Costus convexus Maas & D.Skinner A plant in habitat with Eugenio Valderrama (left) and Chelsea Specht (right) B inflorescence C inflorescence with scale D upper leaves wrapping around and hiding the inflorescence E close-up of inflorescence F bract (left) and flower (right) detail. Photo in A taken in the wild prior to pressing Maas 10707, Putumayo, Colombia B, C plant observed in Putumayo, Colombia D–F plant observed in Zamora-Chinchipe, Ecuador. Photo A by Paul Maas B–F by Dave Skinner.

  Part of: Maas PJM, Maas-van de Kamer H, André T, Skinner D, Valderrama E, Specht CD (2023) Eighteen new species of Neotropical Costaceae (Zingiberales). PhytoKeys 222: 75-127.