Key to the species of Harpochilus

1. Inflorescence in terminal spikes, bracts yellow, showy; capsule smooth...................................................................... H. paraibanus

1´Inflorescence in axillary dichasia, bracts green, inconspicuous; capsule rugose ...............................................................................2

2. Leaves bullate, deltoid, sessile; flowers yellow with purple tinge ................................................................................ H. corrugatus

2´Leaves flat, lanceolate to obovate, petiolated; flowers green.......................................................................................... H. neesianus