[449] Sloanea acutiflora Uittien (Fig. 22A) Recueil Trav. Bot. Néerl. 22: 357 [“1925” publ. Jan. 1926] (Uittien 1926). NOTES. — Known only from the Guiana Shield. Pennington & Wise (2017: 77) placed S. acutiflora in synonymy under S. latifolia (Rich.) K.Schum., arguing that they have the same floral morphology, and that there are intermediate states throughout the range of the species (i.e. most of Amazonia) in fruit spine development and leaf shape; the typical form of S. latifolia has long petiole and large broad leaves with rounded bases while other “forms”, typified by S. acutiflora in the Guiana Shield and S. inermis Ducke in Southern and Western Amazonia, have smaller leaves with acute or cuneate base and short petioles. Our observations contradict these statements. In French Guiana, all specimens that correspond to the Pennington and Wise concept of S. latifolia can easily be separated into two very distinct groups. In the first group, which includes the original material (see Notes under S. ... : Published as part of Molino, Jean-François, Sabatier, Daniel, Grenand, Pierre, Engel, Julien, Frame, Dawn, Delprete, Piero G., Fleury, Marie, Odonne, Guillaume, Davy, Damien, Lucas, Eve J. & Martin, Claire A., 2022, An annotated checklist of the tree species of French Guiana, including vernacular nomenclature, pp. 345-903 in Adansonia (3) (3) 44 (26) on pages 449-450, DOI: 10.5252/adansonia2022v44a26, http://zenodo.org/record/7458777 ...