Baracho, G. S., & Agra, M. D. F. (2016).

A new record of Sida glutinosa (Malvaceae), a rare species of the Caatinga in northeastern Brazil, with lectotypifications and taxonomic notes on the allied Sida glabra

. Phytotaxa, 282(1), 37–45. https://doi.org/10.11646/phytotaxa.282.1.4