Ulmus ismaelis
Ulmus ismaelis Todzia & Panero

Ulmus ismaelis is a small tree species from the Ulmaceae family, first discovered in 1997 in southern Mexico by Ismael Calzada. It is native to the riparian forests along the Mixteco River system in northeastern Oaxaca, growing among large boulders in limestone canyons. The species has also been recorded in Honduras and El Salvador. It is notable for its occurrence in relatively dry environments with less than 50 cm of annual rainfall and at low altitudes between 450 and 750 meters.
Description
Ulmus ismaelis, described by Todzia & Panero in 1998, is a member of the Ulmaceae family. It is a small tree found in dry habitats, including riparian zones in limestone canyons. The species is distributed across southern Mexico, Honduras, and El Salvador. It grows at low altitudes (450–750 m) and is adapted to arid conditions with limited annual precipitation. The tree was first identified in the Mixteco River system in northeastern Oaxaca, where it is associated with rocky terrain and large boulders.
Distribution
El Salvador · Honduras · Mexico Southwest