Calycobolus sericeus from Kunth, Nova Genera et Species Plantarum 3: plate 214. 1819.
Description:
Dufourea sericea Kunth in Humboldt, Bonpland & Kunth, Nova Genera et Species Plantarum 3: plate 214. 1819. This reproduction shows a rare colored version of the plate; most copies of this multi-volume work have black and white plates. The correct scientific name is now Calycobolus sericeus.