Costus spicatus (Jacq.) Sw. Costus spicatus (Jacq.) Sw., Prodr. Veg. Ind. Occ.: 11. 1788 sec. Espejo-Serna & López-Ferrari 2008=Alpinia spicata Jacq., Select. Stirp. Amer. Hist.: 1–2, t. 1. 1763 syn. sec. The Plant List 2013