I am looking for information on Impatiens mexicana, particularly recent observations or color pictures.
Species was published by Rydberg in 1910. It is regarded as endemic for Veracruz state; other sources give distribution both in Veracruz and in Oaxaca states.
I found following papers dealing at least partially with this taxon:
Sosa V., Vovides A.P., Castillo-Campos G. 1998. Monitoring endemic plant extinction in Veracruz, Mexico. Biodiversity and Conservation 7,11: 1521-1527.
Soto M.E. 1999. Balsaminaceae. Bioclimatologia de Flora de Veracruz 13: 30-50. Instituto de Ecologia, A.C. Xalapa, Veracruz, Mexico.
Barringer K. 1991. Balsaminaceae. Flora de Veracruz 64: 1–8. Instituto Nacional de Investigaciones sobre Recursos Bióticos, Xalapa.
Martinez y Perez J.L., Chazaro Basanez M. de J. 1991. Notas sobre el genero Impatiens (Balsaminaceae) en el centro de Veracruz, Mexico. Revista Biotam 3,2: ????.
Best regards Wojciech Adamowski