Pourouma essequiboensis Standl. in Lloydia 2: 175. 1939 Pourouma essequiboensis Standl. in Lloydia 2: 175. 1939Holotype: Guyana, Essequibo River, Onoro Creek, A.C. Smith 2731Taxon for this namePourouma essequiboensis Standl. in Lloydia 2: 175. 1939