Ca. Todzia et Jl. Panero, A NEW SPECIES OF ULMUS (ULMACEAE) FROM SOUTHERN MEXICO AND A SYNOPSISOF THE SPECIES IN MEXICO, Brittonia, 50(3), 1998, pp. 343-347
Botanical exploration in northeastern Oaxaca has revealed an undescrib
ed species of Ulmus. A description and illustration of Ulmus ismaelis
highlight its distinctive features. A dichotomous key summarizes morph
ological differences for all Ulmus species in Mexico.