing to 4-5 meters tall with large leaves. Here at Omega, the plant was 3-4 meters tall. Some plants had thick hairs on both sides of the leaves and some were totally glabrous. The ligules were only 8 mm long - much shorter than the typical Costus laevis but the petioles were 14 mm long. The leaves were very large measuring 55 cm long by 18 cm wide. A mature inflorescence was nearly 20 cm long, all green in the exposed part with a darker green nectar callus. Bracteole was 30 mm long, calyx 10 mm and deeply lobed with acute triangular lobes. The flower had yellow corolla lobes and open labellum with dark red blotches and stripes.