Costus mollissimus Maas & H.Maas A inflorescence B ligules and sheath, showing short ligule and indument C, D cultivated plant growing in Florida, propagated from living accession 1998GR01567 at Utrecht Botanical Garden. Photos A, B by Paul Maas C, D 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.