This article aims at analysing the indigenous presence, since loanword(s) from indigenous American languages, in the first lexicographical repertoire published in Nicaragua by a Nicaraguan, the Diccionario de nicaraguanismos (1939) by H. A. Castellón. In addition, not only are the words classified according to the Amerindian language of origin, but they are also distributed by lexical fields with the aim of observing in which lexical field indigenism predominates. Finally, due to its productivity, the focus is placed on the lexical field of flora, and the mechanisms used by the author to define the lemma are distinguished. In this sense, the work outlined is intended as a contribution to the study of Nicaraguan lexicography and lexicology, which has been largely neglected in previous research.

El objetivo principal de la presente investigación es analizar las fórmulas de tratamiento incorporadas en las cinco epístolas que Mariano Barreto dirige a Casanova, Paniagua Prado y Guzmán, y comparar así los resultados obtenidos (cuantitativos y cualitativos) con las cartas ya analizadas entre el nicaragüense y Cuervo. Con ello, se pretende realizar una aproximación al discurso epistolar de Barreto y al estudio histórico y pragmalingüístico del español de Nicaragua en el siglo XIX.