Costus pseudospiralis Maas & H.Maas A plant in habitat near Xapurí, Acre, Brazil with Martin Acosta B inflorescences emerging from the same rhizome C close-up of inflorescence with flowers showing their abaxial orientation D inflorescence with scale, emerging flower showing abaxial orientation E abaxial leaf surface showing indument. Photos A–E 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.