Figure 3 from: Samain M-S, Granados Mendoza C, Martínez Salas EM (2021) On Hydrangea peruviana, an endangered species from Ecuador, and Hydrangea oerstedii, very common in Costa Rica and Panama, and seven threatened Central and South American Hydrangeas, which have been confounded with these. PhytoKeys 171: 91-153. https://doi.org/10.3897/phytokeys.171.56351

Figure 3 Hydrangea durifolia. Branch with distinct "vegetative" leaves, floral axes with leaves and inflorescence buds. Image of specimen E.P. Killip & A.C. Smith 18366 (GH).