var. MAGUIREI G. S. Bunting,

Phytologia 64: 466. 1988.

— TYPE: VENEZUELA. Bolivar, alto rio Cuyuni, rio Uiri-Yuk, El Foco, 30 Aug. 1962, Maguire, Steyermark & Maguire 53515 (holotype: NY!).

Heteropsis flexuosa var. maguirei differs from the typical variety in its longer petioles (1.5–2 cm long) usually with undulate margins towards the apex and broader leaf blades (10–13 cm wide). The longer petiole is distinctive and according to Bunting (1988) has been observed up to 4 cm long in specimens from the Território Federal do Amazonas in Venezuela. Further collections of this variety are needed.