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

Hydrangea goudotii A branch with leaves seen abaxially, old inflorescence axes and the vegetative portion of the flowering branch B inflorescence bud with cucullate inflorescence bracts and densely pubescent inflorescence axis C inflorescence of functionally male plant, with enlarged marginal flowers and a few flowers that still show stamens A field image of collection Granados Mendoza et al. 2012-105 B, C field images of collection Granados Mendoza et al. 2012-43.