costus spectabilis

Costus spectabilis, commonly known as the yellow trumpet, is an African, gregarious species of herb; low and perennial, it is found from Sierra Leone to Sudan to as far south as Angola and Zimbabwe.

It produces four large (12 x 12 cm), fleshy leaves which lie flat on the ground and form a basal rosette. They are glabrous above and pubescent below, especially along the midrib. The leaf margin is entire, often with an edging of purple-pink. The inflorescence is terminal, growing from the center of ...