The leaves of L. caatingensis M. were collected in the municipality
of Simões, in the geographic coordinates of latitude 07◦35S
and longitude 040◦40W, in the southeast part of the State of Piaui.
Then, a representative sample of the species was deposited in the
Herbarium of the Federal University of Piaui, under number 27.183
and identified by Professor Jorge Yoshio Tamashiro (IQ-UNICAMP).