The Probert Encyclopaedia of Nature

ULMACEAE

Ulmaceae is the elm order of trees and shrubs, natives chiefly of the northern regions. They have rough, alternate leaves, and greenish flowers in loose clusters. The family is divided into two sub-orders, Celtidae and Ulmeae. The elms are ,ostly very large trees with rough bark; the timber being long valued for its resistance to water.
Research Ulmaceae