Acta botánica mexicana
versión On-line ISSN 2448-7589versión impresa ISSN 0187-7151
Mimulus minimus is described and illustrated as a new species based on plants collected in the northeastern mountains of Michoacan state, Mexico. It grows in wet sites in the Pinus-Quercus-Cupressus forest. The new species is included in the section Simiolus Greene (subgenus Synplacus Grant). Its similarities and differences with morphologically more closely related species such as Mimulus calciphilus Gentry, M. depressus Phil., M. glabratus Kunth, M. minutiflorus Vickery, M. wiensii Vickery and M. yecorensis Vickeri and M. guttatus DC. are discussed.
Palabras llave : Mimulus; Phrymaceae; Queréndaro river; subgénero Synplacus.