Etlingera elatior

Growing in the back garden once upon a time. It has many, many names - Torch Ginger, Ginger Flower, Red Ginger Lily, Torch Lily, Wild Ginger, Combrang, Philippine Wax Flower, Xiang Bao Jiaing, Indonesian Tall Ginger, Boca de Dragón, Rose de Porcelaine, Porcelain Rose.

Here we call it Bunga Kantan.