Ulmus ismaelis

Ulmus ismaelis
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Rosales
Family: Ulmaceae
Genus: Ulmus
Species: U. ismaelis
Binomial name
Ulmus ismaelis
Todzia & Panero sp. nov.

Ulmus ismaelis Todzia & Panero is a small tree recently discovered in southern Mexico, endemic to riparian forest along the Mixteco River system in northeastern Oaxaca, where it grows among large boulders in the limestone canyons.

Contents

Description

Rarely growing to > 15 m in height, the tree has exfoliating orangish bark. The ovate leaves are coriaceoeus, < 9.6 cm in length by 4.6 cm broad, acute at the apex, pinnately veined, on short (2-5 mm) petioles; the colour ranges from dull-green to light-brown. The apetalous flowers are arranged as short racemes on leafless twigs, sparsely clustered on < 7 mm peduncles.

The samarae are < 22 mm by 13 mm, tapering at the base to a < 4 mm stalk, and are shed during June and July [1].

Pests and diseases

No information available.

Cultivation

The tree is not known to be in cultivation.

Etymology

Named for Mexican botanist and collector Dr Juan Ismael Calzada, who discovered the tree.

References

  1. ^ Todzia, C. A. & Panero, J. L. (1998). A new species of Ulmus (Ulmaceae) from southern Mexico and a synopsis of the species in Mexico. Brittonia: Vol 50, (3): 346.