Monographs Details: Retiniphyllum laxiflorum var. longilobum Steyerm.
Authority: Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.
Family:Rubiaceae
Description:Latin Diagnosis - A var. laxiflorum. differt lobis corollae 17-20 mm longis tubum corollae aequantibus vel brevioribus.