Porocystis demerarae Sandwith in Kew Bull. 1955: 374. 1955 Porocystis demerarae Sandwith in Kew Bull. 1955: 374. 1955Holotype: Guyana. Bartica, Fanshawe FD 6872Taxon for this namePorocystis demerarae Sandwith in Kew Bull. 1955: 374. 1955