ESTUDIO FLORÍSTICO DE LA PARTE CENTRAL DE LA BARRANCA NENETZINGO, MUNICIPIO DE IXTAPAN DE LA SAL, ESTADO DE MÉXICO

Abstract

A complete inventory of all plant species
that occur in Mexican territory does not
exist. There are still groups that require study and areas that remain unexplored, such as
the barranca Nenetzingo, Ixtapan de la Sal,
in the State of Mexico. This paper provides
data on the flora of the barranca, including
such features as biological form, reproductive phenology, and abundance. After
spending 21 months collecting, pressing and
drying, and identifying all species from the
study area, a list of species was prepared.
The flora was found to have 362 species
distributed in 89 families and 248 genera.
Seventeen species are documented for the
state for the first time. The leading families
are Asteraceae, Poaceae, and Fabaceae with
12.9, 10.6, and 5.2%, respectively, of the
total number of genera and 14.1, 9.4, and
6.4%, respectively, of the species. Grasses
and shrubs represent 82.6 % of all species
identified. Flowering and fruiting occur
during summer (67.6%) and fall (69.4%).
Many of the plants are abundant (47.8%),
followed by those that are frequent (29.3%)
and scarce (22.9%). Finally, it is noted that
the study area has a significant amount of
species diversity, but it is a disturbed place
requiring conservation action.