Key to species of Schnella sect. Schnella with entire leaves 1. Plants with reniform fruits, up to 2 times longer than wide..............................................................................................................2. - Plants with oblong fruits, 3–4 times longer than wide......................................................................................................................3. 2. Fruits 5.0– 5.5 cm long, petals 8.0– 8.5 cm long, gynoecium 6–8 cm long; Atlantic rainforest in the eastern of Brazil............................................................................................................................................................................................................. S. maximiliani - Fruits 2–3 cm long, petals 4–6 cm long, gynoecium 2–4 cm long; Amazon forest of Brazil and French Guiana......... S. poiteauana 3. Plants with homomorphic elliptic petals 6.0–7.5 × 2.5–3.0 mm; eastern Brazil.............................................................. S. smilacina - Plants with heteromorphic petals, the three superior petals wide elliptic 4.5–5.0 × 2.5–3.0 mm, the two inferior elliptic 5–6 × 2.0– 2.5 mm; Colombia.................................................................................................................................................. S. madeleinae

Published as part of Casas-Restrepo, Luis Carlos, Fonseca-Cortés, Andrés, Queiroz, Luciano Paganucci De & Santos, Francisco De Assis Ribeiro Dos, 2023, Schnella madeleinae (Leguminosae: Cercidoideae), a new species with entire leaves from the Magdalena River Valley of Colombia, pp. 253-262 in Phytotaxa 591 (4) on page 259, DOI: 10.11646/phytotaxa.591.4.2, http://zenodo.org/record/7835478