PLANTAS VASCULARES RARAS, AMENAZADAS, O EN PELIGRO DE EXTINCIÓN DEL ESTADO DE OAXACA, UN PANORAMA PRELIMINAR

Abstract

A list of 307 endangered vascular plants taxa,
with known distribution, vegetation and altitudinal ranges inside Oaxaca State is
presented.Orchidaceae followed by Cactaceae
and Zamiaceae were the families with the greatest number of endangered taxa. Cloud forest
was the vegetation type with most endangered
taxa. Most of the taxa were classified in “threatened” category, although several taxa are
“insufficiently known” and three probably
extinct species are even recorded.
Sierra Norte and Istmo regions had a great
amount of endangered taxa. But districts
poorly collected were evident. So it is necessary to promote basic floristic studies in poorly
known zones as in biologically important
communities as cloud forest, oak forest and
tropical deciduous forest.