Background:

Floristic inventories record the species observed in a particular region and serve as fundamental contributions to understanding biotic resources. Jalisco stands out as one of the Mexican states with significant floristic diversity. However, ongoing additions, documented through exploratory efforts, and periodic taxonomic revisions highlight the importance of maintaining an up-to-date inventory of vascular plants.

Questions:

What is the diversity, endemism and distribution of the vascular flora in Jalisco?

Studied species:

Tracheophytes.

Study site and dates:

Jalisco; September 2020 to February 2024.

Methods:

An updated list was compiled through a literature, review of herbarium specimens (IBUG) and electronic databases available online. Total richness was estimated for the state and for each municipality. Taxonomic diversity and species complementarity indexes between municipalities were estimated.

Results:

The vascular flora in Jalisco encompasses 242 families, 1,623 genera, and 7,110 species. Among these, there are 3,310 species endemics to Mexico, 412 species endemic to Jalisco, and 390 exotic species. The municipalities with the highest species diversity are Autlán de Navarro, Cuautitlán de García Barragán, and La Huerta.

Conclusions:

The vascular flora of Jalisco is the fourth richest in Mexico. The increasing numbers of diversity, endemism, and even introduced species emphasize the ongoing need to document the flora of Mexico.