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Samain, M.-S., Najarro, F.H. and Salas, E.M.M. 2014.

First record of the critically endangered Hydrangea steyermarkii Standl. (Hydrangeaceae) in Mexico, and description of a new widespread Hydrangea species of Mesoamerica

. Phytotaxa. 162, 4 (Mar. 2014), 181–197. DOI:https://doi.org/10.11646/phytotaxa.162.4.1.